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PVC window installation in Caldas da Rainha

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Town
Caldas da Rainha
District
Leiria
Position
39°24′ N · 9°08′ W
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.

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Window type

Material

Material

Colour

Colour

Sizes

Between 600 and 1800 mm

Between 300 and 2200 mm

A rough size is fine.

Extras

Glass

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Pond in a park surrounded by trees and, in the background, a large old building with many windows
A park with a pond in Caldas da RainhaFoto: Joseolgon · CC BY-SA 4.0 · Wikimedia Commons

About Caldas da Rainha

Caldas da Rainha lies in the West, in the Leiria district, about 93 km from Lisbon via the A8. The municipality covers 255.69 km², has 12 parishes and about 59,000 inhabitants. It borders Alcobaça, Rio Maior, Cadaval, Bombarral and Óbidos, and to the north-west has the Atlantic.

The town lies about 10 km from the sea, but three parishes of the municipality, Foz do Arelho, Salir do Porto and Serra do Bouro, are right on the coast. The lowest point of the municipality is sea level and the highest reaches 255 m.

The town’s history is tied to its hot springs. According to tradition, in 1484 Queen Leonor saw people bathing in strong-smelling water, tried it and was cured. She had a spa hospital built, which Wikipedia says is the oldest purpose-built one of its kind in the world. In the 19th century, with the fashion for spas, the town had its greatest splendour.

Today Caldas is known for pottery, for arts and ceramics schools, and for the Praça da República, where there is an open-air fruit and vegetable market every morning. It is a town just inland, with the Atlantic on the doorstep.

What the climate of Caldas da Rainha asks of windows

Wikipedia has no climate data for Caldas da Rainha. The town is about 10 km from the Atlantic and in the West, so some influence from the sea is to be expected: summers cooled by the breeze and damp winters, as in neighbouring towns, and more wind and salt in the parishes near the coast. Here we only give what is reasonable to expect and ask the installer to confirm on site, house by house.

Caldas da Rainha lies a little inland, about 10 km from the sea. The Atlantic is still felt, especially in the coastal parishes.

Wikipedia gives no climate figures, so we only say what is to be expected in the West: damp winters and mild to warm summers.

Section notes Sample text · to be reviewed
  1. Western wind

    Atlantic wind reaches this far, stronger in the coastal parishes and weaker in the town centre. A continuous seal and a firm lock stop air getting in. In the seaside parishes, hardware that copes with wind and salt is also worth it.

  2. Salt in the coastal parishes

    In town, 10 km from the sea, salt matters little, but in Foz do Arelho, Salir do Porto and Serra do Bouro it pays to choose hardware and finishes made for salty air. A rinse with fresh water now and then does good. Tell the installer which parish the house is in.

  3. Western rain and damp

    Rain and humid air are to be expected in winter. Water gets in mostly through the joints, and damp turns into droplets on the glass and mould if the home is not aired. Ask the installer to check the joint with the wall and the drainage of the tracks.

  4. Summer sun

    Summer brings lots of sun, with the sea breeze easing the heat, especially near the coast. Light colours and outside blinds are enough on many facades. In rooms strongly facing west, solar-control glass may be worth it.

Section of a house by the estuaryOn the left, the estuary with the hills behind it, the wind and salt in the air. In the middle, the wall with the window in section. On the right, the living room. Wind and salt arrive from the water against the window. Indoors, damp air rises. The summer sun comes through the glass and warms the room.abcd
Section · house near the coast, but inland Estuary · Wall · Room
Bedroom with a white bed and a large window with light curtains
AI-generated illustrationBedroom with a large window. · Illustrative image, not a photo of this place.
Climate sheet for Caldas da Rainha: the level of each condition, from low to high
ConditionLevelClimate sheet
HumidityMediumExpected, with the sea about 10 km away.
WindMediumFelt more in the coastal parishes.
WinterMediumDamp, as expected in the West.
SummerMediumSea breeze cooling the air.

Levels for comparison, not measurements.

