Rooftop Terrace Specialists

Shading a roof terrace — what to consider with an attic parapet extension?

Rooftop terraces come with specific challenges: parapet structural load-bearing, wind loads at height, waterproofing, fire protection. A pergola designed for ground level often can’t be transferred to a roof 1:1.

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Rooftop terraces are not gardens

What works on the patio rarely works on the roof.

The building physics are different. The structural engineering is different. Permits are often more stringent. And classic pergola foundations won’t work.

Attic parapet structural analysis

Most attic parapets support 50–80 kg/m². A classic pergola weighs more. Solution: weight optimization or a structural penetration with static load verification.

Wind load at height

At a height of 20 m, the pergola acts like a sail in a storm. The structure must be designed to be 20–30% stronger than at ground level.

Roof membrane sealing

Every penetration of the roof membrane is a risk for moisture damage. Professional sealing is mandatory — otherwise mould may develop on the floor below.

With SkyPergola, you have a partner who knows rooftop terraces.

The solution

Rooftop terrace pergolas with structural calculations and waterproofing expertise.

We have specialised in complex installation situations since 2020. Rooftop terraces are one of our core focuses.

  • Structural calculation based on parapet data We obtain the structural data for your parapet and calculate whether the pergola can be installed directly on the parapet or whether we need to penetrate through it.
  • Sealing by our roofing contractor partner For penetrations, we work with Swiss roofing contractors who specialize in waterproofing. One point of contact for everything.
  • Building Committee Communication Rooftop-terrace pergolas are visible to neighbours and from the street — often a topic in the building committee. We handle all communication.
Get free advice now

Rooftop Terrace Consultation

Tell us about your rooftop terrace.

Storey, floor area, attic height — we’ll get back to you within 24 h with an initial assessment of whether the project is realistic.

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Customer testimonials

What our customers say

"The pergola has completely transformed our terrace — we live outside now. Installation was clean and done in one day."

Martin B. Zug

"Honest advice, a fair quote, professional installation. We haven’t regretted our decision for a single moment."

Andrea K. Lucerne

"SkyPergola handled the building permit application and everything that came with it. For us, it was stress-free from the first conversation through to final acceptance."

Daniel S. Zurich
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Rooftop Terrace FAQ

No. For multi-storey houses with a thin parapet and a weak roof slab, it’s sometimes not cost-effective. We’ll tell you that honestly.

Yes, in most cantons. Rooftop terrace structures often require a permit — also because they are visible from the outside. We handle the entire building permit application process.

Rooftop terraces take longer than standard pergolas: planning and structural calculations 2–4 extra weeks, plus building permit application 4–8 weeks. Total 3–4 months from the first enquiry.

Usually 25–50% more expensive than the same pergola at ground level — due to structural engineering requirements, waterproofing, and specialized installation. In the consultation, you’ll get a realistic assessment.