Superior Walls has been installing foundations since 1981. Superior walls has been tested, and passed, for its fire performance in accordance with specific tests. The following information contains the results and findings of those tests on the Superior Walls Foundation System. Superior Walls continues to provide advanced solutions over outdated and undesired building methods, as well as over the increasing number of newest foundation products. For comparison purposes, Contact the Manufacturer of another Foundation System/Product and ask for their products Fire and Foam Plastic Test results.
Fire Tests Superior Walls Applied to and Passed:
UBC 26-3 / ASTM E119-95a / UL 1715
Dow Styrofoam insulation may be left uncovered on foundation walls if
it is installed in the Superior Walls System. Superior Walls panels
consist of fiber-reinforced concrete face shell, Dow Styrofoam, and
concrete studs spaced at two feet on centers to interrupt lateral flame
spread. The Superior Walls System was successfully tested according to
UBC 26-3 “Room Fire Test Standard for Interior Foam Plastic Systems
(reference Omega Point Laboratories Fire Test Project #15524-99646).
This test is equivalent to UL 1715 that is mentioned in many codebooks
under “Alternate Approvals” for a 15-minute thermal barrier.
Superior Walls System also successfully met the requirements of ASTM
E119-95a “Fire Tests of Building Construction and Materials” for a 2
hour load-bearing party wall fire resistance rating with the addition of
two staggered layers of 5/8” thick Type ‘X’ gypsum wallboard (reference
Omega Point Laboratories Fire Test Project #15524-99645). This is
commonly used in town homes, or between an Integral garage and the
The Superior Walls Xi Systemdid not flame and did not smoke
during the test period. Therefore, the tested materials successfully
met the conditions of the test standard, UL 1715, Fire Test of Interior
Finish Material Third Edition (reference Guardian Fire Testing
Laboratories, INC. Report # GL-79703.5).
Foam Plastic Test (see 2006 IRC Section R314 & R315)
Surface Burning Characteristics (Tested according to ASTM E84)
The Code limits Flame Spread to a maximum of 75
The Code limits Smoke Development to a maximum of 450
Superior Walls Dow extruded polystyrene has:
Flame Spread = 5
Smoke-developed Index = 165
Superior Walls expanded polystyrene has:
Flame Spread = 20
Smoke-developed Index = 240
Thermal Barrier noted in IRC Section R314.4 is not required on Superior
Walls because all of our products have been successfully tested to the
ANSI/UL 1715 or UBC 26-3 Fire Test in accordance with Section R314.6.
Details on Exposed Dow Styrofoam
though the exposed DOW Styrofoam insulation passed the interior fire
test requirements, when converting this area to a bedroom, family room,
kitchen, etc., Superior Walls of America recommends covering the DOW Styrofoam insulation with a code acceptable fire barrier by using the attached Galvanized stud faces.