Interior renovation · VD

Thermal insulation in Morges

Thermal insulation in Morges: old-town façades, La Côte villas, roofs and cellars. Permits, CECB energy certificate, subsidies and preparing your quote.

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Are you looking for a thermal insulation company in Morges for a villa, a flat or a building? Needs differ between a house above the quays, an old-town building and a more recent rental block. The first step is to find out where the heat is escaping, then to check what the commune allows on your building.

The most common insulation work in Morges

Thermal insulation covers several areas of work, which are rarely all tackled at the same time:

  • Façades, from the outside or the inside;
  • The roof and attic, often the most obvious item in an older house;
  • Floors and cellars, when the floor of the living rooms is cold;
  • Thermal bridges, the areas where heat escapes even though the insulation is fine elsewhere: window surrounds, balconies, junctions between slab and wall;
  • Windows, whose replacement complements wall insulation.

In Morges, the building stock is varied. Around the castle and the Grand-Rue, there are old buildings whose walls and roofs were not designed for today’s requirements. Further from the quays, villas and rental blocks offer more latitude, but the logic remains the same: identify the weak point, then choose the solution suited to the construction.

What the old town and the lakeside change for insulation

Morges is a town on La Côte, on the shore of Lake Geneva, with its castle, its old town along the Grand-Rue and its quays. This setting bears directly on the choice of work.

In the old town, the façade is part of the image of an entire street. External insulation there changes the thickness of the walls, the window sills and the roof overhangs. Depending on the building, it may be refused or heavily restricted. Insulating from the inside, or insulating the attic or cellar floors, is then often more realistic. It has its own constraints: loss of living space, a risk of damp if the old wall is not treated with care, and junctions to rework at windows and partitions.

Near the lake and on the slopes, the local climate is mild compared with that of the Jura or the Vaud Alps, where snow imposes other requirements. That does not make insulation superfluous: in winter, a poorly insulated building remains costly to heat, and in summer an unprotected roof lets heat build up in the attic. Sloping sites can also complicate access to the worksite: scaffolding on inclined ground, delivery of materials, a narrow passage between two plots. State this from the start of your quote request, as it affects how the work is organised.

Villa, flat or co-ownership: who decides on insulation

The legal situation determines what you can do on your own.

  • Villa owner: the decision is yours, but the façade and roof require a permit if the exterior appearance changes.
  • Flat co-owner: the façade, the roof and the communal areas belong to the co-ownership. Insulating the building envelope is decided at the meeting of co-owners, not individually.
  • Tenant: the landlord’s written consent is essential for anything affecting the walls, windows or attic.
  • Small business or landlord: insulation work may affect several tenants. Remember to tell the occupants about the schedule and the disruption.

Permits and subsidies: what to check in the canton of Vaud

In the canton of Vaud, the building permit is issued by the municipality of the commune. When cantonal departments must give an opinion, the file goes through the cantonal permits centre (CAMAC). For external insulation, a change of windows or a roof alteration, the first question to put to the commune of Morges is simple: is a permit required for my building, at my address? The answer depends on the building, its location and any protection it has, and only the commune can give it.

On the energy side, the canton has a Vaud energy law, applied by the cantonal energy directorate, which also manages a cantonal subsidy programme. The Buildings Programme may support certain insulation work depending on the canton. Conditions, amounts and timing change: nothing should be assumed. Find out from the competent cantonal department before signing a quote, as a grant is generally tied to a prior application.

The CECB, the cantonal energy certificate for buildings, is worth considering before you start. It draws up an energy assessment and helps with prioritising: roof first, windows next, or the other way round. In an older house, this order often makes the difference between a well-spent budget and a disappointing expense.

Preparing your insulation quote request in Morges

The more precise your description, the easier the quotes are to compare. Gather the following:

  1. The type of building: villa, rental block, old-town building, approximate year of construction if you know it.
  2. The areas concerned: façades, roof, attic, floors, cellars, windows. Say what bothers you: a feeling of cold, damp walls, summer heat under the roof.
  3. The preferred insulation method, or your hesitation between outside and inside, specifying whether the building is protected or located in the old town.
  4. Access: slope, narrow street, courtyard, floor level, whether scaffolding can be erected.
  5. Existing documents: CECB, plans, photos of the façade and attic.
  6. Your status: owner, co-owner, tenant with the landlord’s consent.

A good quote itemises each part separately: the area treated, the type and thickness of the material, preparation of the substrate, installation, finishes (render, lining, repainting), scaffolding, waste removal and treatment of thermal bridges. If a permit is needed, check who handles it and whether this work is included in the offer.

The cost depends on the area, the insulation method, the material, the condition of the substrate, access to the site, the complexity of details (balconies, dormers, window surrounds) and the finishes. There is therefore no reliable figure without a visit: the quote sets it. Compare several offers based on the same description, and be wary of a quote that specifies neither the material nor the thickness.

To get started, you can request a quote, free and without obligation: your request is passed to tradespeople and companies in the region, who will get back to you.

Useful pages for your project in Morges

Updated 29 October 2026

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Frequently asked questions

Do I need a permit to insulate the façade of a house in Morges?
Insulating from the outside changes the appearance of the façade, so a permit may be required depending on the municipality and the building. In the canton of Vaud, building permits are issued by the municipality. Check with the commune of Morges before signing anything.
Can a building in the old town of Morges be insulated from the outside?
In an historic area such as the Grand-Rue, altering a building's envelope is tightly controlled, and a protected façade rarely lends itself to external insulation. Insulating from the inside, or insulating the attic or cellar, may be an option, but you need to check with the commune what is allowed for your address.
What is the CECB for before insulation work?
The CECB, the cantonal energy certificate for buildings, assesses the energy condition of the building and helps rank the work in order of usefulness. It stops you starting with something that does not address the real weak point. It may also be requested for certain grants: check with the competent cantonal department.
Are there subsidies for insulating a home in the canton of Vaud?
The Buildings Programme and a cantonal subsidy programme may support certain insulation work. Conditions change and the application is generally made before the work begins. Check the current rules with the cantonal energy directorate before committing to the work.
Can a tenant have their flat insulated in Morges?
A tenant cannot decide alone on work affecting the structure or the façade. The landlord's written consent is required, and the request may also have to go through the co-ownership if the building belongs to one. A quote can be requested once you have that consent.