[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f2aks4lq13d57i":3,"$f2f5iahm9am60f":338,"$f1hm7cv6ejihnw":490},[4,21,32,41,54,63,73,82,94,105,114,123,131,141,151,160,170,180,190,200,209,218,230,239,247,256,264,271,280,288,296,304,311,320,330],{"id":5,"kind":6,"locale":7,"slug":8,"path":9,"title":10,"excerpt":11,"seoTitle":12,"seoDescription":13,"category":14,"coverImage":15,"district":16,"lat":16,"lon":16,"publishedAt":17,"updatedAt":18,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},100,"guia","en","window-grant-cascais","\u002Fwindow-grant-cascais","Grant to replace windows in Cascais: Green Fund (70% to 100%)","The Cascais Green Fund pays between 70% and 100% of windows, up to €3,000, depending on the IRS bracket. What the Regulation says and what is still unknown.","Window grant in Cascais: Green Fund rules | JanelaCerta.pt","Cascais Fundo Verde for families: class A windows with 100%, 90% or 70% co-funding, a €3,000 limit, who can apply and how.","apoios","\u002Fimg\u002Fgen\u002Fcasa-caiada-janela-azul.jpg",null,1792666800000,1792670983000,6,false,{"id":22,"kind":6,"locale":7,"slug":23,"path":24,"title":25,"excerpt":26,"seoTitle":27,"seoDescription":28,"category":14,"coverImage":15,"district":16,"lat":16,"lon":16,"publishedAt":29,"updatedAt":30,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},99,"energy-efficiency-loan-windows","\u002Fenergy-efficiency-loan-windows","Energy-efficiency loan (BPF): who can apply, and for windows","Portaria 442-A\u002F2025\u002F1 creates a loan, not a gift, with class A windows on the list. Who can apply, the certificate required and what is still unknown.","BPF energy-efficiency loan for windows: the rules | JanelaCerta.pt","Banco Português de Fomento loan for windows and energy efficiency: who can apply, IRS brackets, energy certificate and the 12 Dec 2026 deadline.",1792663200000,1792667974000,5,{"id":33,"kind":6,"locale":7,"slug":34,"path":35,"title":36,"excerpt":37,"seoTitle":38,"seoDescription":39,"category":14,"coverImage":40,"district":16,"lat":16,"lon":16,"publishedAt":29,"updatedAt":30,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},98,"vale-eficiencia-windows-voucher","\u002Fvale-eficiencia-windows-voucher","Vale Eficiência and windows: what happened and what to do in 2026","The Vale Eficiência has ended, but the Government announced a new model for about 28,000 families with no voucher. How it worked, the timeline and what to do in each case.","Vale Eficiência and windows in 2026: what happened | JanelaCerta.pt","Vale Eficiência for windows: how it worked, when it ended, the new model announced for 28,000 families with no voucher and what to do if you applied.","\u002Fimg\u002Fgen\u002Fsala-sol-inverno.jpg",{"id":42,"kind":6,"locale":7,"slug":43,"path":44,"title":45,"excerpt":46,"seoTitle":47,"seoDescription":48,"category":49,"coverImage":50,"district":16,"lat":16,"lon":16,"publishedAt":51,"updatedAt":52,"name":16,"heroThumb":16,"readingMinutes":53,"isHub":20},97,"independent-help-windows","\u002Findependent-help-windows","Independent help before buying windows: Espaço Energia, casA+ and SCE experts","Three ADENE-linked services that can help before you talk to salespeople: what each one offers, and what their pages do not say.","Independent help for replacing windows: Espaço Energia, casA+, SCE | JanelaCerta.pt","Where to get help before replacing windows in Portugal: Rede Espaço Energia, Portal casA+ and the SCE expert search. What each offers and what it does not say.","outro","\u002Fimg\u002Fhomem-mesa-sol.jpg",1792659600000,1792666817000,4,{"id":55,"kind":6,"locale":7,"slug":56,"path":57,"title":58,"excerpt":59,"seoTitle":60,"seoDescription":61,"category":62,"coverImage":40,"district":16,"lat":16,"lon":16,"publishedAt":51,"updatedAt":52,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},96,"window-solar-factor","\u002Fwindow-solar-factor","Window solar factor (g-value): what it is and what the Portaria asks","The solar factor measures how much sun comes through the glass. See what it is, the Portaria 138-I\u002F2021 limit by summer zone, the exemptions and what to ask the installer.","Window solar factor (g-value) and Portaria 138-I\u002F2021 | JanelaCerta.pt","Window solar factor: what the g-value is, the gtot,máx limit of Portaria 138-I\u002F2021 (V1, V2, V3), the exemptions and what to ask for in writing in the quote.","eficiencia",{"id":64,"kind":6,"locale":7,"slug":65,"path":66,"title":67,"excerpt":68,"seoTitle":69,"seoDescription":70,"category":49,"coverImage":71,"district":16,"lat":16,"lon":16,"publishedAt":51,"updatedAt":72,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},95,"window-maintenance","\u002Fwindow-maintenance","Window maintenance: a calendar of what to do and when","Hardware, seals, cleaning and drainage: what