HomeMy WebLinkAbout20250847 231 Lake Ave Exterior Modifications - Roof NOD
Page 1 of 1
Tamie Ehinger, Chair
Rob DuBoff, Vice Chair
Chris Bennett
Leslie DiCarlo
Jeff Gritsavage
Geoff Wood
Karen Cavotta
Allison Dockum, Alternate
Christina Abele, Alternate
CITY OF SARATOGA SPRINGS
D ESIGN R EVIEW B OARD
❖
City Hall - 474 Broadway
Saratoga Springs, New York 12866
Tel: 518-587-3550 x.2517
www.saratoga-springs.org
NOTICE OF DECISION
In the matter of the application
#20250847
231 Lake Ave. Exterior Modifications
231 Lake Ave.
Saratoga Springs, New York 12866
involving Architectural review of roof replacement within the Institutional Education (INST-ED) District, tax parcel #
166.-4-34, within the City of Saratoga Springs.
In accordance with 6 NYCRR Part 617, the Design Review Board classifies this request as a SEQR:
Type II action – exempt from further SEQR review
And, in accordance with the objectives, standards and guidelines contained in the Unified Development Ordinance
Article 240-13.9 Architectural Review Applicability and Approval Standards, the Design Review Board issues the
following decision on October 15, 2025:
Approve the application as shown on the attached plans
Note: this approval shall expire 18 months from the issuance date unless any necessary building permit has been
issued and actual work begun.
Record of vote:
motion to approve made by: T. Ehinger, seconded by: C Bennett: passed 7-0
As a result of this decision, the applicant:
may proceed with the proposed project as approved
Please contact the Building Department to verify permit requirements.
Chair Received by Accounts
cc: Building Department
Accounts Dept.
Applicant/Agent
St Clement's Church
231 Lake Ave
Saratoga Springs, NY
Prepared for:
KC Entities Roofing & Siding
77 Ushers Rd
Mechanicville, New York 12118
GAF Design Services Project # PD-00056284
TABLE OF CONTENTS
Letters……………………………………………………………………………………………
Who is GAF Letter
Contractor Certification Letter
System Certification Letter
Section I
Specs………………………………………………………………………………….…….……
Cut Spec
Assembly Rendering
Section II
Technical Data Sheets………………………………………………………………………..
EnergyGuard™ Polyiso Roof Insulation
EverGuard® TPO 60 mil Membrane
EverGuard® TPO Accessories
EverGuard® TPO Adhesives, Primers and Sealants
EverGuard® TPO Quick Spray Adhesive LV50
Drill-Tec™ #12 Fasteners
Drill-Tec™ #14 Fasteners
Drill-Tec™ Insulation Plates
Drill-Tec™ Membrane Seam Plates
Section III
Safety Data Sheets…………………………………………………………………………….
EnergyGuard™ Polyiso Roof Insulation
EverGuard® TPO and Accessories
EverGuard® TPO Adhesives, Primers and Sealants
EverGuard® TPO Quick Spray Adhesive LV50
Drill-Tec™ Fasteners & Termination Bars
Drill-Tec™ Plates
Section IV
Warranty Sample………………………………………………………………………………
EverGuard® Diamond Pledge™ NDL Roof Guarantee
Section V
is a GAF GoldElite™ Commercial Contractor
Based on their consistent commitment to excellence and passion
for quality, GAF Commercial is pleased to recognize this
company as a GAF GoldElite™ Commercial Roofing Contractor.
They are eligible to offer the following enhanced GAF Commercial
Roofing Warranties and Guarantees for qualified projects:
Diamond Pledge™ NDL Roof Guarantee
System Pledge™ Roof Guarantee
Integrated System Limited Warranty
Alma Garnett
SVP, Commercial Roofing Sales
Pete Vollmar
SVP, Sales Operations
GAF ID:
Contractors enrolled in GAF certification programs are not employees or agents of GAF, and
GAF does not control or otherwise supervise these independent businesses. For more
information, view the Contractor Terms of Use, available at gaf.com.
1127693
2025
KC Entities Roofing & Siding
KC Entities Roofing &Siding
77 Ushers Rd
Mechanicville,New York,12118
12/10/2024
GAF ID:1127693
Re:GAF GoldElite™Commercial Contractor
Dear valued customer,
On behalf of GAF Commercial,we are pleased to confirm that KC Entities Roofing &Siding
is a GAF GoldElite™Commercial Contractor for 2025.
