PVC window installation in Castelo Branco
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- Town
- Castelo Branco
- District
- Castelo Branco
- Position
- 39°49′ N · 7°30′ W
- Tilt and turn: opens to the side and tilts for fresh air.
What will it cost? Start with the sizes
Window type
Material
Colour
Sizes
Between 600 and 1800 mm
Between 300 and 2200 mm
A rough size is fine.
Extras
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About Castelo Branco
Castelo Branco is the capital of the Castelo Branco district and of the Beira Baixa, in the interior of Portugal, about 50 km from the Spanish border. The municipality is the third largest in the country by area, at 1,438 km², with 19 parishes and about 52,000 inhabitants, of whom more than 33,000 live in the city. It borders Fundão, Idanha-a-Nova, Vila Velha de Ródão, Proença-a-Nova and Oleiros.
The city began next to a pre-Roman hillfort and, by the early 12th century, there was a settlement on top of the Cardosa hill, with the town growing down the slope. The city lies at 384 m and the castle at 490 m. Today the city spreads over the flat areas around the hill. The soil is mostly granite, and the Ponsul and Ocreza rivers pass nearby, both tributaries of the Tagus.
Unlike other cities in the region, Castelo Branco did not grow on the textile industry, so it did not suffer as much from the closure of the mills. The industrial zone employs about 4,000 people, with companies in refrigeration, agri-food, electronic components, plastics, metal structures and glass and stone processing.
The city has the Episcopal Palace garden, with its statues and tiles, and is known for the Castelo Branco embroidery, on linen bedspreads. For people living here, dry air and marked seasons call for windows designed for both ends of the year.
What the climate of Castelo Branco asks of windows
According to Wikipedia, Castelo Branco has a Mediterranean climate, influenced by continentality, with little humidity through the year. The yearly average temperature is around 15.5 °C, with about 25 °C in July. Rain is most plentiful from October to January, with more than 100 mm a month, and July and August are dry. In January lows reach -4 °C, with records of -7 °C, and snow sometimes appears.
Castelo Branco lies inland, between the castle hill and the valleys of the Ponsul and Ocreza. The air is dry through the year.
Winter brings cold and rain, and summer is hot. The house has to cope with both seasons.
- Cold draughts
In a city of dry air, what you feel most at home are the cold winter draughts. A good seal all round is worth more than an extra pane. It is wise to check the gaskets and lock on every window before November.
- Inland dust
The dry, hot summer raises dust from the fields and the roads. The tracks of sliding windows collect that dust and need regular cleaning. Smooth profiles and easy-to-reach tracks make cleaning simple and make the window last longer.
- Cold winter nights
January lows reach -4 °C, and heavy rain comes from October to January. A cold frame and glass chill the walls around the window. A frame that insulates well avoids cold walls and the droplets that show on them in the morning.
- July sun and heat
July and August are the driest months, with about 25 °C on average in July and much higher maxima. South and west facades heat up a lot. Outside blinds and solar-control glass hold the heat back, and the cooler nights help with airing.
| Condition | Level | Climate sheet |
|---|---|---|
| Summer | High | July is the hottest, driest month. |
| Winter | Medium | Cold, with occasional snow. |
| Rain | Medium | Mostly from October to January. |
| Humidity | Low | Air is not very humid through the year. |
| Sun | High | Very bright summers. |
Levels for comparison, not measurements.
SourcesWikipédia (pt): Castelo BrancoWikipedia (en): Castelo Branco
Climate zone of Castelo Branco
Portugal's building energy rules put every place in a winter zone (I1 to I3) and a summer zone (V1 to V3). In Castelo Branco the zone depends on the altitude of the building, so we show the ranges.
| Building altitude | Winter zone | Maximum Uw, W/(m²·°C) |
|---|---|---|
| up to 342 m | I1 | 2.80 |
| from 343 to 620 m | I2 | 2.40 |
| above 621 m | I3 | 2.20 |
Summer zone: V3: up to 799 m; V2: from 800 to 1085 m; V1: above 1086 m
Maximum solar factor of windows (gtot,máx): up to 799 m, V3: 0.10 in weak-inertia spaces and 0.50 in medium or strong inertia spaces; from 800 to 1085 m, V2: 0.10 in weak-inertia spaces and 0.56 in medium or strong inertia spaces; above 1086 m, V1: 0.15 in weak-inertia spaces and 0.56 in medium or strong inertia spaces. The value is for the opening with the solar protection fully activated. North-facing windows are exempt. What is the solar factor?