manufacturers ask for and how often. A simple calendar you can print.","Window maintenance: yearly calendar | JanelaCerta.pt","Window maintenance: what to lubricate, clean and unblock, and how often, according to manuals from profile and hardware makers.","\u002Fimg\u002Fpeitoril-pvc.jpg",1792632021000,{"id":74,"kind":6,"locale":7,"slug":75,"path":76,"title":77,"excerpt":78,"seoTitle":79,"seoDescription":80,"category":49,"coverImage":81,"district":16,"lat":16,"lon":16,"publishedAt":51,"updatedAt":72,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},94,"security-windows-rc-classes","\u002Fsecurity-windows-rc-classes","Security windows: what the RC classes mean (EN 1627)","A window can have a burglary-resistance class from RC 1 to RC 6. See what each one tests, what the German police recommend and what to ask for in the quote.","Security windows: RC 1 to RC 6 classes (EN 1627) | JanelaCerta.pt","Burglar-resistant windows in Portugal: what RC 2, RC 3 or RC 4 of EN 1627 means, what each class withstands and what to ask for in writing in the quote.","\u002Fimg\u002Fgen\u002Frua-peniche.jpg",{"id":83,"kind":6,"locale":7,"slug":84,"path":85,"title":86,"excerpt":87,"seoTitle":88,"seoDescription":89,"category":90,"coverImage":91,"district":16,"lat":16,"lon":16,"publishedAt":92,"updatedAt":52,"name":16,"heroThumb":16,"readingMinutes":93,"isHub":20},93,"how-to-check-a-company","\u002Fbuying-guide\u002Fhow-to-check-a-company","How to check a window company before you pay","Five checks before you pay the deposit: does the company exist, is it up to date, which papers to ask for and which red flags to look for.","How to check a window company before you pay | JanelaCerta.pt","How to check a window company in Portugal before you pay: what to verify, red flags, how much deposit is usual and what to do if something goes wrong.","instalacao","\u002Fimg\u002Fgen\u002Finstalador-mede.jpg",1792400400000,7,{"id":95,"kind":6,"locale":7,"slug":96,"path":97,"title":98,"excerpt":99,"seoTitle":100,"seoDescription":101,"category":49,"coverImage":102,"district":16,"lat":16,"lon":16,"publishedAt":92,"updatedAt":103,"name":16,"heroThumb":16,"readingMinutes":104,"isHub":20},92,"window-glossary","\u002Fglossary","Window glossary: Uw, Low-E, thermal break and other words on a quote","The words you will meet on a Portuguese window quote, in alphabetical order and in plain English, with a link to the guide that goes deeper.","Window glossary: Uw, Low-E, tilt-and-turn and more | JanelaCerta.pt","A plain-English window glossary for Portugal: Uw, Ug, Low-E, thermal break, oscilobatente, CLASSE+, vão and more than 45 words you meet on quotes.","\u002Fimg\u002Fgen\u002Fjanela-manha-vista.jpg",1792666515000,9,{"id":106,"kind":6,"locale":7,"slug":107,"path":108,"title":109,"excerpt":110,"seoTitle":111,"seoDescription":112,"category":14,"coverImage":40,"district":16,"lat":16,"lon":16,"publishedAt":92,"updatedAt":18,"name":16,"heroThumb":16,"readingMinutes":113,"isHub":20},91,"windows-grants-portugal","\u002Fwindows-grants-portugal","Grants to replace windows in 2026: what is open and whether you qualify","Is there State money to replace windows? Take the quiz, see the new Vale Eficiência model, the Banco Português de Fomento loan, the council programmes and VAT.","Grants to replace windows in Portugal 2026: do I qualify? | JanelaCerta.pt","Window grants in Portugal 2026: what is open, Vale Eficiência, the BPF loan, Cascais, 6% VAT. Take the quiz to see if you qualify. Checked 22 Oct 2026.",10,{"id":115,"kind":6,"locale":7,"slug":116,"path":117,"title":118,"excerpt":119,"seoTitle":120,"seoDescription":121,"category":62,"coverImage":102,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":103,"name":16,"heroThumb":16,"readingMinutes":93,"isHub":20},89,"double-glazing-low-e-argon","\u002Fdouble-glazing-low-e-argon","Double glazing, Low-E and argon: how to read the glass specification (4\u002F16\u002F4, Ug and Uw)","What 4\u002F16\u002F4 means, what the Low-E coating and argon do, why Ug is not Uw and how to compare the glass in two quotes.","Double glazing Low-E and argon: read 4\u002F16\u002F4, Ug and Uw | JanelaCerta.pt","Double glazing with Low-E and argon: what 4\u002F16\u002F4 means, the difference between Ug and Uw, the spacer and laminated glass, and how to compare two quotes.",1792227600000,{"id":124,"kind":6,"locale":7,"slug":125,"path":126,"title":127,"excerpt":128,"seoTitle":129,"seoDescription":130,"category":90,"coverImage":15,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":72,"name":16,"heroThumb":16,"readingMinutes":93,"isHub":20},88,"replacing-old-windows","\u002Freplacing-old-windows","Replacing old windows: when it pays off, signs and what to check first","Not every old window has to go. See the signs for repairing or replacing, what a new window