ProSet Systems Inc.
1355 Capital Circle
Lawrenceville, GA, 30043
When It Must Be Waterproof
Against a 36" Head of Water for 72 Hours
ProSet is constantly
being asked by General Contractors, Developers and
Architects to provide waterproof pipe
penetrations. Because of the massive use of sprinklers,
it appears that the water proofing of
floor and wall penetrations has become as important as
Besides the direct water
damage, concealed water leakage in walls and drop
ceilings is conducive to mold. Virtually everyone is
aware of the mold claims that are causing insurance
coverage to be prohibitively expensive or not available
at all. This is a very serious problem for the building
We have tested different
types of penetrations and explored the reasons why
apparently waterproof penetrations still leak. Our
findings, and the innovations we have developed in
response, are provided below.
For Drawings, Brochure or
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US Patent Pending
Water Guard Drawing
Alternatives for Water
ProSet provides penetrations
with multiple levels of water resistance and waterproofing.
The regular ProSet sleeves
that have been used for years can be made water tight.
However, many people find it difficult to install the
penetration joint so that it is waterproof. Human caulking
error during installation can lead to leakage through the
inside of the sleeve.
The other issue with the
waterproofing of penetrations is associated with the
expansion and contraction of rigid plastic water stops and
the concrete that surrounds them. The sleeve will expand and
contract, depending on the temperature at the time of the
pour and the internal temperature of the uncured concrete.
The concrete will always contract during the curing process.
The combination of these forces can cause cracking around
the water stop and the concrete. This leads to leakage on
the outside of the sleeve through the concrete floor.
We have performed waterproof
testing on many types of penetrations and none (prior to the
ProSet Water Guard) were 100% waterproof.
Surprisingly, testing on schedule 40 steel sleeves,
specified by most engineers, showed greater leakage than any
other type of penetration.
Water Guard "C"
ProSet’s Water Guard C will
provide a very high level of water resistance. The Extension
Coupling will allow additional sleeving to be solvent
cemented to the “C” Coupling so that it extends above any
expected emergency water levels. This eliminates the most
common human error: not properly caulking the pipe joint
passing through the sleeve. The photograph opposite shows a
Water Guard "C" Penetration with the sleeve extension
cemented into the sleeve coupling and the pass-through pipe
Testing shows that
approximately 85% of Water Guard “C” penetrations will not
leak, while the remainder will only leak minimally.
Water Guard "CR"
ProSet has developed the
new Water Guard “CR” penetration, which has been
successfully water tested with a 36” head of water for
72 hours with no leaks.
In addition to the sleeve extension, the
Water Guard “CR” has a large, flexible Elastomeric
stop ring around the middle of the sleeve
that adjusts to the expansion and contraction of the sleeve
and the contraction of the concrete. This prevents the
cracking that can occur with a rigid water stop.
ProSet’s new Water Guard
complies with OSHA requirements for concrete protective plug
caps that resist over two hundred pounds pressure and will
provide a safe floor for tradesmen.
Waterproof Penetrations for a Wide Variety of Pipes
Above are two Water Guard Penetrations cast in concrete. The
penetration on the left is for cast iron pipe and the one on
the right is for copper pressure pipe. In both cases, the
sleeve extension is 3 inches (shown above the finished
Depending on the anticipated height of anticipated emergency
water levels, this extension height could be increased or
decreased. The top of the extension coupling can be seen
flush with the concrete floor.
Exploded View of
Water Guard "CR"
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All rights reserved.