
Bostik All Weather Brush Bituminous Waterproofer – 5L / 22.5L
Heavy-Duty, Solvent-Based Waterproofing for Roofs
Bostik All Weather Brush is a premium-grade, solvent-based bituminous waterproofer designed for application on all common roofing materials. It dries to form a tough, black protective coating that provides immediate resistance to water ingress. This formulation is ideal for use in conditions where rain or frost prevents the use of water-based emulsions.
Key Features & Benefits
- Instant Waterproofing: Provides protection upon application—ideal for emergency or cold-weather work
- Compatible with Most Roof Types: Apply to mastic asphalt, roofing felt, slates, lead, zinc, copper, fibre cement, and corrugated iron
- Brush-On Consistency: Heavy-grade compound allows easy, controlled application
- Weather Resistant: Withstands rain, frost, and UV exposure for long-lasting performance
- Forms Tough Black Film: Dries to a durable, water-resistant finish
Technical Specifications
- Colour: Black
- Form: Paste / thick liquid
- Specific Gravity: Approx. 1.0
- Composition: Filled bitumen solution with organic fibre content
- Coverage: Approx. 0.7 L/m² per coat; two coats for optimal results
- Drying Time: Typically 24 hours (depending on conditions)
- Application Temperature: +5 °C to +35 °C
- Service Temperature: –10 °C to +85 °C
- Shelf Life: Up to 24 months unopened
Application Instructions
- Ensure the surface is sound, dry, and free from rust, dust, and contaminants
- Prime porous or dusty surfaces with Bostik Penetration Primer
- Stir well before use. Apply with a brush at 0.7 L/m² per coat, in at least two coats at right angles
- Allow each coat to dry fully before recoating
- For reinforcement, embed a fibre mesh between coats if required
- Clean tools with white spirit immediately after use
Safety & Storage
- Store in a cool, dry place between +5 °C and +35 °C
- Keep upright and tightly sealed when not in use
- Wear protective gloves, clothing, and eye protection during use
- Refer to the product SDS for full handling and first aid information
Bostik All Weather Brush is the go-to solution for reliable bituminous roof protection where traditional emulsions are unsuitable. Its instant waterproofing action and robust finish make it ideal for professional roofing repair and protection year-round.
Original: $38.45
-70%$38.45
$11.54Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Heavy-Duty, Solvent-Based Waterproofing for Roofs
Bostik All Weather Brush is a premium-grade, solvent-based bituminous waterproofer designed for application on all common roofing materials. It dries to form a tough, black protective coating that provides immediate resistance to water ingress. This formulation is ideal for use in conditions where rain or frost prevents the use of water-based emulsions.
Key Features & Benefits
- Instant Waterproofing: Provides protection upon application—ideal for emergency or cold-weather work
- Compatible with Most Roof Types: Apply to mastic asphalt, roofing felt, slates, lead, zinc, copper, fibre cement, and corrugated iron
- Brush-On Consistency: Heavy-grade compound allows easy, controlled application
- Weather Resistant: Withstands rain, frost, and UV exposure for long-lasting performance
- Forms Tough Black Film: Dries to a durable, water-resistant finish
Technical Specifications
- Colour: Black
- Form: Paste / thick liquid
- Specific Gravity: Approx. 1.0
- Composition: Filled bitumen solution with organic fibre content
- Coverage: Approx. 0.7 L/m² per coat; two coats for optimal results
- Drying Time: Typically 24 hours (depending on conditions)
- Application Temperature: +5 °C to +35 °C
- Service Temperature: –10 °C to +85 °C
- Shelf Life: Up to 24 months unopened
Application Instructions
- Ensure the surface is sound, dry, and free from rust, dust, and contaminants
- Prime porous or dusty surfaces with Bostik Penetration Primer
- Stir well before use. Apply with a brush at 0.7 L/m² per coat, in at least two coats at right angles
- Allow each coat to dry fully before recoating
- For reinforcement, embed a fibre mesh between coats if required
- Clean tools with white spirit immediately after use
Safety & Storage
- Store in a cool, dry place between +5 °C and +35 °C
- Keep upright and tightly sealed when not in use
- Wear protective gloves, clothing, and eye protection during use
- Refer to the product SDS for full handling and first aid information
Bostik All Weather Brush is the go-to solution for reliable bituminous roof protection where traditional emulsions are unsuitable. Its instant waterproofing action and robust finish make it ideal for professional roofing repair and protection year-round.




