Air Pressure:
Drawings:
retention of breaking strengh, %
retention of elongation at break, %
UT White
SABS 952-1985 Type E under tile membrane
Prevents windgusts lifting tiles
Prevents windblown rain/dust from
Specifications:
UT White is a polyethelene membrane that has been specially formulated for
use under roof tiles.
It is 0,25 mm in thickness and made in rolls of 1,5 x 30m. U.T. White is dimensionally
stable, light in weight, translucent, and weatherproof: handling and installation
are easy, and it seals around nails.
It is used for the prevention of draughts and dust penetration into the roof
spaces through tiles and slates, and prevents damage to ceilings, rotting
of timbers, and corrosion of plumbing.
Dust has also been known to penetrate between cornices and walls, initiating
or agravating allergies in susceptible people.
The membrane is also designed to prevent moisture from warm damp air reaching
and condensing on ceiling boards and other vulnerable points in the building
fabric. U.T. White also prevents strong wind from lifting and ripping off
roof tiles.
Most Building societies insist on the use of under tile membrane where the
roof pitch is less than 26 deg. or more than 45deg. and in exposed coastal
areas.
