PRODUCT INFORMATION
Water Block Mastic - sold per tube
Water-block mastic supplied by the tube for compatible compression-sealed EPDM details.
Available product options
Available selections are: Water Block Mastic - sold per tube.
Supplied by EPDM Rubber by Forti Nova within the FlexiProof roofing range.
Where is water block mastic used?
It forms a compressed water-blocking seal behind specified clamped or mechanically terminated membrane details. It is not a surface roof coating.
Water Block Mastic: questions answered by Forti Nova
What is Water Block Mastic used for?
It forms a compressed water-blocking seal behind specified clamped or mechanically terminated membrane details. It is not a surface roof coating.
Does the roof need to be dry?
Yes. Adhesives, primers, cleaners and sealants must be used on suitable clean, dry surfaces within the stated weather and temperature limits.
Can I use the same adhesive everywhere?
No. Main decks, perimeters, upstands, seams and non-porous substrates can require different products.
How should the surface be prepared?
Make it sound, clean, dry and free from dust, oils, frost and loose material. Follow any product-specific cleaning or priming step.
How much product do I need?
Calculate from the measured application area and the current coverage figure. Substrate porosity and application method can affect consumption.
Can I mix products from different EPDM systems?
Do not assume cross-brand compatibility. Use the products approved for the selected membrane and detail.
Can Forti Nova confirm the correct product?
Yes. Send the membrane type, substrate, roof size and a photo of the detail before ordering.
Need a project-specific answer? Ask Forti Nova for free practical advice from installers who use these materials, or browse our EPDM adhesives, primers and sealants.
