
Solar
Power from your own roof.
We design and install solar PV systems on homes, halls and farms.
Service
From roofers who know the roof
We accompany your project from site assessment and design through to installation. Because we are roofers too, we know what matters when fixing a system to the roof.
Your own solar system lowers energy costs in the long run, uses renewable energy, shrinks your carbon footprint and can increase the value of the property.
What we do
Site assessment
Orientation, pitch, shading and condition of the roof.
Design
A system that suits your roof and your consumption.
Installation on roofs and facades
Secure fixing, watertight penetrations.
Roof and solar in one project
A new roof and a solar system from one source.
Process
How we work
- Site visitWe look at the roof and take measurements.
- QuoteMaterials, schedule and price – clear and in writing.
- ExecutionOur own team works cleanly and on time.
- HandoverJoint inspection, site left clean.

Why ISO TRAPEZ
Solar. Done right.
- The roof comes firstWe check whether the roof can carry the system for many years.
- One point of contactRoof, facade and solar from one team.
- A clear quoteScope and price in writing, before we start.
Projects
From our building sites




FAQ
Frequently asked questions
Is a system worth it on my roof?
It depends on orientation, pitch, shading and consumption – we assess the site.
Does the roof need renovating first?
If the covering is old, it often pays to renew the roof first. We do both.
How much does a system cost?
Price on request – after assessing the site.
More services

Roofing & repairs
New build, replacement or repair: we roof homes, halls and industrial buildings and put existing roofs back in order.
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Facades
We clad halls, commercial and industrial buildings with trapezoidal sheets and sandwich panels – in many colours, matching the roof.
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Roof renovation
We renew roofs that have seen better days – with metal roof tiles or trapezoidal sheets, and new gutters and roof windows on request.
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Let's talk about your project.
Tell us briefly what it is about. After a site visit you receive a clear quote in writing.