7
£301.60
  • × FloPlast Half Round Fascia Bracket, Brown – 112mmFloPlast Half Round Fascia Bracket, Brown – 112mm 1 × £1.99
  • × Timco Copper Slate Straps 1 × £11.29
  • × Code 4 Lead FlashingALM Code 4 Milled Lead - 600mm x 6m 1 × £206.74
  • × Cromar Vent 3 High Performance Breathable Membrane 1m x 50mCromar Vent 3 High Performance Breathable Membrane - 1m x 50m 1 × £49.99
  • × This image displays the front of the product and the colour inside, the product is Cromar Trowel Mastic - 2.5LCromar Bitumen Trowel Mastic - Black 2.5L 1 × £20.11
  • × Evo-Stik Gripfill Gap Filling AdhesiveEvo-Stik Gripfill Gap Filling Adhesive – 350ml 1 × £6.99
  • × This image displays the front of the product which is a Everbuild Stick2 All Purpose Clear Adhesive - 30mlEverbuild Stick2 All Purpose Clear Adhesive - 30ml 1 × £4.49

Subtotal: £301.60

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Bank Holiday Notice: Orders placed after 2:00 PM on Friday, August 23rd, will be shipped on Tuesday, August 27th.

BANK HOLIDAY HOURS WE WILL BE CLOSED Mon 5th May
Any Orders Placed After 2pm on Friday 2nd will Be Dispatched Tuesday 6th May
7
£301.60
  • × FloPlast Half Round Fascia Bracket, Brown – 112mmFloPlast Half Round Fascia Bracket, Brown – 112mm 1 × £1.99
  • × Timco Copper Slate Straps 1 × £11.29
  • × Code 4 Lead FlashingALM Code 4 Milled Lead - 600mm x 6m 1 × £206.74
  • × Cromar Vent 3 High Performance Breathable Membrane 1m x 50mCromar Vent 3 High Performance Breathable Membrane - 1m x 50m 1 × £49.99
  • × This image displays the front of the product and the colour inside, the product is Cromar Trowel Mastic - 2.5LCromar Bitumen Trowel Mastic - Black 2.5L 1 × £20.11
  • × Evo-Stik Gripfill Gap Filling AdhesiveEvo-Stik Gripfill Gap Filling Adhesive – 350ml 1 × £6.99
  • × This image displays the front of the product which is a Everbuild Stick2 All Purpose Clear Adhesive - 30mlEverbuild Stick2 All Purpose Clear Adhesive - 30ml 1 × £4.49

Subtotal: £301.60

View basketCheckout

BANK HOLIDAY HOURS WE WILL BE CLOSED Mon 5th May
Any Orders Placed After 2pm on Friday 2nd will Be Dispatched Tuesday 6th May
FREE Next Working Day
Delivery over £10*

Trowel Mastic

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Frequently Asked Questions (3)

Bitumen trowel mastic is a black, heavily filled bituminous compound reinforced with fibres. In spite of the product's surface membrane, it remains soft below to allow moderate movement.
Trowel mastic is made for perimeter pointing around wood and metal window and door frames which aid in waterproofing your home.
To apply it, use a trowel or a troweling knife. The surface should be pointed to a smooth finish immediately after application.

Trowel Mastic

Trowel mastic is made for perimeter pointing around wood and metal window and door frames. Trowel mastic comes in various sizes including 3kg, 6kg, 1l, 2.5l and 5 litre — depending on the product and the brand.

What is Bitumen Trowel Mastic?

Bitumen trowel mastic is a black, heavily filled bituminous compound reinforced with fibres. In spite of the product’s surface membrane, it remains soft below to allow moderate movement. Can be used as a sealant or a filler for mastic asphalt, roofing felt, corrugated iron, metal gutters, and downpipes.

Applying Trowel Mastic

Before using Trowel Mastic, make sure that all surfaces are be clean, dry, and free from dirt, dust, grease, and other contamination. To apply it, use a trowel or a troweling knife. The surface should be pointed to a smooth finish immediately after application. Surface drying occurs within 7 days, followed by gradual drying of the cross-section. After use, flatten the surface of the mastic and replace the polythene disc, ensuring the container is properly sealed.

After using the trowel, make sure that you clean tools and equipment immediately after use with white spirit. Hardened material can only be removed by mechanical means. Do not use solvents to remove from hands/skin – use soap and water with the aid of Wonder Wipes.