Membrane weight alone does not define performance.
FASGAR · MEMBRANE
PVC membrane roof specification for retractable systems.
The membrane is both the visible roof finish and a moving technical component. Material data, fire evidence, UV exposure and replacement strategy should be explicit.
SHORT ANSWER
Specify the membrane as an exact component—not just 'PVC fabric'.
Request exact membrane construction, weight/thickness, coating, colour, fire evidence where required, UV/weather data, joint/weld details, cleaning guidance and replacement pathway for the chosen FASGAR roof.
KEY PROJECT POINTS
What should drive the decision.
These are project inputs, not substitute engineering or automatic product approvals.
Fire classifications must match the exact membrane and test scope.
Dark/light colours change appearance and solar behaviour.
Welded seams and edge details are part of water performance.
Movement/folding creates repeated mechanical stress.
Replacement access and future material matching should be planned.
Define material identity
Use the exact membrane manufacturer/product or verified specification where available rather than a generic PVC label.
Match evidence to the project
Fire, UV and weather evidence should be current and relevant to the exact material construction.
Detail moving edges and seams
Joints, hems, guides and attachment points experience repeated movement and should be part of maintenance inspection.
Plan lifecycle replacement
Membranes are replaceable components. Access, colour matching and control of future replacement dimensions should be considered early.
PROJECT INPUTS
What to have ready before asking for the exact system.
A stronger brief shortens the gap between product interest and a useful technical/commercial response.
Exact membrane product
Weight/thickness
Coating
Colour
Fire requirement
UV/weather exposure
Seam/joint method
Attachment/guide details
Operating cycles
Cleaning regime
Replacement access
Warranty
EVIDENCE BOUNDARY
Do not transfer membrane certificates between different fabric constructions.
Fire and material evidence should identify the exact membrane product/build-up and applicable test. Final project requirements remain destination-specific.
FAQ
Questions project teams usually need answered.
Is all PVC roof fabric the same?
No. Base cloth, coating, weight, fire performance, UV resistance and finish vary.
Can one fire certificate cover any replacement fabric?
No. Evidence should apply to the exact material/product being supplied.
Can the membrane be replaced later?
Retractable membranes are generally replaceable components, subject to exact system design and availability.