Sika Black Jack-904 Bitumen Roof Felt Adhesive
From: £7.74 inc. VAT
£6.45 ex. VAT
- Area of use: EXT
- Time to full cure: 24 hours depending on drying conditions
- Volume: 1KG, 2.5KG, 5KG, 25KG
- Container Type: Tin
- Type: Roof Adhesive
- Colour: Black
- Brand: SIKA
- Manufactuer: SIKA
Sika® Black Jack®-904 Bitumen Roof Felt Adhesive is a cold-applied, oxidised bitumen-based adhesive designed for bonding all types of roofing felt to a variety of surfaces including metal, concrete, and wood. It is ideal for sealing felt laps and can also be used as a cold gritting solution for bonding mineral chippings. The adhesive provides high bond strength and forms a tough yet flexible film that hardens and softens with temperature changes, ensuring long-lasting performance.
Key Points:
– Cold-applied, oxidised bitumen adhesive for roofing felt.
– Bonds felt to metal, concrete, wood, and seals felt laps.
– Can be used as a cold gritting solution for mineral chippings.
– Forms a tough, flexible film that adjusts with temperature changes.
Shelf Life – 24 months from date of manufacture in unopened and undamaged containers.
Storage Conditions – Contains a flammable solvent and all precautions against fire must be taken during storage. Store between +5 and +25 °C
For more in our range of Bitumen products please click here. For our full range of products from Sika, please click here.
For more information on Bond It and their products, you can visit their website here
Suitable for
▪ bonding all types of roofing felts to metal, concrete,
roofing felt, wood.
▪ Sealing roofing felt laps.
▪ Bonding chippings to final layer of felt.
LIMITATIONS
Do not use in areas where surfaces may later come into contact with solvents, and avoid inhaling vapours in confined spaces. On timber roof structures, the first layer of felt must be nailed down, with subsequent layers bonded using Sika® Black Jack®-904 Bitumen Roof Felt Adhesive. Always test compatibility before use. As the manufacturer cannot anticipate all possible uses, it is the user’s responsibility to determine suitability. If in doubt, contact the Technical Services Department for advice.
ECOLOGY, HEALTH AND SAFETY
Users must consult the most recent Safety Data Sheets (SDS) before using any products. The SDS provides guidance on safe handling, storage, and disposal of chemical products, including physical, ecological, toxicological, and other safety-related information.
APPLICATION INSTRUCTIONS
SUBSTRATE PREPARATION
All surfaces must be dry, stable, and thoroughly cleaned to remove dirt, dust, and grease. Wet surfaces should be brushed and wiped dry. Repair cracks and holes with Black Jack® 903 Bitumen Trowel Mastic, and secure loose felt with Sika® Black Jack®-904 Roof Felt Adhesive. Wire-brush metal surfaces to remove rust, and apply a rust-inhibitive primer such as red lead or zinc phosphate for long-term protection. Remove loose or blistered paint, including tar-based systems. Roughen new galvanised surfaces or treat with a suitable etch primer. Prime concrete, cement, and other porous surfaces with Black Jack® 902 Bitumen & Flashing Primer and allow to dry. Remove algae and moss using Sika® Mouldbuster where necessary.
APPLICATION
Stir the adhesive thoroughly before and during use. Apply by brush or mop and leave “open” for 15–30 minutes to develop tackiness. Carefully place the felt into the adhesive, ensuring full contact and eliminating air pockets, then weight it down until fully adhered. Whenever possible, unroll the felt into the adhesive and roll with a light roller (~25 kg).
AS A LAP CEMENT
Edge laps should be at least 75 mm wide and roll-end laps at least 150 mm. Treat the underside of laps and edges liberally with adhesive and compact thoroughly.
TIMBER ROOFS
On timber structures, nail down the first felt layer, then bond subsequent layers with Sika® Black Jack®-904 Bitumen Roof Felt Adhesive.
CONCRETE AND LIGHTWEIGHT CONCRETE SCREEDS
Prime highly porous surfaces with Black Jack® 902 Bitumen & Flashing Primer, ensuring the primer is fully dry before applying the first felt layer.
AFTERCARE
Check adhesion 24 hours after laying, paying special attention to laps. Press or roll any felt showing incomplete bonding.
