ABL (STEVENS) Resin & Glass
Unit 4, Millbuck Way,
Springvale Ind Est, Sandbach, Cheshire CW11 3HT, Tel/Fax: 01270 766685/529111
following sheets explain the procedures necessary to weatherproof a flat
roof using chopped strand mat and resin.
This procedure is
fast becoming the popular alternative to bitumen
& hot tar, is very much easier to apply and has a considerably longer
life, 30 years can usually be
The normal method is
to strip the old felt & tar surface and fix ¾” exterior plywood or
sterling board to the existing roof trusses (do not use any form of
chipboard). If removal of the original felt and tar is not possible then
the plywood may be formed over the existing roof, ensuring the new roof
has adequate falls in order for good drainage and to
alleviate the risk of
require only one layer of 1½oz/ sq foot Chopped strand mat + one layer of
glassfibre tissue + final flowcoat layer. Roofs bearing constant
pedestrian traffic require an extra sheathing of 1½oz chopped strand mat.
Corundum grit or glass grains can be applied with the final flowcoat layer to produce
an anti-slip surface.
The final flowcoat
layer is available ready pigmented white or clear which can be pigmented
to a colour of your choice; it also contains a stabiliser to guard against
the UV rays of the sun.
trims are available as follows in 3 metre lengths(cut
to 1 metre for transporting:
Section A: (A200)a right angle that allows rainwater to drop clear of the walls.
Section B: (B260)a right angle that incorporates a parapet to stop rainwater
Section C: (C100)simulated lead flashing, driven into brickwork and overlapping
Section D: (D260)angled at 135º from vertical wall to horizontal roof surface.
Sections C & D are
used when roof adjoins a brick wall.
Click pictures for larger view.
list of Trims available Here