KC Entities Roofing &Siding qualified to become a GAF GoldElite™Contractor based on
their commitment to quality workmanship and customer service in commercial roofing.As
a GAF GoldElite™Commercial Contractor,KC Entities Roofing &Siding is able to offer
enhanced GAF warranties and guarantees including the Integrated System Limited
Warranty,the System Pledge™Roof Guarantee for qualified projects,and our premier
guarantee,the GAF Diamond Pledge™NDL Roof Guarantee.
GAF prides itself on partnering with knowledgeable and reputable roofing businesses that
share our commitment to delivering you the very best quality and service.
Sincerely,
Alma Garnett
SVP,Commercial Roofing Sales
Pete Vollmar
SVP,Sales Operations
Contractors enrolled in GAF certification programs are not employees or agents of GAF,and GAF does not control or otherwise supervise
these independent businesses.For more information,view the Contractor Terms of Use ,available at gaf.com.
Design Services
Design Services | 1 Campus Drive, Parsippany, NJ 07054 | Toll Free 877.423.7663 | gaf.com
May 9, 2025
KC Entities Roofing & Siding
77 Ushers Rd
Mechanicville, New York 12118
Subject: System Certification
Project: St Clement's Church
231 Lake Ave
Saratoga Springs, NY
Project Identifier: PD-00056284
Quote Number: QUO-16169-6FEKE1 – 1
To Whom It May Concern:
Please allow this letter to confirm that the contractor listed above is a GAF GoldElite Roofing Contractor for Single-ply
Roofing Systems and is eligible to obtain the guarantee listed below.
The GAF roofing specification as listed below is eligible to obtain a 20 year EverGuard® Diamond Pledge™ NDL Roof
Guarantee provided all current GAF application requirements are followed and guarantee procedures are met.
TMARI60 - 15/32" Plywood Deck /BUR
A moisture survey is strongly recommended, and in some circumstances, required to identify all wet areas.
Take test cuts to verify existing roof construction and condition.
Remove any loose gravel, dirt and debris from the existing surface.
Inspect existing insulation and remove and replace any materials that are damaged or contain moisture.
Remove all existing flashing materials.
Existing materials and any unforeseen issues are excluded from the GAF Guarantee.
The above listed roofing system is based on GAF guarantee requirements and is not intended to modify, negate, or
alter any requirements specified by the design professional , local building codes, or others.
If you have any further questions, please contact us at 877-423-7663 (Option 4, Option 3). Thank you for choosing
GAF.
Sincerely,
Traci Hicks
Traci Hicks
Regional Lead, Design Services
EnergyGuard™ Polyiso Insulation: Mechanically fasten the 3.0" EnergyGuard™ Polyiso Insulation to the
structural decking using Drill-Tec™ #12 Fastener and Drill-Tec™ 3" Standard Steel Plate, as follows:
Field: 5 fasteners per 4' x 8' board
Perimeter: 5 fasteners per 4' x 8' board
Corner: 5 fasteners per 4' x 8' board
EverGuard® TPO: Install EverGuard® TPO 60 mil using Drill-Tec™ #14 Fastener fastened with Drill-Tec™ 2 3/8
in. Barbed XHD Plate, fastened 12” o.c. within the 6” wide laps, spaced 114" o.c., and sealed with a 1.5” heat
weld. Half sheets are required at the perimeter, please refer to the table in the current specification manu al or
applicable version of ASCE for proper half sheet calculations and requirements.
For decks less than 3/4", fastener spacing is based on a minimum 400 lbf fastener pull out value. Building must
be enclosed and attachment rates listed above are not applicable for regions prone to “high-winds”, such as
Florida’s HVHZ counties, or Special Wind Regions as designated in ASCE's Basic Wind Speed Maps. For
buildings exceeding these specifics, contact GAF Design Services.