The maximum Uw applies to windows in housing in new and renovated buildings (Portaria n.º 138-I/2021), with exceptions, for example conservation works. The zone is calculated with the Manual SCE method, from the region (NUTS III) and the altitude, not by parish. Ask the designer or an SCE expert to confirm the one for your building. Checked on 19 October 2026. What is Uw?
Solutions table for Castelo Branco
| Window | Glass | |||
|---|---|---|---|---|
| Local condition | PVC | Aluminium | Double glazing | Triple glazing |
Cold draughts | SuitableA good seal keeps dust and hot air outside. | SuitableCopes well. Check the seals and the lock. | SuitableChanges little here. The seal matters more. | Needs careHeavier: hardware and frame must be able to carry it. |
Inland dust | SuitableCopes with dry air without painting and cleans easily. | SuitableGood in dry climates. Clean dust out of the tracks now and then. | SuitableDry air and dust do not affect the glass. | SuitableSame as double glazing on this point. |
Cold winter nights | SuitableInsulates well on cold winter nights. | Needs careWithout a thermal break, the frame gets cold on cold nights. | SuitableA good step up from single glass. | SuitablePays off on January nights, especially on north-facing walls. |
July sun and heat | It dependsLight profiles heat up less. Dark colours suffer in strong sun. | It dependsHeats up in strong sun. A thermal break performs better. | It dependsIn strong heat, the solar control of the glass matters a lot. | It dependsInsulates, but without solar control the sun still comes in. |
- Suitable
- Needs care
- It depends
In Castelo Branco, winter cold and July heat both count. The installer confirms on site what suits your facade.
Homes in Castelo Branco
The homes in the area change what is worth asking of the windows.
Historic centre
In the old quarter, near the castle, the Episcopal Palace and the 16th-century doorways, there are narrow streets and stone houses. They call for careful measuring and windows that respect the old proportions. Ask the council whether the facade has rules before ordering.
Traditional houses
There are granite houses with thick walls, which tend to keep cool in summer but lose heat through old openings. Replacing old windows is one of the steps that changes winter comfort the most. Check the wood around the opening is sound before fitting.
New apartments
In the flat districts around the hill there are more recent blocks, many of flats. With dry air, what weighs most is winter cold, and July heat on sunny facades. Ask the installer to look at the orientation of each room.
How it works
Tell us what you need
Measure the opening on the drawing and confirm your town.
We pass your request to the right companies
We process your request and send it to the local companies that best fit your town and what you asked for.
The companies contact you with quotes
They get in touch and send you their quotes and offers. Compare them and choose, with no obligation.
We do not make or fit windows. We pass your request on and explain.
Towns near Castelo Branco
Live in another municipality of Beira Baixa? These lie around Castelo Branco. Write your town in the request.
Cannot find your area? Write it in the request.
Castelo Branco in photos
Dry air, cold nights
Because the air is not very humid, droplets on the glass are less frequent than on the coast. That does not mean cold does not count: with lows of -4 °C in January and records of -7 °C, winter nights chill the walls and the glass.
Insulation of the frame and the glass is the main point. Ask for double glazing with good insulation, multi-chamber profiles and a leak-free fitting. If the house has granite walls, the joint between window and stone is where comfort is won or lost.
A town on the way between the Tagus and the mountains
Castelo Branco lies between the Tagus, to the south, and the mountains of the Beira Baixa. Wikipedia highlights its political and strategic importance through history, and today the city is a services and trade centre for the municipality.
In the municipality there are very different zones: the city, at 384 m, and villages isolated in the countryside. A village house, far from the city, takes more wind and dust than a flat in the centre. Say in the request where the house is, and whether it is lived in all year or only part of it.
General notes
Fewer than on the coast, but there can be on very cold nights, when the glass goes icy. Airing the house and having a glass that stays less cold inside fixes most of it. The kitchen and bathroom, which produce steam, are the rooms most affected.
PVC insulates well against cold and needs no painting. With double glazing and a good seal, it is usually enough for the city's cold nights. In granite walls, the joint with the stone remains decisive.
July and August are hot and dry. On south and west-facing facades, solar-control glass and outside blinds can help a lot. On north-facing facades, it is normally not needed.
You can, but the effect is bigger if you replace all of them in the room, because the old ones keep letting cold air through. Start with the most exposed, to the north and the wind. Ask the installer to check the state of the stone and render around the opening.
Yes. Give your locality in the request; we do not install, we only pass the request on to installers who work in that area. Also say if the house is isolated, because wind and dust change a lot between a village and the city.
Winter is cold but short, and snow is occasional. Double glazing is usually the starting point. Triple can pay off on north-facing or very exposed walls, but it is heavier, and should be compared with double for the specific case.
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