SourcesWikipédia (pt): Caldas da RainhaWikipedia (en): Caldas da Rainha

Climate zone of Caldas da Rainha

Portugal's building energy rules put every place in a winter zone (I1 to I3) and a summer zone (V1 to V3). In Caldas da Rainha the zone depends on the altitude of the building, so we show the ranges.

Winter zone by altitude in Caldas da Rainha and the maximum Uw of windows
Building altitudeWinter zoneMaximum Uw, W/(m²·°C)
up to 160 mI12.80
from 161 to 387 mI22.40
above 388 mI32.20

Summer zone: V2 at any altitude.

Maximum solar factor of windows (gtot,máx): V2: 0.10 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 Caldas da Rainha

Caldas da Rainha · conditions and solutions Sample text · to be reviewed
Solutions table for Caldas da Rainha: how each material and each glazing responds to local conditions
WindowGlass
Local conditionPVCAluminiumDouble glazingTriple glazing
Western wind
SuitableGood: a continuous seal stops the wind from the west.SuitableCopes well. Check the gaskets and the lock.SuitableYou notice it more in comfort at the glass than in wind.Needs careHeavier: hinges and frame must be ready for it.
Salt in the coastal parishes
SuitableWipe clean with a damp cloth, no painting needed.SuitableIn town it matters little; near the coast, ask for a salt-proof finish.SuitableNo issues here, just clean it.SuitableSame as double glazing on this point.
Western rain and damp
SuitableGood frame insulation, which helps against water on the glass.Needs careAsk for a thermal break; without it the frame is cold inside.SuitableA good base for houses with moderate cold and damp.SuitableLess cold on the glass, but airing the room is still needed.
Summer sun
SuitableWorks in summer and winter. Light colours help.It dependsDepends on profile and colour. A thermal break is better.It dependsOn sunny facades, ask about solar-control glass.It dependsHolds heat in, but the sun comes through. Look at solar control.
  • Suitable
  • Needs care
  • It depends

In Caldas da Rainha, the distance to the sea changes the choice. The installer confirms on site what suits your parish.

Homes in Caldas da Rainha

The homes in the area change what is worth asking of the windows.

  • Historic centre

    In the centre, near the spa hospital and the park, there are 19th-century houses from the time when spas were fashionable. Tall, old windows call for careful measuring and often for made-to-measure windows. Ask the council whether there are facade rules.

  • Detached and semi-detached houses

    In the coastal parishes, such as Foz do Arelho, there are houses and holiday homes, more exposed to wind and salt. If the house is closed part of the year, ask for windows with their own ventilation. Hardware that resists salty air makes a difference.

  • New apartments

    Around the centre there are more recent blocks with already tighter windows. What is often missing is ventilation, and damp builds up in the kitchen and bathroom. Windows with an airing opening help a lot.

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Installer measuring a window opening with a tape measure in an empty room
AI-generated illustrationThe installer confirms the sizes on site.

Towns near Caldas da Rainha

Live in another municipality in the West? These lie around Caldas da Rainha. Write your town in the request.

Cannot find your area? Write it in the request.

Whitewashed wall with a white PVC window in a blue frame
AI-generated illustrationPVC window in a whitewashed wall. · Illustrative image, not a photo of this place.

Caldas da Rainha in photos

Town or coastal parish?

The municipality has an inland part and a coastal part. In town, 10 km from the sea, salt matters little. In Foz do Arelho, Salir do Porto and Serra do Bouro, on the Atlantic, wind and salt count as in a beach town.

Write the parish in the request: the advice we give changes from one zone to the other. In a house by the lagoon and the sea, it pays to look at hardware, joints and ventilation more carefully than in a house in the centre of Caldas.

A spa town and a pottery town

Caldas was born from hot springs and is today also pottery country, with arts and ceramics schools and several museums. The centre has 19th-century buildings, from the time when wealthier classes came to the spa.

People living in these houses find tall windows, old woodwork and irregular openings. Ask for careful measuring, ask about solutions that respect the old design and check whether the council has facade rules. A new window should improve comfort without spoiling the character of the building.

General notes

Yes, near the coast wind and salt count more than in the town centre. Choose hardware for salty air and wash the window with fresh water now and then. Tell the installer the house is on the coast, because that changes the recommendations.

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