Armourflex Ultimate UV Protection Oil is an award-winning, premium blend of natural oils, waxes, and resins, incorporating the latest UV stabilising technology to protect against weathering and UV damage that causes wood to swell, twist, and grey. The transparent/clear oil and wax formula imparts excellent water repellence to both softwood and hardwood, giving a microporous finish that is resistant to flaking, peeling, cracking and blistering. Ideal for all exterior wood types including doors, windows, and structural timbers. Contains film biocide. If used on unpreserved timber, use Barrettine Universal Preserver as a primer prior to applying Armourflex Ultimate UV Protection Oil.