HomeMy WebLinkAboutCODE COMPLIANCE RESEARCH REVISIONt L11Ci8 6ou*
LDRC Deer. Ridge Consulting, Inc.
Code
Subject: SES Foam 0.5 lb Spray
Spray -Applied Polyuret
Supplement to ESR-337
• Alternative Assel
• Recognized Max
Date: April 17, 2013
Research Report
Foam Insulation System
505 Deer Ridge Lane
Ararat, VA 24053
Office: 276-755-9162
Fax 866-441-1054
www.deer-ridge-consulting.com
using TPRZ F10E Coating
Thickness behind Prescriptive Thermal Barrier
Materials: SES Foam 0.5 lb Spray
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Test Standards: 1. ASTM E 84 Testlfor Surface Burning Characteristics of Building Materials
2. NFPA 286 Standard Methods of Fire Tests for Evaluating Contribution of
Wall and Ceiling Interior Finish to Room Fire Growth
Purpose and Scope:
Since the issuance of ESR-3375 by ICC Evaluation Service, two situations have occurred with affect
the interpretation of that report. Namely:
SES Foam has conducted additional testing of the SES Foam 0.5 lb Spray (also identified
under the trademark "Sucrasead with the intumescent coating TPRZ F10E for use as an
alternate assembly to the use of a. thermal barrier; and
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2. Revisions to AC 377 (Acceptance Criteria for Spray -Applied Foam Plastic Insulation)
promulgated in November 2012� have changed the requirements for the recognition of
maximum thickness limitations when spray -applied foam plastic insulation is covered with a
prescriptive thermal barrier.
The intent ofthis Supplement to ESR-3375 is to provide guidance on the interpretation of that report
in view of the above changes.
Summary:
1. Based on the test data submitted and the referenc
by IBC Section 2603 and/or IRC Section R316 n
• The thickness of SES Foam 0.5 lb Spray d
ceilings, and
• The SES Foam 0.5 lb Spray is coated with
of 80 ftZ/gal) of TPRZ F10E intumescent
Fide COPY
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Deer Ridge Consulting, Inc.
Page 2 of 4
2. Based on AC 377 (November 2012) Section 3.2.2.3, and the ASTM E84 testing summarized
in ESR-3375, the installed thickness of SES Foam 0.5 lb Spray is not limited when separated
from the interior by a prescriptive thermal barrier (i.e., 1/2-inch [minimum] gypsum
wallboard).
Discussion:
Alternative Assembly: In IBC Section 2603.10 (Special approval) and IRC Section R316.6
(Specific approval), the building code permits alternate assemblies to the use of the required
thermal barrier when tested in accordance with specific tests. One such test is NFPA 286
(Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior
Finish to Room Fire Growth) when used in combination with the acceptance criteria of IBC
Section 803.1.2.1 or IRC Section R302.9.4. (NFPA 286 does not provide its own acceptance
criteria, hence this is specifically defined within the building codes.)
SES Foam 0.5 lb Spray was tested in accordance with NFPA 286 with results reported in
QAI Laboratories Test Report No. TJ0934, March 12, 2013 wherein the spray foam was
coated with the intumescent coating TPW F10E. The test result successfully passed the
acceptance criteria as defined in thIl IBC and IRC.
Therefore, the thermal barrier as required in IBC Section 2603 and/or IRC Section 316 may
be omitted provided the following limitations are observed:
• The maximum thickness SES Foam 0.5 lb Spray in wall and ceiling assemblies is
limited to 11.5 inches.
• The SES Foam 0.5 lb Spray is coated with 14 mils minimum dry film thickness
(application rate of 80 ft2 per gallon) of TPW F10E intumescent coating.
2. Maximum thickness: The maximum thickness that can be tested in accordance with ASTM
E 84 is four (4) inches. For thicknesses greater than four inches, the IBC (Section 2603.3,
Exception 4) and the IRC (R316.3�; Exception) provide for testing greater thicknesses in
accordance with the Special Approval and Specific Approval sections, respectively.
Traditionally, small room corner tests (such as NFPA 286) were employed to test thicknesses
greater than 4 inches, with the spray foam covered with a prescriptive thermal barrier (i.e.,
1/2-inch gypsum wallboard). However, after reviewing voluminous small room corner test
results, ICC-ES staff recommended and the ICC-ES board approved a modification to AC
377 wherein this test protocol maybe omitted. Under this provision, the maximum thickness
of the spray foam is not limited. The limitations placed on this provision reflect the data that
ICC-ES reviewed, namely:
• The spray foam product must have passed ASTM E84 testing at a thickness of four
(4) inches with maximum flame spread and smoke developed results of 25 and 450
respectively.