does not fix, and what to confirm before you order.","Replacing old windows: when it pays off and what to check | JanelaCerta.pt","Replacing old windows in Portugal: signs to repair or replace, what a new window does not fix, keeping or removing the frame, condominium rules and a step plan.",{"id":132,"kind":6,"locale":7,"slug":133,"path":134,"title":135,"excerpt":136,"seoTitle":137,"seoDescription":138,"category":49,"coverImage":139,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":140,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},87,"sliding-windows","\u002Fsliding-windows","Sliding windows: types, insulation, seals and when to choose them","They save space, but they seal less well than a casement. See the sliding systems, how to care for the rail and what to ask for in the quote.","Sliding windows: types, insulation and seals | JanelaCerta.pt","Sliding windows in PVC and aluminium: types (lift-and-slide too), seals, the rail, glass weight on balcony doors and what the quote should state.","\u002Fimg\u002Fgen\u002Fporta-correr-terraco.jpg",1792243206000,{"id":142,"kind":6,"locale":7,"slug":143,"path":144,"title":145,"excerpt":146,"seoTitle":147,"seoDescription":148,"category":149,"coverImage":150,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":140,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},86,"thermal-break-aluminium-windows","\u002Fthermal-break-aluminium-windows","Thermal break aluminium windows: how they work, what to compare and when they are worth it","A thermal break is the plastic strip that separates the inner aluminium from the outer. See what it changes for cold and condensation, and what to ask before you choose.","Thermal break aluminium windows: what to compare | JanelaCerta.pt","Thermal break aluminium windows in Portugal: how the break works, what changes for condensation and Uf, finishes near the sea and questions for the installer.","comparacoes","\u002Fimg\u002Fperfis-corte.jpg",{"id":152,"kind":6,"locale":7,"slug":153,"path":154,"title":155,"excerpt":156,"seoTitle":157,"seoDescription":158,"category":49,"coverImage":159,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":140,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},85,"tilt-and-turn-windows","\u002Ftilt-and-turn-windows","Tilt and turn windows (janela oscilobatente): how they work, pros, cons and when to choose them","How the three-position handle works, what fails in the hardware, how much weight a sash can take and what to ask in the quote.","Tilt and turn windows: how they work and when to choose | JanelaCerta.pt","Tilt and turn windows (janela oscilobatente): the handle positions, what fails in the hardware, sash weight, security and what to ask in a quote.","\u002Fimg\u002Fgen\u002Fquarto-luminoso.jpg",{"id":161,"kind":6,"locale":7,"slug":162,"path":163,"title":164,"excerpt":165,"seoTitle":166,"seoDescription":167,"category":62,"coverImage":168,"district":16,"lat":16,"lon":16,"publishedAt":122,"updatedAt":169,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},84,"roller-shutter-box","\u002Froller-shutter-box","Roller shutter box (caixa de estore): insulation, types and what to do when you replace windows","The roller shutter box is often the weak point of a window wall. Why, which types exist in Portugal and what to decide before replacing windows.","Roller shutter box: insulation, types and what to do | JanelaCerta.pt","Roller shutter box and thermal insulation: why it lets in cold air and noise, the types in Portugal and what to do when you replace your windows.","\u002Fimg\u002Fpuxador-estore.jpg",1792600429000,{"id":31,"kind":6,"locale":7,"slug":171,"path":172,"title":173,"excerpt":174,"seoTitle":175,"seoDescription":176,"category":49,"coverImage":50,"district":16,"lat":16,"lon":16,"publishedAt":177,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":179},"buying-guide","\u002Fbuying-guide","PVC window buying guide: what to compare","How to ask for a quote, what to check before you sign, which questions to ask and which warranties to request.","PVC window buying guide | JanelaCerta.pt","PVC window buying guide for Portugal: how to ask for a quote, a checklist before hiring, questions for the installer and warranties in writing.",1791279000000,1791451926000,true,{"id":53,"kind":6,"locale":7,"slug":181,"path":182,"title":183,"excerpt":184,"seoTitle":185,"seoDescription":186,"category":187,"coverImage":188,"district":16,"lat":16,"lon":16,"publishedAt":189,"updatedAt":169,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":179},"problems","\u002Fproblems","Window problems: condensation, cold, noise and leaks","Condensation (also between the panes), draughts, leaks, noise, mould: the most common window problems and what to do.","Window problems: condensation, cold, noise, water","Window