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A clean and dry substrate is essential to
proper installation of PermaCrete on any
surface. This includes determining if the
substrate is subject to hydrostatic pressure,
which is water pressure up through the substrate
that causes delamination; or, efflorescence,
which causes discoloration or whitening from
leaching of soluble salts via water through the
substrate.
A procedure that can seal the surface and usually
eliminate either one of these problems prior to the
application of PermaCrete is to "paint" the pre-cleaned
substrate with a two-part epoxy primer (such as
PermaPrime E-coat), and then embed or broadcast
coarse sand onto the wet epoxy to leave a rough
surface for proper bonding of the Matrix Mix.
If the primer procedure has not been performed
prior to a PermaCrete application, and either of
the previously-mentioned problems exists, the
following steps may be taken to alleviate the
effects.
- Hydrostatic Pressure - Determine the source of
water intrusion into the slab (usually from underneath)
and divert most, if not all, of the water away from
the slab. Some form of a modified French drain
system along the side of the slab may suffice.
NOTE: The procedures for testing for excessive moisture
in a slab can be found on page 13 of the Detailed Installation
Procedures in the Dealer Manual.
- Efflorescence - Mix a weak solution of muriatic
acid (1 cup acid to 5 gallons of water) and clean the
white film contaminants off the PermaSeal surface. Be
careful not to harm or fade the sealer surface from the
use of muriatic acid; an initial, small test area is advisable.
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