PVC window installation in Ponta Delgada
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- Town
- Ponta Delgada
- District
- Região Autónoma dos Açores
- Position
- 37°44′ N · 25°41′ 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
Window schedule
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About Ponta Delgada
Ponta Delgada is the largest city in the Azores and the region’s political capital. It lies on São Miguel island, and the municipality is the biggest in the archipelago, with about 67,000 inhabitants (2021), 24 parishes and coast to the north, south and west. To the east it borders Ribeira Grande and Lagoa.
The land is volcanic, made up of the Picos region and the Sete Cidades massif, with its crater lakes such as the Blue Lake and the Green Lake. The name comes from a point of biscuit-lava rock, thin and almost at sea level. The city is described as flat, modern and cosmopolitan.
It began as a fishing settlement and grew a lot after the 1522 earthquake that flattened the old capital, Vila Franca do Campo. The customs house opened in 1518 and Ponta Delgada became a city in 1546. In the 17th century the woad trade brought merchants, some English. In the 19th century, orange exports to the United Kingdom gave the city its golden age, with palaces and romantic gardens and an artificial harbour.
Today the historic centre has buildings of dark stone and white lime, like the City Gates. Most homes in the municipality stand along the roads that circle the island, and life revolves around services, farming and the port, where cruise ships call.
What the climate of Ponta Delgada asks of windows
Ponta Delgada has a maritime climate, which Wikipedia classifies as temperate, with no dry season. The ocean and the Gulf Stream keep temperatures very steady, with averages near 14.5 degrees in winter and about 22 in summer. It rains all year, more in the cool season, and average humidity is around 80%. In winter strong south-westerly winds blow, in summer they shift north, and the sky is often cloudy.
Ponta Delgada sits in the middle of the Atlantic, on a volcanic island. Temperatures change little, but wind, rain and damp are always near. The sea surrounds the municipality on three sides.
So the window here works more against water and wind than against the sun.
- Atlantic wind
In winter strong south-westerly winds blow, according to Wikipedia; in summer they come from the north. On an island with no shelter, wind hits from the side and drives rain against the facade. Sealing and how the window is fixed to the wall decide whether it whistles and lets water in.
- Salt and sea spray
In town and on the coast there is salt in the air, and windy days carry sea spray to windows. Salt wears hardware and leaves marks on the glass. Rinse them with fresh water and ask for hardware made for marine settings.
- Rain and damp all year
It rains in every month, more in winter, and humidity stays near 80%. Water must run off well through tracks and sills, and the home must be aired. Without that, mould appears behind wardrobes, in corners and in joints.
- Sun that comes and goes
The sky is often cloudy, so the sun varies and the heat is moderate. What matters is using the light without losing warmth. On good days, south-facing windows warm the home, and double glazing helps hold that heat.
| Condition | Level | Climate sheet |
|---|---|---|
| Rain | High | Spread across the year, more in winter. |
| Humidity | High | About 80% on average. |
| Wind | High | Strong south-westerly winds in winter. |
| Winter | Low | Average near 14 degrees; never below 4. |
| Summer | Low | Average near 22 degrees; never above 30. |
| Sun | Low | The sky is often cloudy. |
Levels for comparison, not measurements.
