7. 719 Gildersleeve St. 2026-012304-ADMIN

Extracted text

City of Santa Fe
Administrative Approval
Land Use Department | Historic Preservation Division
THIS IS NOT A CONSTRUCTION PERMIT
DO NOT BEGIN WORK WITHOUT A PERMIT. SUBMIT THIS FORM WITH YOUR
CONSTRUCTION PERMIT APPLICATION AND RETAIN A COPY AT THE JOB
Date:
To: From:
Be advised that per §14-5.2 SFCC 1987 the work described below at the referenced address does NOT
require Historic Districts Review Board approval and is hereby staff-approved as described below. Please
allow the applicant to submit for a construction permit(s) for this work if required.
Project Address: 719 GILDERSLEEVE ST, Santa Fe, NM 87505
Building Permit Division
April 29, 2026
Case Number: 2026-012304--ADMIN
Anthony Maestas
Luis OrtizContact Name:
drluisortiz@gmail.comPhone Number: 505-718-9839 Email:
Approved Scope of Work: Re-roof structure as submitted, ( 1700 sq. ft. ). TPO TAN
Conditions of Approval: Roofing materials must not be publicly visible.
There shall be no publicly visible rooftop appurtenances, no roofing material shall be on the top of the
parapets and shall be flashed on interior of parapets.
Not approved to replace canales or skylights.
There shall be no changes to existing mechanical, line sets, or other rooftop appurtenances at this time.
No other work approved at this time.
PERMIT or PERMIT REVISIONFURTHER ACTIONS REQUIRED:
FINAL HISTORIC INSPECTION
Ver. 06 8/30//2019Page 1 of 1



GO Construction, LLC-“No job too big, No job too small, We can do it all.”
1102 8th Street
Las Vegas, NM 87701 (505) 718-9839
Historic Preservation Division
719 Gildersleeve Street, Santa Fe, NM 87505
PROPOSAL LETTER
To whom it may concern,
This letter is to formally express each itemized element of this reroof project (719 Gildersleeve
Street, Santa Fe, NM 87505). The total square footage of the project is 1,700 sq. ft. The
following will occur during the reroof project (note, but not limited to):
• Removal of all existing gravel from the roof (note: gravel will be repurposed and reused
for landscaping on other projects.)
• Clean, tear off, inspect, and remove the existing system down to the decking
• Inspect and replace any decking as needed
• Prepare decking and install Poly iso insulation
• Install Versico 60 mil TPO on roof (Tan by the customer/HPD)
• Install pipe boots on all penetrations
• Wrap Parapets with TPO and Seal all penetrations
• Coat all canales and flash all skylight curbs with TPO
• Install pipe boots and paint all pipe jacks to match TPO
• Install TPO-coated termination metal on all parapets
• Flash canales with non-reinforced detail membrane
• Seal all penetrations and flash all skylight curbs with TPO
• Remove and dispose of all trash and debris from the job site (this includes, but is not
limited to, waste containers and porta-potties).
Thank you for your attention to this matter and to our roofing business in New Mexico, which
always aims to offer our best price with the highest quality. If you have any questions, please do
not hesitate to contact us at 505-718-9839 or via email at drluisortiz@gmail.com. We appreciate
your support for our community, GO Construction, LLC, our hard-working employees, and our
efforts to enhance the facilities for generations to come.
Respectfully,
Luis Ortiz, Ph.D.
Owner, GO Construction, LLC
Phone: 505.718.9839 | 505.718.9835 Email: drluisortiz@gmail.com | Website: drluisortiz.com



