11 people bought this in 48 hours
Bostik Waterproofing Black Downpipes, gutters & roofs Bituminous mastic, 5L
Under 18 yearsProduct details
Product information
This waterproofing bituminous mastic is suitable for bedding pointing and sealing asphalt and felt roofs.
- Guarantee - Statutory
- Store in original, unopened packaging in cool, dry conditions within the temperature range +5°C to +35°C, out of direct sunlight and away from sources of heat and ignition. Protect from frost.
- See pack
- Instructions for use: See pack
Features and benefits
- For bedding, pointing, sealing & filling cracks
- Use on roof felt, asphalt, corrugated iron and metal guttering & downpipes
- Contains fibres for reinforcement
Health and safety
Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.
DetailsSpecifications
| Brand | Bostik |
|---|---|
| Application conditions | Dry |
| Colour | Black |
| Container type | Tin |
| Coverage | 2.5m² |
| Drying time | 1 day |
| Location | Exterior |
| Minimum touch dry time | 24h |
| Model name/number | 30618101 |
| Pack quantity | 1 |
| Paintable | Not paintable |
| Product weight | 7800g |
| Solvent-free | Solvented |
| Substance | Bitumen |
| VOC emissions class in indoor air | No VOC level recorded |
| VOC level | Very high |
| Volume | 5000ml |
| Product code | 5021523154037 |
Safety Information
Manufacturer / EU responsible person
Reviews
4.88 / 5(9 reviews)Little briky - 5 / 5 - 21/04/2025
Fill craks nice and easy
Put on my roof esey to use dun the job on my roof works great
GMK - 5 / 5 - 29/03/2025
excellent product
I bought this product about a month ago . the assistants I had from your staff was excellent and new the product. I am pleased to say I have used it since and used it as the assistant told me too. It worked a treat and has saved from having a costly new shed roof covering. Well done Team BQ
Mouxe1 - 5 / 5 - 15/03/2025
Bitumen
Great service when collected does what it says on the tin
RooferGirl - 5 / 5 - 25/10/2024
Excellent Product
Good product we used it over our ridge tiles just for extra protection and it is easy to apply although your brush needs to be disposed of after use as it gets very clogged and stiff.
ici76 - 5 / 5 - 23/09/2024
Good product
I am very happy with this product. Has very good waterproofing
Dav29 - 5 / 5 - 18/09/2024
This product is great
My son is patching up garage roof, he said it is very good quality.
Warblernics - 5 / 5 - 25/08/2024
Thick and sticky
We used this to fill and seal the gap where roofing felt overlapped corrugated plastic on a shed roof. It is thick enough to hold its shape and sticky enough to glue and seal the join.
- 4 / 5 - 27/10/2023
Easy to use
I bought this in the Sidcup store at the person serving me Henry was so helpful and polite it makes me want to go there anytime I need diy
Alloca - 5 / 5 - 25/09/2017
excellent
We needed the bitumen to make a seal between the brick shed and base footings to stop any infiltration - it stuck to everything. Excellent