Another major affect of high quality producing on the longevity of uPVC doors could be the capability to withstand warping. Warping is a very common dilemma for uPVC doors which have not been manufactured with higher-good quality materials. Low quality uPVC doors are susceptible to warping over time as a result of versions in temperatures or dampness, which could cause them to lose their form and turn into hard to close up or fasten securely.