A wood window’s “cladding” is the material applied to the exterior of the window frame to improve its ability to resist corrosion and rot, and to provide a low maintenance exterior. Aluminum, vinyl, and fiberglass are all used as cladding, and each offers pros and cons that we are happy to discuss with you. As an alternative to cladding, JELD-WEN offers pine wood windows and doors treated with their unique AuraLast process. AuraLast penetrates the interior of the wood and provides superior resistance to decay, water saturation, and termites. It also acts as a wood conditioner, so stain applies much more evenly.