Sika Black Jack 903 Bitumen Trowel Mastic
Sika Black Jack 903 Bitumen Trowel Mastic - Black / 1L is backordered and will ship as soon as it is back in stock.
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Customer Services
Customer Services
Got a query? Call 0330 055 8210
We're open from 8am to 5pm, Monday to Thursday, and 8am to 4:30pm on Friday.
Delivery and Shipping
Delivery and Shipping
Delivery is £12.50 + VAT to UK Mainland. Orders over £100.00 + VAT qualify for free delivery, except for certain products—these will be clearly shown at checkout.
Orders placed by 3pm (stock permitting) are dispatched the same working day on a next working day service (not guaranteed).
Some areas, like Northern Scotland, may take 2–3 working days.
Northern Ireland, Channel Islands and Isle of Man at extra cost – contact us for a quote
We're open:
Mon–Thurs: 8am–5pm
Friday: 8am–4:30pm
Call us: 0330 055 8210
Sika Black Jack 903 Bitumen Trowel Mastic
Sika Black Jack 903 Bitumen Trowel Mastic – heavily-filled, fibre reinforced, trowel applied bitumen
Sika® Black Jack®-903 Bitumen Trowel Mastic is a trowel-applied, black, heavily-filled bituminous compound with added fibres for reinforcement. The product forms a surface skin, but the mass below remains soft to allow for moderate movement. Suitable for sealing and filling holes in mastic asphalt, roofing felt, corrugated iron, metal guttering and downpipes.
Key benefits
- Fast drying
- Fibre-reinforced
- Suitable for use with all bituminous surface coatings
- Remains flexible for long periods after application
Typical applications
Mainly used for:
- Waterproofing, stopping, bedding, bonding and sealing
- Adheres to/fills holes in: mastic asphalt, roofing felt, corrugated iron, cast iron, fibre cement, slates, lead, copper, zinc, concrete and timber
Technical information
| Property | Value |
|---|---|
| Colour | Black |
| Pack sizes | 1L, 2.5L, 5L |
| Shelf life | 24 months |
Available sizes and packs
| Colour | Size | Sold as | Min. order | Code |
|---|---|---|---|---|
| Black | 1L | Each | 12 | 852672 |
| Black | 2.5L | Each | 1 | 852673 |
| Black | 5L | Each | 1 | 852674 |
1L is sold in full boxes of 12 – please order in multiples of 12. Other sizes are sold singly. Price shown is per item.
Health and safety
Signal word: Danger (H372, H372, H336, H304, H411, H226). Read the Safety Data Sheet before use.
Download the Sika Black Jack 903 Bitumen Trowel Mastic technical data sheet (PDF)
Download the Sika Black Jack 903 Bitumen Trowel Mastic safety data sheet (PDF)
Payment & Security
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