Upstands
alwitra daylight systems
alwitra upstands are suitable for new build and refurbishment. The extruded polyvinyl chloride profiles with an impact-proof frame feature an innovative cellular system optimising the thermal insulation of the profile.
Without any additional measures alwitra upstands ensure excellent thermal insulation up to every corner:
- U-value: 1.0 W/m²K according to EN 12567-2
- white inner side, smooth or lightly textured PVC
- CE marking in connection with alwitra rooflights according to DIN EN 1873
EVALON® and EVALASTIC® collars for perfect and fast waterproofing
alwitra upstands are optionally available with factory-fitted EVALON® or EVALASTIC® collars. With this collar a tight and homogeneous flashing against the roofing membrane can be achieved far quicker than with manual flashing:
- completely pre-assembled at the factory
- full-size adhesive bond of the flashing collar on the upstand
- material thickness of the sealing layer: 1.5 mm
- available in any roofing membrane colour
- professional top fixing of the flashing sheet with a screw-fastened aluminium trim profile
- direct welding of the collar to the membrane; no additional roofing material (e. g. flashing sheet) required
- minimum installation time
- relatively low additional costs
Overview of important downloads
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