Ubiflex Extreme is a high quality waterproof flashing material which has been developed for quick and easy installation and to withstand harsh weather conditions keeping its superb product benefits and installation features. Ubiflex Extreme can be used for most flashing applications where lead is traditionally used. Ubiflex is made of silicone and reinforced with an aluminium mesh.Please note this product is black in colour on one side and grey in colour on the other - both colours can be used as the exposed surface depending on your requirement. Properties Length: 5m. Width: 300mm. Thickness: 2.5mm. Weight: 5.7kg. Colour: black one side grey on the other (can be laid either way up). UV resistance: excellent. Fire rating: Class A (BRE tested). Recommended fixing methodsBrickwork: Chased into brickwork and use Ubiflex clips. On tiles: Extreme Fix to be used behind the leading edge and on all overlaps. Other: Nailed or screwed against subconstruction (on sheltered spots). Recommended tools Use undamaged bossing tools, no metal or rubber hammers. ColoursGrey / Black - the colours are reversible. Both colours can be used as the exposed surface. Wind uplift resistance Ubiflex Extreme was tested at the BRE with Extreme Fix and withstood wind speeds of 100 mph. Compatibility Ubiflex Extreme does not react to aluminum, copper and zinc and has superior resistance compared to other flashing materials. However, if Ubiflex Extreme is likely to come in contact with aggressive chemicals during work or maintenace, first test on a piece of material before proceeding.