Sika Everbuild Black Jack 904 Roof Felt and Chipping Adhesive 1 litre - 90401

Sika Everbuild 904 Black Jack Roof Felt and Chipping Adhesive 1 Litre 90401

Barcode: 5029347009410

MPN: 852650

Model: 90401

Size: 1 Litre Tin

Colour: Black

This product is in transition from Everbuild Packaging to the new Sika Packaging

Overview:

Sika Everbuild 904 Black Jack 2 in 1 Roof Felt and Chipping Adhesive 1 Litre is a cold-applied black oxidised bitumen adhesive developed for bonding roofing felt to itself and to common roofing surfaces including concrete, asphalt, metal and timber. Ideal for smaller roofing jobs, repairs and maintenance work, it delivers strong adhesion, good flexibility and dependable resistance to water and weathering. This versatile formula is also suitable for sealing laps and can be used as a cold stone chipping solution, making it a practical choice for both professional roofers and DIY users who need a reliable all-round roofing adhesive.

Benefits and Uses:

• High bond strength.
• Also suitable for gritting.
• Sealing roofing felt laps.
• Bonding Chippings to final layer of felt.

Surface 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 fungus growth should be removed using a stiff bristled brush.
• Where algae and fungi have been present, remove all traces completely and teat the surface with FUNGICIDAL WASH
• in order to kill any remaining spores, thereby discouraging the return of the growths.
• Porous surfaces may be primed with a coat of Flashing Primer and allowed to dry before proceeding.

How to Apply Black Jack 904:

• BLACK JACK ROOF FELT ADHESIVE should be brush or mop applied.
• Left 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 when ever possible.

Used Black Jack 904 As A Cold Gritting Adhesive:

• Gritting solution for roofs with up to a 10 degree slope.
• The roof surface should be clean and free from dirt, dust and all loose debris. may be applied to damp, but not wet or water logged surfaces.
• The compound should be spread evenly direct form the container.
• The Chippings should be applied immediately into the wet film.
• Care should be taken not to over-chip and to ensure that the Chippings cover the film shoulder to shoulder.
• Do not leave any black film exposed.

Cleaning Tools:

• Tools may be cleaned with white spirit.

Approximate Coverage:

• As an adhesive 0.6 to 0.8 litres per square meter
• As a gritting Adhesive 0.7 to 0.9 litres per square meter

FAQs About 904 Black Jack Roof Felt Adhesive 1 Litre

1. What is the Sika Everbuild 904 Black Jack Roof Felt Adhesive used for?
   It is used for bonding bituminous roofing felt to surfaces such as concrete, metal, timber, and asphalt. It’s also ideal for sealing overlaps and securing roofing felt to itself.

2. Can it be applied to wet surfaces?
   No, the surface must be clean, dry, and free from dust, grease, or loose material for the best adhesion.

3. Is it suitable for use on flat and pitched roofs?
   Yes, it can be used on both flat and pitched roofs for bonding and sealing roofing felt.

4. How is the adhesive applied?
   It can be applied using a brush or trowel, depending on the application and surface size.

5. How long does it take to dry?
   The adhesive typically dries to the touch within 6-8 hours and fully cures in 24-48 hours, depending on conditions.

6. Can it be used with non-bituminous roofing materials?
   No, this adhesive is specifically formulated for use with bituminous roofing felt and may not adhere properly to other materials.

7. Is it weatherproof?
   Yes, once cured, the adhesive forms a waterproof bond that resists rain and other weather conditions.

8. Does it remain flexible after drying?
   Yes, the adhesive maintains flexibility, allowing it to accommodate minor movements in the substrate.

9. Can this adhesive be used for gritting purposes?
   Yes, it can be used as a gritting adhesive to bind sand or grit for added surface protection and slip resistance.

10. What is the shelf life of this product?
    When stored in a cool, dry place, the adhesive has a shelf life of up to 24 months.

"Always read the Technical Datasheet prior to first use to ensure you have the correct information and  product for your application"

Take a look at the Full Range of Roofing and Guttering Products.

(Please note that tins may get dented in transit and this is not a reason for return please do not purchase tinned products if this is an issue for yourself.)