

Eagle Bitumen Trowel Mastic, a heavily bodied bituminous mastic for filling joints, cracks and splits in roofing and building materials such as roofing felt, asphalt, concrete, asbestos cement and metallic guttering and drainpipes.
Use Eagle Bitumen Trowel Mastic to fill joints, cracks and splits in roofing and building materials. The heavily bodied bituminous mastic adheres to roofing felt, asphalt, concrete, asbestos cement and metallic guttering and drainpipes, resistant to water penetration immediately after application and is ideally suited for maintenance and remedial work.
Ensure surfaces are clean, dry and free from oil, grease dirt and organic growth such as moss and lichen, removing using Fungicidal Wash.
Bolt heads on roof sheets should be wire brushed to remove rust before being sealed with Bitumen Trowel Mastic.
Porous surfaces should be primed with Bitumen Primer in order to seal the surface and allowed to dry thoroughly.
Tools can be lubricated with white spirit or paraffin to aid application.
Apply Bitumen 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.
The typical coverage rate for a 2mm thickness of material is 2m²/litre.
Drying times depend on weather conditions and film thickness. Heavy applications will result in extended drying times.
All tools should be cleaned immediately after use with white spirit. Hardened material can be removed by soaking in white spirit.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
![]() | Question:
Can trowel on bitumen mastic be used on tarmac? Kind regards Dave |
Answer from Rawlins’ Technical Team:
No, this product is designed for use on roofs. For repair to tarmac we would recommend Rust-Oleum 5410 Asphalt Repair. | |
Eagle Bitumen Trowel Mastic is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT