a) Sweep the floor broom-clean. Make certain
all sharp objects are removed and nails in sub-flooring are firmly
driven flush. The sub-floor must be smooth, free of holes, cracks,
splinters or sharp projections.
b) If the wood sub-floor is uneven, place
one or two layers of 15 pound felt (dry) over it to provide a smooth
base for the Perma-Gard Sheeting (not
needed over smooth plywood or concrete w/40 mil. UPC requires a
15# Roofing Felt underlayment in all situations with 30 mil. WARNING:
DO NOT USE TAR PAPERS.
c) Line the shower floor or pan with
Perma-Gard sheeting brand plastic waterproofing membrane.
Turn the sheet up all side walls at least 6" above finished
(see Figure 1)
d) Fold corners (do not cut) against the
upstand by making a pig ear fold. Nail or staple 1/2 inch from the
upper edge to hold it in place.
(see Figure 2) Where metal stubs or
framing are used, duct tape may ne used to secure.
e) Where no backing is provided between
the studs, the slack may be taken up by pleating and stapling or
nailing to the studding 1/2" from the upper edge.
f) To adhere Perma-Gard
sheeting to vertical surfaces, coat the back of the sheet
and the surface to which it will be applied with adhesive. Allow
the adhesive to become dry to the touch (5-10 minutes) and press
the sheet into place.