• Fills joints, cracks and splits in roofing felt, asphalt, concrete, asbestos cement and metallic guttering & drainpipes
• Resistant to water penetration immediately after application

Application:

• Ensure that the surface is clean, dry and free from oil, grease, dirt and organic growth
• Organic growth such as moss and lichen can be removed using Fungicidal Wash
• Bolt heads on roof sheets should be wired brushed to remove rust before being sealed with Trowel Mastic
• Porous surfaces should be primed with Bituminous Primer in order to seal the surface and allowed to dry thoroughly
• In order to assist application, tools can be lubricated with white spirit or paraffin
• Apply Trowel Mastic by trowel or putty knife, forcing material into cracks and joints and smoothing out on either side
• Cracks or joints of more than 3mm should be reinforced with glass fibre scrim and covered with a second application of mastic
• Storage Conditions/Shelf Life: After use replace the lid to ensure an airtight seal
• Shelf life is indefinite if container is kept sealed and is stored in a dry area at temperatures between 8 degrees C and 25 degrees C
• Cleaning Tools: Clean with White Spirit.