QUO-16169-6FEKE1 – 1
5/9/2025
Page 1 of 1
designservices@gaf.com Design Services 877-423-7663 (Option 4, Option 3)
St Clement's Church
231 Lake Ave
Saratoga Springs, NY
SPECIFICATION: TMARI60
COMPONENT TYPE REQUIRED ATTACHMENT RATE OF APPLICATION
DECK Plywood 15/32" Per Code N/A
EXISTING
SUBSTRATE
Existing BUR Prepare existing substrate as defined below
INSULATION 1
EnergyGuard™ Polyiso Insulation, 20 psi
ASTM C1289 Type II, Class 1, Grade 2
Size: 3.0", 4' x 8' LTTR: 17.4
1 layer
Fastened with:
Drill-Tec™ #12 Fastener
Drill-Tec™ 3" Standard Steel
Plate
Preliminary attachment:
Field: 5 Fasteners per 4' x 8' board
Perimeter: 5 Fasteners per 4' x 8' board
Corner: 5 Fasteners per 4' x 8' board
SINGLE PLY
MEMBRANE
EverGuard® TPO 60 mil White
ASTM D6878
Size: 10ft SRI: 94
1 ply
Fastened with:
Drill-Tec™ #14 Fastener
Drill-Tec™ 2 3/8 in. Barbed
XHD Plate
10' sheets fastened 12” o.c. in the 6” wide laps and sealed with
a 1.5” heat weld. Half sheets are required at the perimeter,
please refer to the table in the current specification manual or
applicable version of ASCE for proper half sheet calculations
and requirements. For decks less than 3/4", fastener spacing is
based on a minimum 400 lbf fastener pull out value. Building
must be enclosed and attachment rates listed above are not
applicable for regions prone to “high-winds”, such as Florida’s
HVHZ counties, or Special Wind Regions as designated in
ASCE's Basic Wind Speed Maps. For buildings exceeding these
specifics, contact GAF Design Services.
FLASHING
MEMBRANE
EverGuard® TPO 60 mil White
ASTM D6878
SRI: 94
1 ply
EverGuard® TPO Quick
Spray Adhesive LV50
Applied at a total rate of 10 squares (1,000 sq. ft.) per canister
equally to both the substrate and the underside of the
membrane. Membrane shall be run up and over the wall.
GUARANTEE
EverGuard® Diamond Pledge™ NDL Roof
Guarantee
20 year Guarantee fee applicable
Requirements above are subject to change. Always review the appropriate Application & Specification Manual to confirm that the requirements provided above are current, and
to obtain additional information that is important for a successful installation. This Cut Spec specification shall not waive, supersede or alter the requirements and
recommendations found in the most current Application & Specification Manual(s), printed technical bulletins or specific correspondence drafted for this project by Field Services,
Design Services, or Technical Services Manager. Application & Specification Manuals and specimen copies of guarantee/warranty documents are available at www.gaf.com.
Note: Your Field Services or Technical Services Managers are the only employees who can approve any deviation from GAF's published specification manual(s).
Each roof has unique requirements. This specification is a representation of products and their installation. To properly assess specific roofing needs, code compliance, system
configurations, and warranty eligibility, contact Design Services. The above listed roofing system is based on GAF guarantee requirements and is not intended to modify, negate
or alter any requirements specified by the design professional or others. Fastener pullout testing should be performed to ensure acceptable attachment into substrate. Adhesion
testing is required prior to guarantee registration to ensure foam adhesive will bond to a given substrate. Any wet or damaged existing decking must be removed and replaced
prior to re-roofing.
This system shall be installed by a GAF GoldElite™ Commercial Contractor.
All GAF and EverGuard® accessories shall be used where applicable.
Prepare substrate in accordance with GAF requirements, including but not limited to, removal and replacement of wet or damaged materials/insulation, and removal of existing
flashing materials. Sweep and remove all loose gravel and clean debris from roof surface. Re-secure any existing insulation as required. Any existing single ply membrane must
be cut into 10' x 10' sections. Moisture survey is recommended and in some circumstances required. If new roofing is to be adhered to any coated surface, it must be power
washed to remove loose and delaminating materials. Every effort must be made to remove existing coatings as part of the cleaning process and silicone based coatings MUST be
removed completely. Adhesion failures due to existing coatings are not covered by the GAF Guarantee, so it is important to test adhesion prior to proceeding with installation of
new materials. Existing materials are excluded from the GAF Guarantee.
