Pitched roofs last for about 50 years, flat roofs for 40 to 60 years. They should be inspected by a roofer every year. During the inspection, roofers seal cracks and replace broken panels, shingles or tiles. If they need to replace too many panels, shingles or tiles, renovation is a good idea. If the roof and facade are not yet thermally insulated, you should have the building envelope and attic insulated. A well-insulated house roof and attic have 10 to 20 percent energy-saving potential.
With our renovation calculator you can analyze the condition of individual components such as the roof or facade, plan renovations that are due in a cost-optimized manner and estimate the renovation costs.
Regular roof inspections avoid costly repairs, protect the roof from storm damage and detect cracks or damage before they become really expensive. Expect to pay 300 to 500 Swiss francs for the annual roof inspection of an average single-family home.
For a new roofing, calculate with 100 to 160 Swiss francs per square meter of roof surface. For an average single-family house, that's about 18,000 to 29,000 Swiss francs. In addition, there are the costs for pitched roof insulation. The cost of special panels or tiles ranges up to 300 Swiss francs per square meter. Concrete tiles, fiber cement corrugated sheets or clay tiles are the cheapest, marble or natural slate the most expensive.
If you renew the roof truss at the same time, you should expect to pay between 140 and 280 Swiss francs per square meter. A new roof truss for a single-family house costs 25,000 to 50,000 Swiss francs or more.
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For pitched roof insulation, calculate with 50 to 100 Swiss francs per square meter for under-rafter insulation, 100 to 150 Swiss francs per square meter for between-rafter insulation or 150 to 250 Swiss francs per square meter for above-rafter insulation. Pitched roof insulation for an average single-family home costs 9,000 to 18,000 Swiss francs, 18,000 to 27,000 Swiss francs or 27,000 to 45,000 Swiss francs. In addition, there are the costs of pitched roof renovation. Under-rafter insulation is sufficient if the attic is not developed and you do not want to have it developed. Between-rafter insulation makes sense if you are planning to extend the roof truss in the foreseeable future. Above-rafter insulation is particularly energy-efficient and is especially suitable if you are having the roof of your house re-roofed and want to use as much living space as possible under the roof.
If you insulate the roof truss at the same time, you should expect to pay between 40 and 80 Swiss francs per square meter. That makes 4,500 to 9,000 Swiss francs for an average single-family house.
Roofers also insulate facades. If you hire them to insulate the building envelope and not just the roof, you kill two birds with one stone and save on renovation costs.
Calculate 100 to 400 Swiss francs per square meter of roof surface: 50 to 150 Swiss francs for roofing and waterproofing plus 50 to 250 Swiss francs for insulation. That makes 8,000 to 32,000 Swiss francs for an average-sized single-family house. Bitumen or plastic membranes covered with gravel are the cheapest option. If you want to have the flat roof greened, you should calculate with 30 to 40 Swiss francs per square meter for substrate and seeding, i.e. about 3,000 Swiss francs.
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Roofers do more than roof or insulation. They install lightning conductors, skylights, gutters, downspouts, skylight domes, rain gutters or snow guard systems, install photovoltaic systems and prepare all connections for the electrician. For this, most roofers in Switzerland charge 70 to 100 Swiss francs an hour. To this must be added the cost of scaffolding, if necessary, materials, equipment or machinery, and the environmentally sound disposal of old insulation, panels, shingles or tiles.
We are asked from time to time how much lightning conductors cost. A lightning protection system with arrestor, down conductor and grounding for a single-family house costs 2,000 to 3,000 Swiss francs. Then there are the maintenance costs. The system must be checked every 10 years or after a lightning strike.
Cosmetic measures such as new roofing are not subsidized. Insulation, on the other hand, is subsidized in most cantons. It can therefore be worthwhile to combine roof renovation with insulation and to obtain subsidies for the insulation. The prerequisite is that the heat transfer coefficient or U-value of the insulation after renovation is less than 0.2 watts per square meter and Kelvin (W/m2K). All cantons except Bern, Geneva, Jura, Neuchâtel, Ticino and Vaud subsidize the insulation with at least 40 Swiss francs per square meter. Insulation between rafters that costs 15,000 Swiss francs is subsidized by around 6,000 Swiss francs. The easiest way to apply for subsidies for energy-efficient renovations is via the das Gebäudeprogramm (available in German, French and Italian).
All prices are indicative only (as of 2023) so you can estimate the cost. If you want an exact offer, ask our certified roofers from your region.