problems: condensation (also between double panes), cold and wind, leaks, noise and mould. Where each comes from and what to do, in plain words.","problemas","\u002Fimg\u002Ftermometro-planta.jpg",1791278700000,{"id":191,"kind":6,"locale":7,"slug":192,"path":193,"title":194,"excerpt":195,"seoTitle":196,"seoDescription":197,"category":149,"coverImage":198,"district":16,"lat":16,"lon":16,"publishedAt":199,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":179},3,"comparisons","\u002Fcomparisons","Window comparison: PVC, aluminium and glass types","PVC or aluminium? Double or triple glazing? Compare the most common choices in plain words.","Window comparison: PVC, aluminium, glass | JanelaCerta.pt","Window comparison: PVC vs aluminium and double vs triple glazing. What changes in cold, noise, upkeep and price, explained in plain words.","\u002Fimg\u002Fjanela-pvc-jardim.jpg",1791278400000,{"id":201,"kind":6,"locale":7,"slug":202,"path":203,"title":204,"excerpt":205,"seoTitle":206,"seoDescription":207,"category":90,"coverImage":91,"district":16,"lat":16,"lon":16,"publishedAt":208,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},13,"questions-for-the-installer","\u002Fbuying-guide\u002Fquestions-for-the-installer","10 questions to ask a window installer","The 10 questions to ask the installer, each with the reason, to see whether the quote is serious.","10 questions to ask a window installer | JanelaCerta.pt","The 10 questions to ask a window installer before you decide: measuring, frame, glass, sealing, warranty and after-job support. With the reasons.",1791278100000,{"id":210,"kind":6,"locale":7,"slug":211,"path":212,"title":213,"excerpt":214,"seoTitle":215,"seoDescription":216,"category":49,"coverImage":71,"district":16,"lat":16,"lon":16,"publishedAt":217,"updatedAt":72,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},12,"warranties-and-certificates","\u002Fbuying-guide\u002Fwarranties-and-certificates","Window warranties and certificates: what to ask for","What should be in writing about warranties and which papers to ask for when buying windows.","Window warranties and certificates | JanelaCerta.pt","Warranties and certificates for PVC windows: what to get in writing, which documents to see (CE marking, technical sheets) and where to check the rules.",1791277800000,{"id":219,"kind":6,"locale":7,"slug":220,"path":221,"title":222,"excerpt":223,"seoTitle":224,"seoDescription":225,"category":226,"coverImage":227,"district":16,"lat":16,"lon":16,"publishedAt":228,"updatedAt":229,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},11,"how-to-ask-for-a-quote","\u002Fbuying-guide\u002Fhow-to-ask-for-a-quote","How to ask for a PVC window quote: what to send","What to send and what to ask for, so you get clear quotes that you can compare.","How to ask for a PVC window quote | JanelaCerta.pt","How to ask for a PVC window quote: which sizes and photos to send, what to ask the quote to include and which questions to ask so you can compare.","preco","\u002Fimg\u002Fsala-vazia.jpg",1791277500000,1792241823000,{"id":113,"kind":6,"locale":7,"slug":231,"path":232,"title":233,"excerpt":234,"seoTitle":235,"seoDescription":236,"category":90,"coverImage":237,"district":16,"lat":16,"lon":16,"publishedAt":238,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},"checklist-before-hiring-an-installer","\u002Fbuying-guide\u002Fchecklist-before-hiring","Checklist before hiring a PVC window company","A simple list to check before you sign: company, product, installation, price and warranty.","Checklist before hiring a window company | JanelaCerta.pt","Checklist before hiring a PVC window company: what to check in the quote, the installation, the price and the warranty. Simple and in writing.","\u002Fimg\u002Fobra-instalacao.jpg",1791277200000,{"id":240,"kind":6,"locale":7,"slug":241,"path":242,"title":243,"excerpt":244,"seoTitle":243,"seoDescription":245,"category":62,"coverImage":188,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":169,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},21,"energy-efficiency-windows","\u002Fenergy-efficiency","Window energy efficiency: how to cut heat loss","How a window loses and keeps heat: glass, frame, seals, installation and ventilation. Uw, Ug and Uf in plain words.","How a window loses and keeps heat: glass, frame, seals, installation and ventilation. Uw, Ug and Uf explained in plain words, with no made-up numbers.",1791018000000,{"id":248,"kind":6,"locale":7,"slug":249,"path":250,"title":251,"excerpt":252,"seoTitle":253,"seoDescription":254,"category":226,"coverImage":71,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":255,"name":16,"heroThumb":16,"readingMinutes":93,"isHub":20},20,"pvc-windows-price","\u002Fpvc-windows-price","PVC window prices: what the sources say (October 