0HPEUDQH
0HPEUDQH WWDFKPHQW
RYHU RDUG
RYHU RDUG WWDFKPHQW
1HZ QVXODWLRQ
1HZ QVXODWLRQ WWDFKPHQW
LVWLQJ 6XEVWUDWH
HFN 7\SH
RQVWUXFWLRQ 7\SH
HVLJQ 6HUYLFHV 2SW 2SW GHVLJQVHUYLFHV#JDI FRP
UDZLQJ QRW WR VFDOH 7KH LPDJHV VKRZQ DUH IRU LOOXVWUDWLRQ SXUSRVHV RQO\DQG PD\QRW EH DQ H[DFW UHSUHVHQWDWLRQ RI WKH SURGXFWV
63(&,),&$7,21
UDZLQJ QRW WR VFDOH 7KH LPDJHV VKRZQ DUH IRU LOOXVWUDWLRQ SXUSRVHV RQO\DQG PD\QRW EH DQ H[DFW UHSUHVHQWDWLRQ RI WKH SURGXFWVUDZLQJQRWWRVFDOH7KHLPDJHVVKRZQDUHIRULOOXVWUDWLRQSXUSRVHVRQO\ DQG PD\ QRW EH DQ H[DFW UHSUHVHQWDWLRQ RI WKH SURGXFWV
EverGuard® TPO 60 mil Membrane
Drill-Tec™ #14 Fasteners & 2-3/8” Barbed XHD Plates
N/A
EnergyGuard™ Polyiso Insulation
N/A
Plywood Deck - 15/32"
Recover
Drill-Tec™ #12 Fasteners & 3” Standard Steel Plates
St Clement's Church
BUR
EverGuard® TPO 60 mil Membrane, ASTM D6878
Fastened with Drill-Tec™ Fasteners & Plates
New Insulation:
EnergyGuard™ Polyiso
Insulation, ASTM C1289
Drill-Tec™ Fasteners
Plates
Existing Substrate:
BUR
over Existing Insulation
Deck Type: Plywood Deck - 15/32"
T60RMA
SP
EC
IM
EN
GAF
1 CAMPUS DRIVE
PARSIPPANY, NJ 07054
Visit gaf.com
EverGuard® Diamond Pledge™
NDL Roof Guarantee
2024 GAF • COMTS700-1224
OWNER OF BUILDING
NAME OF BUILDING
ADDRESS OF BUILDING
AREA OF ROOF (SQUARES)
APPLIED BY
GUARANTEE NUMBER
PERIOD OF COVERAGE
DATE OF COMPLETION
GUARANTEE EXPIRATION DATE
ROOF SPECIFICATION
By: _________________________________________________________
Authorized Signature
THE GUARANTEE/SOLE AND EXCLUSIVE REMEDY
GAF Warranty Company LLC ("GAF") guarantees to you, the owner of the building described above, that GAF will provide “Edge To Edge” protection by repairing leaks through the
GAF roofing membrane, liquid-applied membrane or coating, base flashing, high-wall waterproofing flashing, insulation, expansion joint covers, preflashed accessories, and metal
flashings used by the contractor of record that were designed and installed in accordance with an appropriate ES-1 certified edge detail (the “GAF Roofing Materials”) resulting from a
manufacturing defect, ordinary wear and tear, or workmanship in applying the GAF Roofing Materials. There is no dollar limit on covered repairs. Leaks caused by any non-GAF materials,
such as the roof deck or non-GAF insulation, are not covered.
GUARANTEE PERIOD
This guarantee ends on the expiration date listed above.
OWNER RESPONSIBILITIES
Notification of Leaks
In the event of a leak through the GAF Roofing Materials, you MUST make sure that GAF is notified directly about the leak, in writing, within 30 days either online at
leakreporting.gaf.com, by email at guaranteeleak@gaf.com, or by postal mail to GAF Warranty Claims Department, 1 Campus Drive, Parsippany, NJ 07054, or GAF will
have no responsibility for making repairs. NOTE: The roofing contractor is NOT an agent of GAF; notice to the roofing contractor is NOT notice to GAF.
By notifying GAF, you authorize GAF to investigate the cause of the leak. If the investigation reveals that the leak is not covered by this guarantee, you agree to pay an investigation cost
of $500. This guarantee will be cancelled if you fail to pay this cost within 30 days of receipt of an invoice for it.
Preventative Maintenance and Repairs
A. You must perform regular inspections and maintenance and keep records of this work.
B. To keep this guarantee in effect, you must repair any conditions in the building structure or roofing system that are not covered by this guarantee but that GAF concludes may be
threatening the integrity of the GAF Roofing Materials. Any such repairs must be performed by a GAF-certified roofing contractor. Failure to make timely repairs may jeopardize
guarantee coverage.
