For ready made extensions, we offer a specialised corner joint that is impermeable to air and driving rain.
Combine the extension with our insulating and sealing wedges and get a second water-bearing layer.
As opposed to hollow PVC profiles, frame extensions up to 1000 mm are from a single piece and therefore provide a seamless look.
Maximum length is 3000 mm – and longer upon request.
Depending on soundproofing requirements, we manufacture various versions.