• The spray foamproduct must be separated from the building interior by a prescriptive
thermal barrier (1/2-inch [min.] gypsum wallboard is the only prescriptive thermal
barrier listed in the building code).
The provisions described above are within AC 377, Section 3.2.2.3 (November 2012).
505 Deer Ridge Lane • Ararat, VA 24053 • 276-755-9162 • www.deer-ridge-consulting.com
Deer Ridge Consulting, Inc. I Page 3 of 4
SES Foam 0.5 lb Spray has been tested in accordance with ASTM E84 with flame spread of
less than 25 and smoke developed of less than 450. Therefore, SES Foam 0.5 lb Spray falls
within the provisions of AC 377, Section 3.2.2.3 and may be installed at any thickness
provided it is covered with a prescriptive thermal barrier.
Conclusions:
SES Foam %2 lb Spray foam plastic insulation meets the requirements and intent of the IBC and IRC
as specified and as limited in the Summary section above.
Respectfully submitted,
Deer Ridge Consulting, Inc.
- -; � - �' --> 6- �
Roger V. Morrison, PE, RRC
President
505 Deer Ridge Lane • Ararat, VA 24053 • 276-755-9162 • www.deer-ridge-consulting.com
Deer Ridge Consulting, Inc. Page 4 of 4
Reference Documents:
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1. 2009 and 2012 International Building Code: Sections 803.1.2.1; 2603.
2. 2009 and 2012 International Residential Code: Sections R302.9.4; R316.
3. QAI Laboratories Test Report No. TJ0934, March 12, 2013 (NFPA 286).
4. Acceptance Criterial 377, Nove Iber 2012.
505 Deer Ridge Lane • Ararat, VA 240,53 • 276-755-9162 • www.deer-ridge-consulting.com
505 Deer Ridge Lane
Ararat, VA 24053
LDRC Deer Ridge Consulting, Inc. Office:
ce:276-441-1054
www.deer-ridge-consulting.com
Code Compliance Research Report
Subject: SES Foam 1/2 lb Spray
Spray -Applied Polyurethane Foam Insulation System
Date: July 29, 2011
Materials: SES Foam 1/2 lb Spray
Test Standards: 1. ASTM E 84 Test for Surface Burning Characteristics of Building
Materials
2. NFPA 2816 Standard Methods of Fire Tests for Evaluating
Contribution of Wall and Ceiling Interior Finish to Room Fire
Growth
3. NFPA 2861 as modified in AC 377, Appendix X
Summary:
2.
3.
Based on the test data submitted and the reference documents, SES Foam 1/2 lb Spray spray
polyurethane foam at a maximum (thickness of 11.5 inches in walls and/or ceilings, covered
with an approved or equivalent thermal barrier meets the requirements for use under 2006
IBC, 2006 IRC, 2009 IBC and 2009 IRC.
Based on the test data submitted and the reference documents, SES Foam %21b Spray spray
polyurethane foam at a maximum thickness of 11.5 inches may be applied to all geometric
construction planes in attics and crawl spaces without the prescribed protection from ignition
as required in 2009 IBC Section 2603.4.1.6 or 2009 IRC Sections R316.5.3 and R316.5.4
provided the following limitations are followed:
1) Entry to the attic or crawl spaces is only to service utilities and no storage is
permitted.
2) There are no interconnected attic or crawl space areas.
3) Air in the attic or crawl space is not circulated to other parts of the building.
4) Attic ventilation is provided when required by IBC Section 1203.2 or IRC Section
R806, except when air -impermeable insulation is permitted in unvented attics in
accordance with Section R806.4 of IRC, Under -floor (crawl space) ventilation is
provided when required by IBC Section 1203.3 or IRC Section R408.1, as
applicable.
5) Combustion air is provided in accordance with Sections 701 and 703 2006 IMC) and
Section 701 (2009 IMC).
Based on the test data submitted and the reference
polyurethane at a maximum thickness of 3.25 incl
thermal barrier when applied to sill plates and head
R316.5.11.
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Deer Ridge Consulting, Inc.
Labeling Requirements:
Page 2 of 4
A- and B-components for SES Foam %2 lb Spray insulation must be identified with the
manufacturer's name (SES Foam, LLC), address and telephone number; the name of the insulation
product SES Foam'/21b Spray); the flame spread and smoke developed indices; and the name of the
b third -party inspection agency.
Discussion:
Surface burning characteristics: The 2009 IBC and IRC (and earlier editions) require that
unless otherwise allowed, foam plastic must be tested in accordance with ASTM E 84 as
having a flame spread index of not more than 75 and a smoke -developed index of not more
than 450.
