01
New roof or new membrane
The build-up is open. This is when a cover board fits between insulation and membrane.
Matching product lineVlamShield DEK
View the applicationMineral roof layers for solar roofs
Mineral protection.
For your PV roof.
Three product lines for flat roofs with photovoltaics: a thin cover board below the new membrane, a weather-resistant mineral board for edges and details and a site-applied mineral layer on the existing membrane.
For warehouses, logistics and commercial buildings in Germany and the Netherlands. Supplied per project, with the documentation of the specific board or system selected.
Product lines
Three lines. One question: where in the roof?
Each line has a fixed place in the build-up. That place determines the loading, the installation method and the evidence you need. So choose the position first, then the product.
Roof build-up
Where each layer sits, and what it does there.
From structural deck to PV module, a flat roof is a sequence of layers that carry, protect and seal one another. VlamShield adds a mineral layer at three positions. Select a layer to highlight its position.
Schematic representation. Not a construction drawing; the actual build-up and detailing follow from the project.
Applications
Start with the situation on your roof.
A new membrane opens up different options from an existing PV roof whose membrane stays in place. And edges, penetrations and upstands need an approach of their own.
02
Existing PV roof, membrane stays in place
The membrane stays. The question is what can go on top of the existing waterproofing.
Matching product lineVlamShield VLOEI
View the application
03
Roof edges, upstands and penetrations
Everything meets at the edge. This is where a weather-resistant board fits.
Matching product lineVlamShield WEER
View the application
In practice
What a mineral layer delivers in concrete terms.
A firm substrate below the membrane
On soft insulation, PV supports, ballast and foot traffic press locally on the waterproofing. A thin, rigid cover board spreads that pressure and gives the membrane an even, flat substrate. That is the classic place of DEK.
Details that stand up to the weather
At roof edges, upstands and penetrations the membrane turns up and is vulnerable. A weather-resistant mineral board protects these surfaces mechanically with a homogeneous mineral finish, without being waterproofing itself. That is where WEER sits.
Existing roof, no stripping
Where an intact membrane with PV is already in place, breaking it open is often not an option. A site-applied mineral layer follows the existing membrane, provided adhesion, seams and drainage have been assessed beforehand. That is the VLOEI route.
The right evidence for the right layer
We separate strictly: reaction to fire of the material, performance of the complete roof assembly and system assessments. The project proposal states which document belongs to which layer.
Knowledge
Answers to questions from practice.
Short, concrete articles on material, roof build-up, moisture, weight and evidence. Each article ends with the question: which line fits this situation?
- 01Mineral-bound nonwoven sheets: chemistry, roof build-up and the limits of fire tests.A thin fibre-reinforced mineral layer can add protection beneath new roof waterproofing. Publicly documented BarrierSheet assemblies help explain the principle, its benefits and the questions that remain.
- 02Is A1 enough? What a material class does and does not say about your roof.A non-combustible board is a strong starting point. But a roof is not a board: it is a stack of layers, seams, fixings and a PV system on top. Which evidence belongs to which level?
- 03Above or below the membrane: where does the mineral layer belong?Two boards can look alike and still play completely different roles. The position in the roof determines loading, installation and evidence. A walk through the build-up, from bottom to top.