C. You may make temporary repairs to minimize damage to the building or its contents in an emergency, at your sole expense. These repairs will not result in cancellation of the
guarantee as long as they are reasonable and customary and do not result in permanent damage to the GAF Roofing Materials.
D. Any equipment or material that impedes any inspection or repair must be removed at your expense so that GAF can perform inspections or repairs.
EXCLUSIONS FROM COVERAGE
e.g., items that are not “ordinary wear and tear” or are beyond the control of GAF)
This guarantee does NOT cover conditions other than leaks. This guarantee also does NOT cover leaks caused by any of the following:
1. Inadequate roof maintenance, that is, the failure to follow the Scheduled Maintenance
Checklists provided with this guarantee (extra copies available by calling Guarantee
Services at 1-877-GAF-ROOF) or the failure to repair owner responsibility items.
2. Unusual weather conditions or natural disasters including, but not limited to, winds
in excess of 55 miles per hour, hail, floods, hurricanes, lightning, tornados, and
earthquakes, unless specifically covered by an addendum to this guarantee.
3. Impact of foreign objects or physical damage caused by any intentional or negligent
acts, accidents, misuse, abuse, or the like.
4. Damage to the roof constructed of the GAF Roofing Materials due to:
a) movement, cracking, or other failure of the roof deck or building; (b) improper
installation or failure of any non-GAF insulation or materials; (c) condensation
or infiltration of moisture through or around the walls, copings, building
structure, or surrounding materials except where high-wall GAF waterproofing
flashings are installed; (d) chemical attack on the membrane, including, but
not limited to, exposure to grease or oil; (e) the failure of wood nailers to remain
attached to the structure; (f) moisture migration from the building interior or any
building component other than the GAF Roofing Materials; (g) use of materials that
are incompatible with the GAF Roofing Materials; or (h) architectural, engineering,
or design defects or flaws.
5. Traffic of any nature on the roof unless using GAF walkways applied in accordance with
GAF published application instructions.
6. Blisters in the GAF Roofing Materials that have not resulted in leaks.
7. Changes in the use of the building or any repairs, installation of any overburden,
modifications, or additions to the GAF Roofing Materials after the roof is completed,
unless prior written approval is obtained from GAF.
8. Exposure to sustained high-temperature conditions; however, for systems utilizing
EverGuard Extreme® TPO membrane, exposure in excess of 195°F.
No representative, employee, or agent of GAF, or any other person, has the authority to assume any additional or other liability or responsibility for GAF, unless it is in writing and
signed by an authorized GAF Field Services Manager or Director. GAF does not practice engineering or architecture. Neither the issuance of this guarantee, nor any review of the
roof constructed of the GAF Roofing Materials (or the plans for the roof), by GAF shall constitute any warranty of such plans, specifications or construction, or the suitability or code
compliance of the GAF Roofing Materials for any particular structure. NOTE: Any inspections made by GAF are limited to a surface inspection only, are for the sole benefit of GAF,
and do not constitute a waiver or extension of any of the terms and conditions of this guarantee.
This guarantee MAY BE SUSPENDED OR CANCELLED IF THE ROOF IS DAMAGED BY any cause listed above as AN EXCLUSION FROM COVERAGE that may affect the integrity or
watertightness of the roof.
TRANSFERABILITY
You may transfer or assign this guarantee to a subsequent owner of this building for the remaining term only if: 1) the request is in writing to GAF at the address listed below within 60
days after ownership transfer; 2) you make any repairs to the GAF Roofing Materials or other roofing or building components that are identified by GAF after an inspection as necessary
to preserve the integrity of the GAF Roofing Materials; and 3) you pay an assignment fee of $500. This guarantee is NOT otherwise transferable or assignable by contract or operation of
law, either directly or indirectly.
LIMITATION OF DAMAGES; MEDIATION; JURISDICTION; CHOICE OF LAW
THIS GUARANTEE IS EXPRESSLY IN LIEU OF ANY OTHER GUARANTEES OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, and of any other obligations or liability of GAF, whether any claim against it is based upon negligence, breach of warranty, or any other theory. In NO event shall
GAF be liable for any CONSEQUENTIAL OR INCIDENTAL DAMAGES of any kind, including, but not limited to, interior or exterior damages and/or mold growth.
