SBS elastomer bitumen underlay
UltraBase is intended for use as underlay sheet for bitumen roofing shingles. The minimum installation temperature is +10°C. When installing roofing the adhesive edges should be heated with a hot air gun to ensure good adhesion.
UltraBase can be installed either parallel to the ridge (horizontal installation)or crosswise in relation to the ridge line (vertical installation). On steep roofs (pitch > 1:3) we recommend vertical installation. The roofing nails used for fixing shall penetrate the board decking of the roof.
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