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Intertek Test Reports 100432887SAT-003A (June 28, 2011) and 100432887SAT-003B (June
28, 2011) report the following at �a thickness of four (4) inches in accordance with ASTM
E 84: 1
Flame Spread Index 5
Smoke Developed Index 450
Therefore, SES Foam %2 lb Spray insulation meets the surface burning characteristics as
stipulated in the IBC and IRC.
2. Maximum thickness: The maximum thickness that can be tested in accordance with ASTM
E 84 is four (4) inches. For thicknesses greater than four inches, the IBC (Section 2603.3,
Exception 4) and the IRC (R31613, Exception) provide for testing greater thicknesses in
accordance with the Special Apprioval and Specific Approval sections, respectively.
To this end, SES Foam '/2 lb Spray has been tested in accordance with NFPA 286 and
reported in Intertek Test Report No. 100432887SAT-001, June 28, 2011. The foam plastic
was tested covered with 1/2-inch; gypsum wall board (an approved thermal barrier) at a
thickness of 11.5 inches in the walls and ceiling. The test assembly met the pass/fail criteria
of IBC Section 803 (IRC has a l similar pass/fail criteria but the IBC criteria is more
stringent).
Therefore, SES Foam %2 lb Spray insulation meets the IBC Special Approval and the IRC
Specific Approval sections for application thicknesses up to 11.5 inches when covered with
an approved thermal barrier or an approved equivalent thermal barrier.
Use in attics and crawl spaces: Both the IBC and IRC provide exceptions to the thermal
barrier requirement for the use of foam plastic insulation in certain attics and crawl spaces.
Specifically, both model building codes provide for protecting the foam plastic from ignition
through the use of coverings described as prescriptive ignition barriers (2009 IBC Section
2603.4.1.6 or 2009 IRC Sections R316.5.3 and R316.5.4).
505 Deer Ridge Lane • Ararat, VA 24053 • 276-755-9162 • www.deer-ridge-consulting.com
Deer Ridge Consulting, Inc.
Page 3 of 4
Omitting the prescriptive ignition barriers is permitted under both model building codes
under the IBC Section 2603.9 Special Approval and the IRC Section R316.6 Specific
Approval. However, neither the IBC or the IRC provides a specific test method for the
approval of alternate materials or assemblies to prescriptive ignition barriers.
ICC Evaluation Service, in AC 377 Acceptance Criteria for Spray -Applied Foam Plastic
Insulation, provides a protocol in Appendix X based on NFPA 286 to qualify alternate
assemblies to those using prescriptive ignition barriers. ICC-ES accepts Appendix X test
results for the purposes of issuing Evaluation Reports. Furthermore, this protocol is widely
accepted within the building construction community as providing acceptable evidence
under IBC Special Approval an� IRC Specific Approval sections.
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Intertek Test Report No. 100432887SAT-002A, June 28, 2011 reports that SES Foam %21b
Spray passes the AC 377, Appendix X protocol at a maximum thickness of 11.5 inches in
the walls and ceiling. No prescriptive ignition barriers covered the foam plastic in this test;
neither were there any coatings or other coverings applied (i.e., the foam plastic was left
exposed for this test).
Therefore, SES Foam '/z lb Spray meets the Special Approval and Specific Approval sections
of the IBC and IRC respectively for use in attics and crawl spaces. The limitations as
stipulated in AC 377, Appendix X apply.
4. Sill plates and headers: Based on the surface burning characteristics referenced above, SES
Foam '/z lb Spray insulation meets)lthe requirements of IRC Section R316.5.11 for use on sill
plates and headers without being covered with a thermal barrier at a maximum thickness of
3.25 inches. I
Conclusions:
i
SES Foam '/z lb Spray foam plastic insulation meets the requirements and intent of the IBC and IRC
as specified and as limited in the Summary section above.
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Respectfully submitted,
Deer Ridge Consulting, Inc.
Roger V. Morrison, PE, RRC
President
Reference Documents:
2009 International Building Code: Sections 803.1.2.1; 2603.
2. 2009 International Residential Code: Sections R302.9.4; R316.
505 Deer Ridge Lane • Ararat, VA 24053 • 276-755-9162 • www.deer-ridge-consulting.com
Deer Ridge Consulting, Inc. Page 4 of 4
3. Intertek Test Reports No. 100432887SAT-003A (June 28, 2011) and 100432887SAT-003B
(June 28, 2011) (ASTM E 84)
4. Intertek Test Report No. 100432887SAT-001, June 28, 2011 (NFPA 286)
5. Intertek Test Report No. 100432887SAT-002A, June 28, 2011 (AC 377, Appx. X)
6. SES Foam %2 lb Spray Technical Data Sheet
7. Acceptance Criterial 377, Appendix X
505 Deer Ridge Lane • Ararat, VA 24053 • 276-755-9162 • www.deer-ridge-consulting.com