2026)","Figures published by Habitissimo, Zaask, Fixando and shops, with date and link, and how to turn a reference into a comparable quote.","PVC window prices in Portugal: published figures | JanelaCerta.pt","PVC window prices per m² and per window in Portugal: figures published by sites and shops on 19 October 2026, what they include and how to compare quotes.",1792365677000,{"id":257,"kind":6,"locale":7,"slug":258,"path":259,"title":260,"excerpt":261,"seoTitle":262,"seoDescription":263,"category":49,"coverImage":168,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":140,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},19,"window-opening-types","\u002Fpvc-windows\u002Fopening-types","Window opening types: opening, sliding, basculante or tilt-and-turn","Opening or sliding windows? Basculante or tilt-and-turn? See what each type does well and which to choose for each room.","Window opening types: opening, sliding, tilt-and-turn","Window opening types: opening or sliding, basculante or tilt-and-turn. Comparison tables and which one to choose for each room of your home.",{"id":265,"kind":6,"locale":7,"slug":266,"path":267,"title":268,"excerpt":269,"seoTitle":268,"seoDescription":270,"category":62,"coverImage":40,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":169,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},18,"pvc-window-thermal-insulation","\u002Fpvc-windows\u002Fthermal-insulation","Thermal insulation of PVC windows: how to choose","How heat passes through a window and what helps stop it: glass, frame, seals, Uw value and installation.","How thermal insulation works in PVC windows: double glazing, Low-E, Uw value, seals and installation. What to look at to choose the right window.",{"id":272,"kind":6,"locale":7,"slug":273,"path":274,"title":275,"excerpt":276,"seoTitle":277,"seoDescription":278,"category":49,"coverImage":279,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},17,"window-sound-insulation","\u002Fpvc-windows\u002Fsound-insulation","Sound insulation for windows and glass doors: how to reduce noise","How to soundproof a window or a glass door: seals, shutter box, acoustic laminated glass and installation.","Sound insulation for windows and glass doors","How to soundproof a window or a glass door: cheap checks, anti-noise glass (acoustic laminated), better sealing and what to ask for on your quote.","\u002Fimg\u002Fgen\u002Ffachada-lisboa.jpg",{"id":281,"kind":6,"locale":7,"slug":282,"path":283,"title":284,"excerpt":285,"seoTitle":286,"seoDescription":287,"category":90,"coverImage":237,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":169,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},16,"pvc-window-installation","\u002Fpvc-windows\u002Finstallation","PVC window installation: what to check","A good window badly installed loses performance. See how installation should be done, common mistakes and how to check.","PVC window installation: common mistakes and checks","How PVC windows should be installed: fixing, sealing, common mistakes and how to check the job was done well. Explained in plain, practical words.",{"id":289,"kind":6,"locale":7,"slug":290,"path":291,"title":292,"excerpt":293,"seoTitle":294,"seoDescription":295,"category":49,"coverImage":150,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},15,"pvc-profile-classes","\u002Fpvc-windows\u002Fprofile-classes","PVC profile classes: class A, B or C, what it means","Class A is a PVC profile with outer walls of 2.8 mm or more. See what changes between A, B and C and how to confirm it on a quote.","PVC profile classes: what class A, B or C means","Class A PVC: outer walls of 2.8 mm or more (EN 12608). See how it differs from class B and C, and how to confirm the class on a window quote.",{"id":297,"kind":6,"locale":7,"slug":298,"path":299,"title":300,"excerpt":301,"seoTitle":302,"seoDescription":303,"category":49,"coverImage":198,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":191,"isHub":179},14,"pvc-windows","\u002Fpvc-windows","PVC windows: a simple guide to choosing","What PVC windows are, who they suit and where to start. Five short guides to decide well.","PVC windows in Portugal: a simple guide to choosing","A simple guide to PVC windows in Portugal: what they are, who they suit and what to read first on frame, glass, installation, noise, cold and price.",{"id":104,"kind":6,"locale":7,"slug":305,"path":16,"title":306,"excerpt":307,"seoTitle":308,"seoDescription":309,"category":90,"coverImage":91,"district":16,"lat":16,"lon":16,"publishedAt":310,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},"how-to-measure-windows","How to measure your windows to ask for a quote","You only need a tape measure and five minutes per window. Step by step, in plain words.","How to measure windows to ask for a quote | JanelaCerta.pt","How to measure the window opening to ask for a quote: step by step with a tape measure, what to note and why the installer confirms on site.",1790933400000,{"id":312,"kind":6,"locale":7,"slug":313,"path":314,"title":315,"excerpt":316,"seoTitle":317,"seoDescription":318,"category":187,"coverImage":188,"district":16,"lat":16,"lon":16,"publishedAt":319,"updatedAt":72,"name":16,"heroThumb":16,"readingMinutes":19,"isHub":20},8,"water-on-windows-condensation","\u002Fproblems\u002Fwindow-condensation","Window condensation: on the glass, between the panes and what to do","Water on the inside of the glass is too much humidity meeting cold glass. See where it comes from, what condensation between double panes is and what to do today.","Window condensation: inside, outside, between panes","Window condensation and condensation between double panes: why it appears, the difference between inside and outside, when it is normal and how to fix it.",1790932800000,{"id":93,"kind":6,"locale":7,"slug":321,"path":322,"title":323,"excerpt":324,"seoTitle":325,"seoDescription":326,"category":149,"coverImage":327,"district":16,"lat":16,"lon":16,"publishedAt":328,"updatedAt":329,"name":16,"heroThumb":16,"readingMinutes":93,"isHub":20},"double-or-triple-glazing","\u002Fcomparisons\u002Fdouble-vs-triple-glazing","Double or triple glazing: differences, weight and when it pays off","Triple insulates more, but only if well specified, and it brings extra weight, thickness and cost. See what the sources say and how to decide without promises.","Double or triple glazing: differences, when it pays | JanelaCerta.pt","Double or triple glazing? Compare Ug, weight, thickness, noise, outside condensation and price with manufacturer sources, and see when triple pays off.","\u002Fimg\u002Fgen\u002Fvidro-duplo-detalhe.jpg",1790932200000,1792365900000,{"id":19,"kind":6,"locale":7,"slug":331,"path":332,"title":333,"excerpt":334,"seoTitle":335,"seoDescription":336,"category":149,"coverImage":198,"district":16,"lat":16,"lon":16,"publishedAt":337,"updatedAt":140,"name":16,"heroThumb":16,"readingMinutes":31,"isHub":20},"pvc-or-aluminium","\u002Fcomparisons\u002Fpvc-vs-aluminium","PVC vs aluminium: which to choose for your windows?","PVC and aluminium both work. See what changes in cold, upkeep and looks, and how to decide.","PVC vs aluminium windows: which to choose? | JanelaCerta.pt","PVC vs aluminium windows: what changes in cold, noise, cleaning, large openings and near the sea. In plain words, with no invented prices at all.",1790931600000,[339,353,366,378,389,401,412,424,435,446,456,467,479],{"id":340,"kind":341,"locale":7,"slug":342,"path":16,"title":343,"excerpt":344,"seoTitle":345,"seoDescription":346,"category":16,"coverImage":81,"district":347,"lat":348,"lon":349,"publishedAt":350,"updatedAt":351,"name":352,"heroThumb":81,"readingMinutes":16,"isHub":20},1,"cidade","pvc-windows-peniche","PVC window installation in Peniche","A peninsula battered by the Atlantic: what the wind, salt and damp of Peniche ask of your windows. Measure the opening and ask for quotes.","PVC window installation in Peniche | JanelaCerta.pt","PVC window installation in Peniche: measure the opening, leave your phone number and get quotes from companies in your area.","Leiria","39.35","-9.37",1790845200000,1792600428000,"Peniche",{"id":354,"kind":341,"locale":7,"slug":355,"path":16,"title":356,"excerpt":357,"seoTitle":358,"seoDescription":359,"category":16,"coverImage":360,"district":361,"lat":362,"lon":363,"publishedAt":364,"updatedAt":365,"name":361,"heroThumb":360,"readingMinutes":16,"isHub":20},52,"pvc-windows-lisboa","PVC window installation in Lisboa","Noise, summer heat and buildings of every age: what a window needs in Lisbon. Measure the opening and ask for quotes.","PVC window installation in Lisboa | JanelaCerta.pt","PVC window installation in Lisboa: measure the opening, leave your phone number and get quotes from companies in your area. Get free quotes.","\u002Fimg\u002Fcities\u002Flisboa.jpg","Lisboa","38.725","-9.15",1790935200000,1792600427000,{"id":367,"kind":341,"locale":7,"slug":368,"path":16,"title":369,"excerpt":370,"seoTitle":371,"seoDescription":372,"category":16,"coverImage":373,"district":374,"lat":375,"lon":376,"publishedAt":377,"updatedAt":351,"name":374,"heroThumb":373,"readingMinutes":16,"isHub":20},66,"pvc-windows-porto","PVC window installation in Porto","What Porto rain, river air and street noise ask of your windows. Measure the opening and ask for quotes.","PVC windows in Porto: climate and noise | JanelaCerta.pt","PVC windows in Porto: rain, damp and city noise. Measure the opening, leave your phone number and ask installers for quotes. Free, no