Bostik Flashband Primer S.V. is a solvent borne bitumen solution designed to prepare porous or dusty surfaces before application of Bostik Flashband, especially in damp or cold weather. It primes and seals brickwork, cement renderings, roof tiles, concrete, mineralised felt, timber, metal, rainwater pipes, gutters and corrugated sheeting.

It’s fast drying, easy application makes it ideal for cold, damp conditions.

Solution designed to prepare porous or dusty surfaces before applying Bostik Flashband
Bostik Flashband Primer S.V. is a solvent borne bitumen solution designed to prepare porous or dusty surfaces before applying Bostik Flashband flashing tape, especially in damp or cold weather. It is fast drying and easy to apply, making it ideal for cold, wet conditions.

Suitable materials
Ideal for priming and sealing brickwork, cement renderings, roof tiles, concrete, mineralised felt, timber, metal, rainwater pipes, gutters and corrugated sheeting.

1. Bostik Flashband Primer S.V. for Roofs is a solvent borne bitumen solution, for priming/sealing brickwork, cement renderings, roof tiles, concrete, mineralised felt, timber, metal, rainwater pipes, gutters and corrugated sheeting.
2. It is also ideal to use prior to the application of other bitumen products and particularly where there are porous or dusty surfaces.
3. Use Bostik Flashband Primer S.V. for Roofs before applying Bostik Self Adhesive Flashing Tape to porous or dusty surfaces in damp or cold weather.
4. Form : Low viscosity liquid
5. Specific Gravity : 0.9 approx.
6. Composition : Solution of bitumen solvent
7. Colour : Black
8. Pack Size : 1 Litre

 Uses

• Bostik Flashband Primer S.V. for Roofs is a solvent borne bitumen solution, for priming/sealing brickwork, cement renderings, roof tiles, concrete, mineralised felt, timber, metal, rainwater pipes, gutters and corrugated sheeting
• Ideal to use prior to the application of other bitumen products and particularly where there are porous or dusty surfaces.
• Use for Roofs before applying Bostik Self Adhesive Flashing Tape to porous or dusty surfaces in damp or cold weather

Performance

• Quicky dry, cold weather formula
• Improves grab and adhesion
• Porous, rough, dusty or damp surfaces
• PERFORMANCE DATA :
• Specific Gravity : 0.9 approx.
• Application Temperature : +5 degree C to +35 degree C
• Service Temperature : -10 degree C to +70 degree C
• Coverage : 7 - 9m2 per litre, depending on porosity of surface
• Solvent for Cleaning Up : White Spirit

Preparation 

• Ensure the roof surface is structurally sound, clean, dry and free from surface contaminants such as grease, oil, rust and dirt.
• Remove any organic growth i.e. moss or lichen with Bostik Fungicidal Wash.

Application

• Apply with a soft bristle brush and allow to dry before over coating with Bostik Flashband or other bitumen products.
• Where possible we recommend using disposable brushes for the application

Cleaning

• Clean tools and equipment immediately after use with white spirit.
• Dried product is difficult to remove.
• Use proprietary hand cleaners for splashes on skin. Do not use solvents.

Coverage

• 7–9 m² per litre, depending on the porosity of the surface.