95 g
Economy diffusion membrane for standard configurations.
Request configuration ↗CHOOSE A SYSTEM
BILKA CRAIOVA / BILKA systems
Roof membranes
Membrane selection depends on the roof build-up, not just its weight.
BILKA / ROOF MEMBRANES
TECHNICAL ILLUSTRATIONVisual created for this local presentation
DIFFUSION · W1 WATER TIGHTNESS
Roof membranes
A membrane should not be selected by weight alone. Pitch, build-up, temporary exposure, mechanical strength and vapour transfer all matter.
95–180 g/m²diffusion range
W1water tightness
Sd ≈ 0,02 mvapour diffusion
75 m²typical roll
01 / VARIANTS
Choose the right expression for the project.
The final variant is confirmed after survey, pitch, build-up and installation details.
120 g
Balanced weight and mechanical strength.
Request configuration ↗140 g
More robust membrane for contemporary roofs.
Request configuration ↗150 g
Higher mechanical strength in the standard range.
Request configuration ↗180 g
Heavier membrane with stronger wind/exposure behaviour.
Request configuration ↗02 / CHARACTERISTICS
Technical data without hiding the details.
Values are indicative for the family shown; the data sheet and certificate applicable to the order take precedence.
Water tightnessW1
Vapour permeabilitySd ≈ 0,02 m
Temperature range-30…+80°C
Roll width1,5 m
Roll length50 m
Roll area75 m²
Constructionmulti-layer polypropylene membranes, depending on product
04 / WHY IT MATTERS
The system should be planned as a whole.
Not weight alone
Match the membrane to pitch, insulation and roof ventilation.
Protects insulation
Helps vapour escape while limiting external water ingress.
Correct installation
Overlaps, tapes and exposure periods should follow product documentation.
05 / DOWNLOADS
Data sheets, guides and certificates.
PDF data sheets and guides, available right here.
CATALOGUEBILKA residential cataloguePDF · Open document↓WARRANTYBILKA warranty certificatePDF · Open document↓GUIDEHow to choose your roofPDF · Open document↓
BILKA is the manufacturer brand. Documentation and warranties are issued by the manufacturer; the applicable conditions are those in the valid document at the time of order.
YOUR PROJECT
We help identify which variant makes sense for your roof.
Send dimensions, photos or a plan. We return with a coherent configuration, not a generic product list.