Description
R-Tech FF (Fanfold) is a high-performance sheathing consisting
of a superior closed-cell, lightweight and resilient expanded
polystyrene (EPS) with advanced polymeric laminate facers. The
core of R-Tech is the same high-quality as our InsulRoof brand
insulations, and meets or exceeds the requirements of ASTM
C578, Standard Specification for Rigid, Cellular Polystyrene
Thermal Insulation. In addition, R-Tech has excellent dimensional
stability, compressive strength and water resistant properties.
Uses
R-Tech FF is ideal in recover applications, and is well-suited for
single-ply roof applications that employ mechanically fastened
or ballasted TPO, PVC, EPDM and CSPE membranes. Consult
local building codes and membrane manufacturers for system
requirements.
Advantages
ƒ Labor Savings. R-Tech FF comes in 200 ft2 bundles, and is
lightweight enough that the average roof mechanic can carry
an R-Tech bundle under each arm (a total of 4 squares).
Competing 4’ x 8’ recover products would require 13 sheets
to cover 4 squares, and weigh almost 5 times as much as
R-Tech FF.
ƒ User Friendly. The R-Tech manufacturing process ensures that
it will lay flat during installation, eliminating the thermoplastic
roof system seam-welding issues that are experienced with
other FF products.
ƒ Versatile. The unique polymeric laminate facers allow single-
ply membranes, including PVC, to be installed directly over
R-Tech without additional slip sheets or divorcement.
ƒ Cost-Effective. R-Tech is typically less expensive than other
recover products, requires fewer fasteners per square foot,
and is easier to handle.
ƒ Environmentally Friendly. It contains no formaldehyde or
HCFCs, may contain recycled material, and has a foam core
that is 100% recyclable.
ƒ Proven Performance. The same fundamental chemistry has
been in use since the mid-1950s, so the actual performance of
the product is well known.
ƒ Water-Resistant. R-Tech is hydrophobic (does not readily
absorb moisture) and does not promote the migration of
moisture into the insulation.
ƒ Code Approvals. R-Tech has numerous recover listings with
Underwriters Laboratories. Please refer to UL’s Roofing
Materials Directory or contact your Insulfoam representative
for additional information.
Sizes
R-Tech FF is available in nominal thicknesses of 3/8”, 1/2” and 3/4”
with the 4’ x 50’ FF (2 squares). Individual panel sizes within the
FF bundle are 2’ x 4’. R-Tech is also available in 4’ x 8’ units.
Installation Recommendations
ƒ One fastener is to be placed at each corner of the leading and
trailing edges, and thereafter at a rate of one fastener every 12
square feet placed on alternating sides of the sheet.
ƒ Fasteners are to be 6” from the board’s edge.
ƒ When used with dark colored membranes, R-Tech should be
installed with the silver or metallic side facing up.
Note: Some membrane manufacturers may require a higher
density of fasteners for their warranted systems. Consult the
membrane manufacturer for specific requirements.
Nationwide Manufacturing n Toll Free: (800) 248-5995 n www.Insulfoam.com
INSULATION ENGINEERED TO MAKE A DIFFERENCE.

Nationwide Manufacturing n Toll Free: (800) 248-5995 n www.Insulfoam.com
11013-05/16
INSULATION ENGINEERED TO MAKE A DIFFERENCE.
Typical Physical Poperties of R-Tech*
Property Type I Type VIII Type II Type IX Test Method
Compressive Strength
(psi, 10% deformation) 13 16 20 28 ASTM D1621
Flexural Strength (psi) 33 40 50 70 ASTM C203
Water Vapor Transmission
(perms) < 1.0 < 1.0 < 1.0 < 1.0 ASTM E96
Typical Physical Properties of InsulFoam (foam core)*
Property Type I Type VIII Type II Type IX Test Method
Nominal Density (pcf) 1.0 1.25 1.5 2.0 ASTM C303
C-Value (Conductance)
BTU/(hr•ft2•°F)
@ 25° F
(per inch) @ 40° F
@ 75° F
.23
.24
.26
.220
.235
.255
.21
.22
.24
.20
.21
.23
ASTM C518
or
ASTM C177
R-value (Thermal Resistance)
(hr•ft2•°F)/BTU
@ 25° F
(per inch) @ 40° F
@ 75° F
4.35
4.17
3.85
4.54
4.25
3.92
4.76
4.55
4.17
5.00
4.76
4.35
ASTM C518
or
ASTM C177
Compressive Strength
(psi, 10% deformation) 10 - 14 13 - 18 15 - 21 25 - 33 ASTM D1621
Flexural Strength (psi) 25 - 30 32 - 38 40 - 50 55 - 75 ASTM C203
Dimensional Stability
(maximum %) < 2% < 2% < 2% < 2% ASTM D2126
Water Vapor Transmission
(perms) 2.0 - 5.0 1.5 - 3.5 1.0 - 3.5 0.6 - 2.0 ASTM E96
Absorption (% vol.) < 4.0 < 3.0 < 3.0 < 2.0 ASTM C272
Capillarity none none none none –
Flame Spread < 20 < 20 < 20 < 20 UL 723
Smoke Developed 150 - 300 150 - 300 150 - 300 150 - 300 UL 723
*Properties are based on data provided by resin manufacturers, independent test agencies and Insulfoam.