commitment.","\u002Fimg\u002Fcities\u002Fporto.jpg","Porto","41.14944","-8.61083",1791363600000,{"id":379,"kind":341,"locale":7,"slug":380,"path":16,"title":381,"excerpt":382,"seoTitle":383,"seoDescription":384,"category":16,"coverImage":385,"district":361,"lat":386,"lon":387,"publishedAt":364,"updatedAt":169,"name":388,"heroThumb":385,"readingMinutes":16,"isHub":20},73,"pvc-windows-sintra","PVC window installation in Sintra","Hills, fog and damp: what a window needs in Sintra. Measure the opening and ask for quotes.","PVC window installation in Sintra | JanelaCerta.pt","PVC window installation in Sintra: measure the opening, leave your phone number and get quotes from companies in your area. Get free quotes.","\u002Fimg\u002Fcities\u002Fsintra.jpg","38.799","-9.388","Sintra",{"id":390,"kind":341,"locale":7,"slug":391,"path":16,"title":392,"excerpt":393,"seoTitle":394,"seoDescription":395,"category":16,"coverImage":396,"district":361,"lat":397,"lon":398,"publishedAt":364,"updatedAt":399,"name":400,"heroThumb":396,"readingMinutes":16,"isHub":20},38,"pvc-windows-cascais","PVC window installation in Cascais","Atlantic wind, salt in the air and mild winters: what a window needs in Cascais. Measure the opening and ask for quotes.","PVC window installation in Cascais | JanelaCerta.pt","PVC window installation in Cascais: measure the opening, leave your phone number and get quotes from companies in your area. Get free quotes.","\u002Fimg\u002Fcities\u002Fcascais.jpg","38.70","-9.417",1792600425000,"Cascais",{"id":402,"kind":341,"locale":7,"slug":403,"path":16,"title":404,"excerpt":405,"seoTitle":406,"seoDescription":407,"category":16,"coverImage":408,"district":361,"lat":409,"lon":410,"publishedAt":364,"updatedAt":365,"name":411,"heroThumb":408,"readingMinutes":16,"isHub":20},54,"pvc-windows-loures","PVC window installation in Loures","From the Bucelas countryside to the Sacavém estuary: what a window needs in Loures. Measure the opening and ask for quotes.","PVC window installation in Loures | JanelaCerta.pt","PVC window installation in Loures: measure the opening, leave your phone number and get quotes from companies in your area. Get free quotes.","\u002Fimg\u002Fcities\u002Floures.jpg","38.83","-9.17","Loures",{"id":413,"kind":341,"locale":7,"slug":414,"path":16,"title":415,"excerpt":416,"seoTitle":417,"seoDescription":418,"category":16,"coverImage":419,"district":420,"lat":421,"lon":422,"publishedAt":350,"updatedAt":423,"name":420,"heroThumb":419,"readingMinutes":16,"isHub":20},41,"pvc-windows-coimbra","PVC window installation in Coimbra","What the Coimbra climate asks of your windows: winter cold, summer heat and damp by the river. Measure the opening and ask for quotes.","PVC window installation in Coimbra | JanelaCerta.pt","PVC windows in Coimbra: an old house in the Alta or a flat near the Mondego. Measure the opening and get free quotes from local companies.","\u002Fimg\u002Fcities\u002Fcoimbra.jpg","Coimbra","40.2111","-8.4292",1792600426000,{"id":425,"kind":341,"locale":7,"slug":426,"path":16,"title":427,"excerpt":428,"seoTitle":429,"seoDescription":430,"category":16,"coverImage":102,"district":431,"lat":432,"lon":433,"publishedAt":434,"updatedAt":351,"name":431,"heroThumb":279,"readingMinutes":16,"isHub":20},2,"pvc-windows-setubal","PVC window installation in Setúbal","Sado estuary, the Arrábida hills and old buildings: what the Setúbal climate asks of your windows. Measure the opening and ask for quotes.","PVC window installation in Setúbal | JanelaCerta.pt","PVC window installation in Setúbal: measure the opening, leave your phone number and get quotes from companies in your area.","Setúbal","38.52","-8.88",1790845500000,{"id":436,"kind":341,"locale":7,"slug":437,"path":16,"title":438,"excerpt":439,"seoTitle":440,"seoDescription":441,"category":16,"coverImage":442,"district":374,"lat":443,"lon":444,"publishedAt":377,"updatedAt":178,"name":445,"heroThumb":442,"readingMinutes":16,"isHub":20},81,"pvc-windows-vila-nova-de-gaia","PVC window installation in Vila Nova de Gaia","Between the Douro river and the Atlantic: what salt air, rain and wind ask of your windows in Gaia.","PVC windows in Vila Nova de Gaia | JanelaCerta.pt","PVC windows in Vila Nova de Gaia: salt air, rain and wind between river and sea. Measure the opening, leave your phone number and ask for quotes.","\u002Fimg\u002Fcities\u002Fvila-nova-de-gaia.jpg","41.133","-8.617","Vila Nova de Gaia",{"id":447,"kind":341,"locale":7,"slug":448,"path":16,"title":449,"excerpt":450,"seoTitle":451,"seoDescription":452,"category":16,"coverImage":453,"district":347,"lat":454,"lon":455,"publishedAt":350,"updatedAt":365,"name":347,"heroThumb":453,"readingMinutes":16,"isHub":20},51,"pvc-windows-leiria","PVC window installation in Leiria","What the Leiria climate asks of your windows: damp winters, occasional frost, autumn rain and hot summers. Measure the opening and