JanelaCerta.ptPT
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New windows in your town.

Tell us where, and we will call you. Measure your opening on the drawing, leave your mobile number and installers in your area send quotes.

1200 mm1200 mmJ1J1 · Tilt and turn, 2 sashesPVC · White · double glazing1.44 m²
  • Tilt and turn: opens to the side and tilts for fresh air.

What will it cost? Start with the sizes

Window type

Material

Material

Colour

Colour

Sizes

Between 600 and 1800 mm

Between 300 and 2200 mm

A rough size is fine.

Extras

Glass

Window schedule

Each row is one window. Tap its mark (J1, J2…) to edit it.

No windows on the list yet. Set one up and tap “Add to the list”.

Pick a type and sizes, then add the window to the list to see the square metres.

Get an estimate

Request form

JanelaCerta.pt

Window scheduleNo sizes yet
Free. No obligation.

How it works

  1. Tell us what you need

    Measure the opening on the drawing and tell us your town.

  2. We call and answer your questions

    Plain words, no rush, no obligation.

  3. We pass your request on and you get quotes

    Your request goes to installers in your area. They are the ones who send you quotes.

Measure my window

We do not make or fit windows. We connect people and explain.

Good windows keep the warmth inside

In winter the sun comes in through the window and warms the house. A poor window lets that warmth escape. A good window keeps it in.

What matters is the whole set: the glass, the frame, the seals and the installation.

  • Winter sunLight comes through the glass and warms the room.
  • Warmth indoorsThe warmth stays in the room instead of leaving through the window.
  • Double glazingTwo panes of glass with a gap between them hold back the cold.
  • Cold stays outsideThe cold from the street does not get in.
  • InstallationIf the seal around the window fails, air gets through anyway.
Section of a window in winterOn the left, the street, with sun and cold. On the right, the living room. The sun comes in through the glass and warms the room. The warmth stays inside and the cold stays out.abcde
Section of a window in winter Street · Wall · Room
Living room with winter sun coming through the windows and lighting the floor
Attached photoWinter light in a living room.

Windows in your town

Index of townsPick the one closest to you

Your town is not on the list? Write it in the request.

Go to the request
Street in a Portuguese town with white walls and windows
Attached photoHouses on a Portuguese street.

Short, clear guides

Cross-section of a window frame with double glazing
Attached photoSection of a frame with glass.

General notes

Is the service free?

Yes. Asking for a call costs nothing and does not oblige you to anything.

What do you do with my details?

We use your name, mobile number and town to call you. We only pass them to installers in your area if you agree in the request. You can ask us to delete them.

Privacy policy

Do I need to measure my windows first?

No. A rough size on the drawing already helps. The installer confirms everything on site. If you want to measure, see our guides.

See all guides

You do not make or fit windows, so who does the work?

Installers in your area. We connect people and explain whatever is needed, in plain words.

Prefer a call back?

Leave your name, mobile number and town. Free, no obligation.

Free. No obligation.

Do you install or make windows?

Receive requests from customers in your area.

I want to be a partner

Free. No obligation.

Request a call