The parties agree that, as a condition precedent to litigation, any controversy or claim relating to this guarantee shall be first submitted to mediation before a mutually acceptable
mediator unless GAF, at its sole option, elects to waive said requirement. In the event that mediation is unsuccessful, or is waived by GAF, the parties agree that neither one will
commence or prosecute any lawsuit or proceedings other than before the appropriate state or federal court in the State of New Jersey. This guarantee shall be governed by the laws of
the State of New Jersey, without regard to principles of conflicts of laws. Each party irrevocably consents to the jurisdiction and venue of the above identified courts.
NOTE: GAF shall have no obligation under this guarantee unless and until all bills for installation and supplies have been paid in full to the roofing contractor and materials suppliers,
and the guarantee charge has been paid to GAF.
Flat Polyiso with GRF Facers
We protect what matters most™
Description:
EnergyGuard™ Polyiso Insulation
made of glass fiber reinforced
cellulosic facers (GRF) bonded to a
core of polyisocyanurate foam.
Features and Benefits:
n Versatile — approved component
in single ply, BUR and modified
bitumen systems, with a variety
of attachment methods:
mechanically attached, fully
adhered, loose laid and ballasted
n Approved for direct application
to steel decks
n High insulation value — polyiso
insulation has the highest R-value
per inch compared to any other
type of non-polyiso insulation of
equivalent thickness
n Because of its light weight, this
material is easy to handle on the
jobsite and installs quickly. Easy
cutting in the field provides the
installer with simplified fabricating
on the roof deck
n Excellent dimensional stability,
high moisture resistance and low
water permeability
Panel Characteristics:
n Available in a variety of thicknesses
from 1.0" (25.4 mm) to 4.6" (116 mm)
to best suit your specifications
n Available in 4' x 4' (1.22 m x 1.22 m)
and 4' x 8' (1.22 m x 2.44 m) boards
n Flute Fill and other special sizes are
available upon request
n Other EnergyGuard™ products
available – tapered, CGF facer and
non-halogenated. See individual
data sheets for more information
Codes & Compliance:
n Meets the requirements of
ASTM C1289 Type II, Class 1,
Grade 2 (20 psi) and also
available in Grade 3 (25 psi)
n FM Approved - refer to RoofNav.com
for approved assemblies
n Classified by UL in accordance with
ANSI/UL 1256, 790 and 263. Refer to
UL Product iQ for specific assemblies
n UL Evaluation Report UL ER1306-03
n Miami-Dade County Product
Control Approved
n State of Florida Approved
n Meets the requirements of CAN/ULC
704.1, Type 2, Class 3 or Type 3, Class 3†
n UL (Canada) Evaluation Report
ULC ER 1306†
n For additional information,
contact GAF at 1-800-766-3411 or
designservices@gaf.com
GAF manufacturing locations in UT and PA.
EnergyGuard™ Polyiso
Insulation Thermal Values:
Size*R-Value**Max Flute
Span (in)
1.0" (25.4 mm)5.7 2 5/8" (66.7 mm)
1.2" (30.5 mm) 6.8 2 5/8" (66.7 mm)
1.5" (38.1 mm)8.6 4 3/8" (111 mm)
1.75" (44.5 mm) 10.0 4 3/8" (111 mm)
2.0" (51 mm)11.4 4 3/8" (111 mm)
2.2" (59 mm)12.6 4 3/8" (111 mm)
2.3" (58 mm) 13.2 4 3/8" (111 mm)
2.5" (64 mm)14.4 4 3/8" (111 mm)
2.6" (66 mm)15.0 4 3/8" (111 mm)
2.8" (71 mm)16.2 4 3/8" (111 mm)
3.0" (76 mm)17.4 4 3/8" (111 mm)
3.2" (81 mm)18.6 4 3/8" (111 mm)
3.5" (89 mm)20.5 4 3/8" (111 mm)
3.7" (94 mm) 21.7 4 3/8" (111 mm)
4.0" (102 mm)23.6 4 3/8" (111 mm)
4.3" (109 mm) 25.4 4 3/8" (111 mm)
4.5" (114 mm)26.6 4 3/8" (111 mm)
4.6" (117 mm)27.1 4 3/8" (111 mm)
Other thicknesses available upon request.
Long Term Thermal Resistance Values provide a
15-year time weighted average in accordance
with CAN/ULC 770.
For optimal roof performance and to prevent
thermal bridging GAF recommends installing two
layers of Polyiso with staggered joints.
Visit gaf.com