904 Felt Adhesive, Everbuild Black Jack
904 BITUMEN ROOF FELT ADHESIVE, EVERBUILD® BLACK JACK® is a cold-applied, black, oxidised bitumenbased adhesive used to bond roofing felt to itself, concrete, asphalt, metal, wood and similar surfaces. Also suitable for...
1000 In Stock
904 BITUMEN ROOF FELT ADHESIVE, EVERBUILD® BLACK JACK® is a cold-applied, black, oxidised bitumenbased adhesive used to bond roofing felt to itself, concrete, asphalt, metal, wood and similar surfaces. Also suitable for use as a cold-gritting solution.
- Bonding all types of roofing felts to metal, concrete, roofing felt, wood.
- Sealing roofing felt laps
- Bonding chippings to final layer of felt.
APPLICATION INSTRUCTIONS SUBSTRATE PREPARATION
Ensure that the surface to be repaired is dry and clean, i.e. free from all loose debris, rust, dirt and grease. All traces of algae and fungal growth should be removed using a stiff-bristle brush. Where algae and fungi have been present, remove all traces completely and treat the surface with EVERBUILD®
FUNGICIDAL WASH in order to kill any remaining spores, thereby discouraging any return of growth. Porous surfaces may be primed with a coat of BLACKJACK® BLACK BITUMEN PRIMER and allowed to dry before proceeding.
In general the felt-laying techniques employed should be those detailed in BS 8217:1994. EVERBUILD® BLACK JACK® 904 BITUMEN ROOF FELT ADHESIVE should be brush or mop applied to the surface and left “open” for 15 to 30 minutes (depending upon drying conditions) in order to develop its full tackiness.
The felt should be placed into the wet adhesive film carefully, rubbing or rolling each section down to ensure maximum contact with the adhesive and ensuring that all air has been excluded. The felt should then be weighted down until the felt has adhered to the surface. Whenever possible, the felt should be unrolled into the adhesive and rolled home with a lighter roller (approx. 25kg).
As a Lap Cement
Laps at the edges should be at least 75mm wide and laps at roll ends should be at least 150mm. Laps and final edges should be liberally treated on their underside with EVERBUILD® BLACK JACK® 904 BITUMEN ROOF FELT ADHESIVE and well compacted.
On timber roof structures, the first layer of felt must be nailed down to comply with BS 8217:1994. The second and third layers may be bonded with EVERBUILD® BLACK JACK® 904 BITUMEN ROOF FELT ADHESIVE.
CONCRETE AND LIGHTWEIGHT CONCRETE SCREEDS
As they are often extremely porous, these surfaces will require a priming coat to ensure successful adhesion of EVERBUILD® BLACK JACK® 904 BITUMEN ROOF FELT ADHESIVE. Prime with BLACKJACK® BITUMEN AND FLASHING PRIMER. It is essential that the primer has completely dried before the first layer of felt is applied.#
Twenty four hours after laying, check all bonding to ensure that full adhesion has been obtained. Particularly check all laps; if in doubt, press home or roll any felt that appears to be lacking full adhesion.