An oil-based general purpose mastic.
An oil-based mastic, suitable for perimeter sealing of timber frames and sealing of preformed concrete panels, e.g. for garages.
Not recommended for high movement joints or expansion joints.
Resistant to dilute alkalis and acids. Should not cause staining on many common building materials, but may stain porous materials such as marble, slate and other natural and reconstituted stones.
Flash point: 65°C.
Good UV resistance but may undergo slight yellowing.
Can be painted, but excessive movement will cause the paint to crack. Bituminous paints should not be used.
Correctly applied, the sealant should not require maintenance, and has an anticipated life in excess of 10 years.
Health and safety:
Avoid prolonged skin contact. Use of this product should be recorded in the project Health and Safety Plan.
+5°C to +50°C.
Skins after approximately 14 days depending on atmospheric conditions.
A combined joint filler/ bond breaker, such as closed cell foam polyethylene rod, should always be used to ensure that the sealant adheres only to the joint faces and not to the back. Bond breaker tape should be used where the joint has been packed out with fibre-board.
Friable or brittle surfaces will need priming with Arbo Primer 925.
H42/661 Sealant joints
L10/75 Sealant joints
L10/810 Sealant joints
L20/80 Sealant joints
L20/820 Sealant joints
Filler: Closed cell foam polyethylene rod
Filler: Fibre-board with bond breaker tape
Primer: Arbo Primer 925
Available in five standard colours.