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T-Roof Unum

T-Roof Unum has a polyester core coated with SBS bitumen and polypropylene felt. An adhesive edge of bitumen with protective foil, the foil is removed during jointing and installation. Mechanical fastening (roofing nails/staples) is required on the exposed edge and the fastening is always concealed.

Down to 6° (approx. 1:10) roof pitch
Lightweight
UV-protected for up to 2 months

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Application Area

The product is intended as an underlay on a solid wood base. Used for surface layers such as roofing felt (not weldable), shingles, profiled sheet metal (not seam-covered), and roof tiles (not flat). The surface layer dictates but the minimum slope is 6° (approx. 1:10) for exposed but not battened roofs. For battening and exposure without outer roof covering, at least 14° (1:4) is required! If battening is needed at a slope below 14° (1:4), it should be done directly in connection with the installation of the outer roof. For the minimum thickness of the base's wood panel, see table AMA Hus -21, HSD.1331/1. For battened outer roofs, at least 20 mm clapboard wood panel, and for non-battened, at least 23 mm.

Important!

When covering flat roof tiles, the supplier's guidelines for the underlay must be followed! For unprofiled roof tiles or in wind-exposed areas (near the coast), it is recommended to choose a more secure underlay such as T-Roof Epic.
The underlay should not be combined with surface layers that are hot air mounted (welded).
Carefully check the strength of the joint after assembly. Consider adverse weather conditions and ensure any temporary fixing of overlaps or protective covering until the permanent surface layer is installed!
The adhesive edge has aggressive adhesion under normal conditions! In cooler weather (<+10°C), there may sometimes be a need to improve the adhesion. Use a heat gun and gently heat the adhesive surfaces. Press the seam together carefully! In cool weather, rolls should be stored in a warm place for at least 1 day.
Be mindful to gently load the surface and immediately repair any damage with roofing felt adhesive Sealant K-36 or equivalent repair compound for bitumen waterproofing. For larger damage, use and attach/glue a strip from the underlay fabric.
Always cover with the surface layer (tiles, sheet metal, etc.) as soon as possible to avoid exposure to sunlight and adverse weather conditions. During construction, the underlay can be exposed to sunlight for up to a maximum of two months. In the operational stage, the underlay should be protected by the outer roof covering.
Rolls should be stored upright on a flat, dry surface and protected from sun and precipitation.
T-Roof Unum is diffusion-tight and when mounted on a wooden substrate, the space underneath should be ventilated according to standard practice.