AS A COLD-GRITTING SOLUTION
Suitable for roofs up to a 10° slope. Ensure surfaces are clean, free of debris, and preferably dry. Spread the adhesive evenly in 20 m² areas, then apply chippings immediately, ensuring full coverage. Allow the surface dressing to cure for at least 72 hours, then brush off any excess. Avoid leaving black adhesive film exposed.
CLEANING OF TOOLS
Clean all tools immediately after use with Sika® Wonder Wipes or white spirit. Wipe off any spillage before the bitumen sets.
You must be logged in to post a review.
| Elementlength | |||||||
| up to 1,5 m | up to 2,5 m | up to 3,5 m | up to 4,5 m | up to 2,5 m | up to 3,5 m | up to 4,5 m | |
| Type of window frame material |
Minimum witdth of joints for a butled mounting b in mm | Minimum witdth of joints for a inner mounting b in mm | |||||
| Hard PVC (white) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Hard PVC and PMMA (dark) (colour extruded) | 15 | 20 | 25 | 30 | 10 | 15 | 20 |
| Hard PUR integral foam | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Wood-aluminium-window | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (bright) | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (dark) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Wooden window frame | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Related Products
From: £3.11 inc. VAT
£2.59 ex. VAT
From: £3.28 inc. VAT
£2.73 ex. VAT
From: £8.03 inc. VAT
£6.69 ex. VAT
From: £2.64 inc. VAT
£2.20 ex. VAT
From: £13.14 inc. VAT
£10.95 ex. VAT
From: £2.69 inc. VAT
£2.24 ex. VAT
From: £6.64 inc. VAT
£5.53 ex. VAT
From: £2.72 inc. VAT
£2.27 ex. VAT
From: £7.85 inc. VAT
£6.54 ex. VAT
From: £4.09 inc. VAT
£3.41 ex. VAT
From: £38.16 inc. VAT
£31.80 ex. VAT
From: £2.52 inc. VAT
£2.10 ex. VAT
From: £9.95 inc. VAT
£8.29 ex. VAT
From: £8.78 inc. VAT
£7.32 ex. VAT
From: £44.94 inc. VAT
£37.45 ex. VAT
£2.87£2.26 inc. VAT£2.39£1.88 ex. VATBond It MM50 is a mid mod, acetoxy cure, sanitary grade silicone sealant containing a powerful anti‐fungal compound to resist mould growth. A one part silicone sealant specifically designed for areas which are prone to high humidity or frequent wetting. For sealing around worktops, basins, sinks, bed basins to vanity units and also to seal shower trays and shower units. Features & Benefits: - Permanently Flexible - Mould Resistant - Contains powerful fungicide - Waterproof - For Internal Use - High Viscosity Formula - Tools Quickly For seal£2.87£2.26 inc. VAT£2.39£1.88 ex. VATBond It MM50 is a mid mod, acetoxy cure, sanitary grade silicone sealant containing a powerful anti‐fungal compound to resist mould growth. A one part silicone sealant specifically designed for areas which are prone to high humidity or frequent wetting. For sealing around worktops, basins, sinks, bed basins to vanity units and also to seal shower trays and shower units. Features & Benefits: - Permanently Flexible - Mould Resistant - Contains powerful fungicide - Waterproof - For Internal Use - High Viscosity Formula - Tools Quickly For seal£23.04£18.11 inc. VAT£19.20£15.09 ex. VATBond It Trowel Mastic can be applied to most common roofing surfaces including mastic asphalt, roofing felt, corrugated iron, cast iron, fibre/cement, slates, lead, copper, zinc, concrete and timber. Fibre reinforced making it ideal for filling cracks and holes and cures to give a strong and flexible compound. Storage LifeMinimum of 5 years from date of manufacture under good storage conditions in original unopened containers. Store under cover away from sources of heat and ignition. Keep containers sealed when not in use. For all other Bond-it-
£3.47 inc. VAT
£2.89 ex. VATBond-It De-Bond Mate is A non-drip gel formula for the complete removal of cured silicone sealant, particularly when silicone has been accidentally smeared over glass, ceramics or countertops. Removes all types of silicone sealant, leaving surfaces ready for re-sealing. For all other Bond-it products on our website, please click here.For any further information, you may need on Bond-it, please visit their website here.
Reviews
There are no reviews yet.