Sika Black Jack 904 Roof Felt And Chipping Adhesive 2.5L 90402

Sika Black Jack 904 Bitumen Roof Felt Adhesive 2.5L 90402

Product Code: 90402 | SKU: 486993 | MPN: 852651 | Barcode: 5029347009427

Sika Black Jack 904 Bitumen Roof Felt Adhesive 2.5L is a cold-applied, oxidised bitumen-based adhesive for roof felt bonding, lap sealing and mineral chipping work on prepared roof surfaces. It is used where a repair job involves several working points and needs a practical maintenance quantity.

The 2.5 litre tin is suited to multiple felt overlaps, local resurfacing details, small-to-medium patch areas and roof maintenance work carried out in more than one section. It is suitable for roofers, builders, maintenance teams and competent DIY users working on correctly prepared roofing felt, metal, concrete or wood.

Where This 2.5L Tin Fits

This mid-size roof felt adhesive is used when the job has several prepared areas to bond, seal or dress during the same repair session.

• Bonding roofing felt to prepared roofing felt, metal, concrete or wood.
• Sealing several felt laps, edge sections and roll-end overlaps.
• Sticking down loose felt across more than one suitable repair point.
• Bonding mineral chippings into the wet adhesive film on the final felt layer.
• Maintaining small-to-medium flat roof areas with a cold-applied adhesive.
• Cold gritting on suitable roof sections up to a 10 degree slope.

Key Performance Benefits

• Balanced Maintenance Tin: Useful for roof repair jobs with several working points.
• Multi-Section Use: Suits multiple laps, local felt details and small-to-medium repair sections.
• Cold-Applied Method: Allows roofing felt to be bonded without hot works when used as directed.
• Felt And Lap Function: Supports felt bonding and overlap sealing on compatible prepared surfaces.
• Cold Gritting Use: Can bond mineral chippings to the final felt layer on suitable roof areas.
• Tough Flexible Film: Forms a bitumen film that hardens and softens with changing temperatures.

Why Choose This Roof Felt Adhesive

Choose Sika Black Jack 904 2.5L when the roof repair involves repeated lap sealing, several small repair points or a moderate felt bonding section. It is a practical maintenance tin for jobs that need more than a single local repair but are still controlled in scale.

This size works well when the roof area needs several prepared sections treated in the same visit, without turning the description into a size comparison list.

How It Fits Into The Job

This adhesive is used after the roof has been inspected and each repair section has been prepared for bonding.

• Step 1: Prepare each repair section by removing dirt, dust, grease, rust, loose coatings and unstable material.
• Step 2: Brush or mop the adhesive over the required working area and allow tack to develop where needed.
• Step 3: Lay the felt or apply chippings while the adhesive film is ready to bond.

Quick Use Guide

Use only on compatible roof surfaces and follow the current manufacturer technical data sheet before application. When treating several repair points, prepare each section before opening the working area so the adhesive can be applied and covered in a controlled sequence.

• Stir the adhesive thoroughly before use and during application where needed.
• Check every working area is clean, stable and free from dust, grease, rust, loose paint and loose felt.
• Repair cracks, holes and loose felt before spreading adhesive over the section.
• Prime porous concrete, cement and lightweight concrete screeds where required, then allow the primer to dry before applying felt.
• Apply by brush or mop and leave open for 15 to 30 minutes, depending on conditions, so tack can develop.
• Place felt into the adhesive film carefully and press, rub or roll it down to improve contact and exclude trapped air.
• Maintain felt laps of at least 75 mm at edges and at least 150 mm at roll ends.
• On timber roof structures, nail down the first layer of felt before bonding later felt layers.
• For cold gritting, apply chippings immediately into the wet film and avoid leaving exposed black adhesive.
• Allow 24 hours drying time, depending on conditions, before checking adhesion.
• For cold gritting work, leave the completed surface dressing for at least 72 hours before lightly brushing away excess chippings.
• Clean tools immediately after use with Sika Wonder Wipes, white spirit or a suitable cleaner.

Compatible Products

For cleaning hands, tools and surfaces after roof adhesive work, use Heavy Duty Sika Everbuild Textured Wonder Wipes – 75 Wipe Tub.

For preparing several repair sections before adhesive application, view Cleaning and Surface Preparation Products.

For brushes and brooms used to clear loose dirt and debris before maintenance work, view Brooms and Hand Brushes for Cleaning Tasks.

• Specification

  Weight	4 kg
  Brand	Black Jack
  Manufacturer	Sika Everbuild
  Reference Code	90402
  Reference Code sika	852651
  Type	Roof Felt and Chipping Adhesive
  Size	2.5 litre
  Colour	Black

• Product FAQs

  Q: What is Sika Black Jack 904 Roof Felt and Chipping Adhesive used for?
  A: It is used for bonding roofing felt and embedding roof chippings on suitable prepared roof surfaces.
  Q: What size is this Black Jack 904 adhesive?
  A: This product is supplied in a 2.5 litre tin.
  Q: When should I choose the 2.5 litre tin?
  A: Choose the 2.5 litre tin for small to medium roof repairs where a 1 litre tin may not provide enough adhesive.
  Q: Can this adhesive be applied to damp surfaces?
  A: For felt bonding, the surface should be clean and dry. For cold gritting, it may be used on damp surfaces, but not wet or waterlogged surfaces.
  Q: How is this roof adhesive applied?
  A: It can be applied by brush or mop to a clean, stable and prepared roof surface.
  Q: When should roof chippings be applied?
  A: Roof chippings should be embedded into the adhesive while the adhesive layer is still wet.

• Downloads

  Sika Black Jack 904 Bitumen Roof Felt Adhesive Safety Data Sheet
  Sika Black Jack 904 Bitumen Roof Felt Adhesive Technical Data Sheet
  Sika Black Jack 904 Bitumen Roof Felt Adhesive Bring It On Flyer