Climate zone of Ponta Delgada
Portugal's building energy rules put every place in a winter zone (I1 to I3) and a summer zone (V1 to V3). In Ponta Delgada 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 474 m | I1 | 2.90 |
| from 475 to 807 m | I2 | 2.60 |
| above 808 m | I3 | 2.40 |
Summer zone: V2: up to 226 m; V1: above 227 m
Maximum solar factor of windows (gtot,máx): up to 226 m, V2: 0.10 in weak-inertia spaces and 0.56 in medium or strong inertia spaces; above 227 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 Ponta Delgada
| Window | Glass | |||
|---|---|---|---|---|
| Local condition | PVC | Aluminium | Double glazing | Triple glazing |
Atlantic wind | SuitableGood, with sealing and fitting built for wind. | SuitableHandles it well; check the play in the hardware. | SuitableWind does not change the choice of glass much. | Needs careHeavier; the hardware has to be strong. |
Salt and sea spray | SuitableDoes not rust; rinse with fresh water now and then. | Needs careNeeds a strong finish and frequent rinsing. | SuitableThe glass copes well with salt spray. | SuitableSame as double glazing on this point. |
Rain and damp all year | SuitableGood against rain and damp, with a well-made joint. | It dependsNeeds a thermal break to avoid condensation. | SuitableCuts the cold, damp glass on the inside. | It dependsMore comfort in cold homes; ask for advice on site. |
Sun that comes and goes | SuitableLittle heat to hold back; light is what counts. | SuitableNo big heat problem; look at the thermal break. | SuitableDouble glazing is enough, without a strong solar coating. | It dependsHeat matters little; judge by insulation alone. |
- Suitable
- Needs care
- It depends
In Ponta Delgada wind and water weigh most, not the sun. The installer checks everything on site.
Homes in Ponta Delgada
The homes in the area change what is worth asking of the windows.
Historic centre
The centre has historic buildings of dark stone and whitewashed walls, near the City Gates and the port. Ask the town council about the rules before changing facade windows. In old homes, wooden windows suffer from damp, and the installer should check the state of the wall.
Detached and semi-detached houses
Across the parishes, many houses stand along the roads that circle the island, with a yard. Exposed to the Atlantic wind, they need good sealing. In higher areas, mist and rain are more frequent, and damp weighs in winter.
New apartments
In town there are newer apartment blocks, some near the port. Wind and rain hit hard on the upper floors, and balcony doors are the most exposed point. Good sealing and clean drainage prevent leaks.
How it works
Tell us what you need
Measure the opening on the drawing and confirm your town.
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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 Ponta Delgada
Do you live in another parish of the municipality, or elsewhere on São Miguel? These are the nearby areas and municipalities.
Cannot find your area? Write it in the request.
Damp cold, no frost
In the Azores it almost never freezes: according to Wikipedia, temperatures below 4 degrees or above 30 have never been recorded. But winter is damp and windy, and the home feels cold without it being very cold outside.
- Walls and glass turn damp on the inside.
- Mould appears behind wardrobes.
- Well-sealed windows and double glazing keep in the heat from the heating.
- Airing a few minutes a day, even in rain, lets the damp air out.
Grand houses and 19th-century gardens
In the 19th century, orange exports to the United Kingdom enriched the city, which gained palaces and gardens in the English taste. One of those gardens is now the garden of the University of the Azores. Many of those houses have tall wooden windows and thick walls.
When changing windows in homes like these, design counts as much as insulation. Ask the installer whether the old window can be repaired, ask the town council whether rules apply and prefer solutions that keep the look of the facade and hold back damp and wind.
General notes
Water usually enters through the joint with the wall and through the tracks. Good sealing and clear drainage prevent that. Ask the installer to check both and the shutter box, and clean the tracks before the rainiest months.
Humidity is near 80% and walls get cold. Airing daily, even when it rains, and having well-sealed windows helps. Avoid drying laundry indoors in closed rooms.
See the guide Why is there water on the glass?
A well-fixed window with good hardware copes. Faults show up at gaps and weak catches. Ask the installer to check the fixing and catches, especially on upper floors.
Ask the town council first: in the historic centre there may be facade rules. The design and colour of the window are usually the most sensitive point. If it is a block, speak to the residents' association too.
Yes. Write your town in the request. The municipality has 24 parishes, from the centre to the west of São Miguel island. In higher areas, such as Sete Cidades, mist and rain weigh more.
Yes. Double glazing keeps the inner pane less cold, and that cuts water and mould. It also holds in the heat from the heating in a damp winter. Triple rarely pays off in this climate.
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