Prompted by numerous conversations at this weekends Home Build & Renovate Show at the NEC where clients rightly were asking how Internorm can offer a far longer warranty period than the competition. Most of our competitors claim to have a Timber Aluminium Composite product. That is not strictly true, they're products are essentially a timber window with an Aluminium Section cleated or screwed to the timber frame. The competition's construction is flawed and encourages condensation on the timber directly adjacent to the Aluminium. Internorm's cross section on the left shows the XPF foam protecting the softwood timber and improving the uF value of the frame which is why our overall uW Performance kills the competition.
30 Year Internorm warranty compared to 5-10 years from the competition, you can understand why!