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Coroline bitumen sheet is a tough yet light weight roofing material. It is available in a choice of colours including Black, Green, Red and Brown. It is guaranteed waterproof for 15 years.. Choice of colours: Black, Green, Red and Brown. Complete installation accessories. Lightweight yet resilient. Easy to saw, nail and install. Durable and hardwearing. 15 year warranty. Installation guide. Size - 2000mm x 950mm. Width - 855mm. Thickness - 2.6mm. Weight - 5.6kg. Corrugation - 38mm Height, 95mm Width. Sheet Requirements. To calculate the number of sheets required to complete your roof, measure the width of the roof and divide this figure by the cover width -. ie: the roof is 3000mm wide, divide by 855mm = 3.5 sheets.. Round this figure up to the nearest full sheet - 4 sheets will be required.. Fixings Requirements. Divide the roof width by the fixing centres. Divide the roof length by the support centres and add 3.. Multiply these two values together.. = approximate number of fixings required.. Thermal Properties. U Value 4.4W2K. 15 Year Warranty. This product is covered by a 15-year waterproof guarantee. A replacement is provided free of charge if the product has failed to remain waterproof, in normal weather conditions within a 15 year period from the date of purchase.. Caroline MUST be fixed and maintained in accordance with the manufacturer's instructions for the warranty to remain valid. Re-erections or consequential damage costs are not included.