Xlnuroof can clean your old moss covered roof tiles treat them with an fungicide wash.. .All roofs are primed and resealed before applying two top coats of your choosen colour of a PTFE enhanced roof coating .Applied by an approved Nutech Applicator.For more information visit our website at www.xlnuroof.com. A cheaper more cost effective roof renewal soloution No payment until 100% satisfied 12 year manufactures gaurantee A choice of colours Extend the life of your roof by 30 years Waterproof your existing roof tiles