Portobello Roofing have completed a training course and are licenced contractors for Alwitra so you can be confident in our services.


Alwitra is a single ply roofing membrane.

Mechanically attached, adhered or ballasted.

Sedum and green roof options

Colour options:  slate grey, light grey, white and pale green

30 year life expectancy

Standing seam profiles

Metal cappings and facias

Up to 20 year guarantee

Fully bitumen compatible and root resistant

Self extinguishing and complies with all regulations for fire resistance

Pollution resistant

Promotes good solar reflectivity

Does not trap moisture or blister

Install by heat welding or solvent welding


You can learn more about Alwitra at their website by following the link provided: http://alwitra.de/en/