ask for quotes.","PVC window installation in Leiria | JanelaCerta.pt","PVC windows in Leiria: damp winters, autumn rain and hot summers. Measure the opening, leave your phone number and get quotes from companies in your area.","\u002Fimg\u002Fcities\u002Fleiria.jpg","39.7431","-8.8069",{"id":457,"kind":341,"locale":7,"slug":458,"path":16,"title":459,"excerpt":460,"seoTitle":461,"seoDescription":462,"category":16,"coverImage":463,"district":361,"lat":464,"lon":465,"publishedAt":364,"updatedAt":365,"name":466,"heroThumb":463,"readingMinutes":16,"isHub":20},60,"pvc-windows-oeiras","PVC window installation in Oeiras","Sea breeze, salt on the coast and damp winters: what a window needs in Oeiras. Measure the opening and ask for quotes.","PVC window installation in Oeiras | JanelaCerta.pt","PVC window installation in Oeiras: measure the opening, leave your phone number and get quotes from companies in your area. Get free quotes.","\u002Fimg\u002Fcities\u002Foeiras.jpg","38.696","-9.309","Oeiras",{"id":468,"kind":341,"locale":7,"slug":469,"path":16,"title":470,"excerpt":471,"seoTitle":472,"seoDescription":473,"category":16,"coverImage":474,"district":475,"lat":476,"lon":477,"publishedAt":377,"updatedAt":478,"name":475,"heroThumb":474,"readingMinutes":16,"isHub":20},35,"pvc-windows-braga","PVC window installation in Braga","Rain, north winds and fog of the Minho: what the climate of Braga asks of your windows.","PVC windows in Braga: rain and cold | JanelaCerta.pt","PVC windows in Braga: Minho rain, north winds and cool winters. Measure the opening, leave your phone number and ask for quotes. Free, no commitment.","\u002Fimg\u002Fcities\u002Fbraga.jpg","Braga","41.55111","-8.42833",1791451921000,{"id":480,"kind":341,"locale":7,"slug":481,"path":16,"title":482,"excerpt":483,"seoTitle":484,"seoDescription":485,"category":16,"coverImage":486,"district":487,"lat":488,"lon":489,"publishedAt":350,"updatedAt":169,"name":487,"heroThumb":486,"readingMinutes":16,"isHub":20},83,"pvc-windows-viseu","PVC window installation in Viseu","What the Viseu plateau asks of your windows: cold, damp winters, hot, dry summers, and a big gap between day and night.","PVC window installation in Viseu | JanelaCerta.pt","PVC windows in Viseu: cold, damp winters, dry summers and big swings between day and night. Measure the opening and get free quotes from local companies.","\u002Fimg\u002Fcities\u002Fviseu.jpg","Viseu","40.6608","-7.9094",[491,502,509,515,522],{"id":492,"kind":493,"locale":7,"slug":494,"path":495,"title":496,"excerpt":497,"seoTitle":498,"seoDescription":499,"category":16,"coverImage":16,"district":16,"lat":16,"lon":16,"publishedAt":500,"updatedAt":501,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":20},90,"pagina","methodology","\u002Fmethodology","How we do the sums and write the guides","How the calculator adds up the square metres, what it leaves out, where the texts come from and how to ask for a correction.","Methodology: how we do the sums and the guides | JanelaCerta.pt","How the window calculator works out the area, what it does not count, where the guides' sources come from, the role of AI in writing and how to ask for corrections.",1792231200000,1792244146000,{"id":503,"kind":493,"locale":7,"slug":504,"path":505,"title":506,"excerpt":507,"seoTitle":508,"seoDescription":507,"category":16,"coverImage":16,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":501,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":20},24,"about","\u002Fabout","About JanelaCerta.pt","An independent website that explains windows in plain words. We do not make or install windows.","About the project | JanelaCerta.pt",{"id":510,"kind":493,"locale":7,"slug":511,"path":16,"title":512,"excerpt":513,"seoTitle":514,"seoDescription":513,"category":16,"coverImage":16,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":18,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":20},25,"privacy-policy","Privacy policy","How JanelaCerta.pt handles visitors' personal data.","Privacy policy | JanelaCerta.pt",{"id":516,"kind":493,"locale":7,"slug":517,"path":16,"title":518,"excerpt":519,"seoTitle":520,"seoDescription":519,"category":16,"coverImage":16,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":521,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":20},26,"cookie-policy","Cookie policy","How JanelaCerta.pt uses cookies.","Cookie policy | JanelaCerta.pt",1791619059000,{"id":523,"kind":493,"locale":7,"slug":524,"path":16,"title":525,"excerpt":526,"seoTitle":527,"seoDescription":526,"category":16,"coverImage":16,"district":16,"lat":16,"lon":16,"publishedAt":246,"updatedAt":178,"name":16,"heroThumb":16,"readingMinutes":16,"isHub":20},27,"terms-of-use","Terms of use","Conditions of use of the JanelaCerta.pt website.","Terms of use | JanelaCerta.pt"]