Features and Benefits
• Living Building Challenge “Red List Free” – Declare Label
• VersiWeld TPO is available in 4-, and 6-ft (121.92 cm and 182.88 cm)
perimeter sheets and 8-, 10-, 12-, and 16-ft (243.84 cm, 304.80 cm,
365.76 cm, and 487.68 cm) VersiWeld field sheets*
• VersiWeld High Slope TPO is available in 5', 10', and 16'
(152.40 cm, 304.80 cm, and 487.68 cm) sheets
• HS formula opens assemblies for slopes greater than ½" over
combustible and non-combustible deck types where standard
TPO is restricted
• Outstanding puncture resistance and excellent fire resistant assemblies
• Environmentally friendly and stable formulation
• Excellent resistance to impact and low temperatures
• Excellent chemical resistance to acids, bases and restaurant
exhaust emissions
• UL 2218 Class 4 hail rating
• Manufactured with non-halogenated flame retardants
• Exceptional resistance to heat, solar UV, ozone and oxidation
• Manufactured using a hot-melt extrusion process for complete
scrim encapsulation
• Enhanced with the OctaGuard XT
weathering package
• Standard Colors:
• Special Colors:
* VersiWeld HS Special Color TPO membranes are available in 5'- and 10'-wide
sheets. Refer to Versico’s VersiWeld TPO Color Palette Sell Sheet for details.
VersiWeld 80-mil in special colors are limited to warranties up to 20 years.
VersiWeld®
TPO Reinforced Membrane
Overview
Versico’s VersiWeld TPO reinforced membrane is a premium, heat-weldable,
single-ply thermoplastic polyolefin (TPO) sheet designed for new roof
construction and re-roofing applications. VersiWeld High Slope (HS)
membrane is formulated with additional flame retardant for higher-slope fire
code approvals. VersiWeld Plus is 80 mils (2.03 mm) thick for significantly
higher strength and weatherability.
VersiWeld TPO membranes use advanced polymerization technology that
combines the flexibility of ethylene-propylene (EP) rubber with the heat
weldability of polypropylene. All VersiWeld TPO membranes include OctaGuard
XT™, an industry-leading, state-of-the-art weathering package. OctaGuard XT
technology enables VersiWeld TPO to withstand the extreme weatherability
testing that is intended to simulate exposure to severe climates.
Physical properties of the membrane are enhanced by a strong polyester
fabric that is encapsulated between the TPO-based top and bottom plies.
The combination of the fabric and TPO plies provides high breaking and
tearing strength, as well as excellent puncture resistance. The relatively
smooth surface of the membrane produces a total surface fusion weld that
results in a consistent, watertight, monolithic roof assembly. The membrane
is environmentally friendly and safe to install.
BUILDING VALUE
TECH N ICAL DATA BULL E TI N
White
Slate Gray
Gray
Med Bronze
Tan
Terra Cotta Patina Green Rock Brown

Sustainable Attributes
Versico Roofing Systems’ focus has always been innovation – Innovation to
solve problems, improve performance, reduce labor, and above all, improve
sustainability. Versico is committed to driving sustainable and efficient
processes in the design and manufacturing of our products.
• Up to 10% pre-consumer recycled content
• Fully recyclable when used in mechanically attached systems
• 3rd-party verified Environmental Product Declaration available
• NSF P151 certification for rainwater catchment**
VersiWeld TPO Reinforced Membrane
TECH N ICAL DATA BULL E TI N
• California Title 24 compliant***
• Free of Living Building Challenge red list chemicals
** White only, produced in Tooele, UT and Carlisle, PA
*** White and Tan only
Installation
VersiWeld TPO roofing systems are quick to install, as minimal labor and few
components are required. TPO systems are installed using an Automatic
Heat Welder, making sheet welding fast, clean, consistent, and easy to
learn, while reducing strain on the roofing technician.
Fully-Adhered – membrane is adhered to a suitable substrate utilizing an
appropriate bonding adhesive
Mechanically Attached – membrane is attached to the roof deck over a suitable
substrate utilizing plates and fasteners which are overlapped with membrane
Induction-Welded – membrane is attached over a suitable substrate via an
induction welding tool being placed over the membrane where a fastened
TPO induction welding plate is located to weld the two components together
REVIEW CURRENT VERSICO SPECIFICATIONS AND DETAILS FOR SPECIFIC
INSTALLATION REQUIREMENTS.
Precautions
• Sunglasses that filter out ultraviolet light are strongly recommended,
as tan and white surfaces are highly reflective. Roofing technicians
should dress appropriately and wear sunscreen.
• Surfaces may become slippery due to frost and ice buildup. Exercise
caution during cold conditions to prevent falls. Exercise caution when
walking on wet membrane. Membranes may be slippery when wet.
• Care must be exercised when working close to a roof edge when
the surrounding area is snow-covered, as the roof edge may not be
clearly visible.
• Use proper stacking procedures to ensure sufficient stability of the rolls.
• Store membrane in the original undisturbed plastic wrap in a cool,
shaded area and cover with light-colored, breathable, waterproof
tarpaulins. Membrane that has been exposed to the weather must be
prepared with Weathered Membrane Cleaner prior to hot-air welding.
• Take care not to stand or place heavy objects on the edge of folded-
over membrane, as this could cause a hard crease in the membrane.
• Maximum sustained temperature not to exceed 160°F (71°C)
for TPO membrane.
• Do not use razor blades or other sharp tools to cut the APEEL
Protective Film while it is still adhered to the TPO membrane as
damage to the underlying membrane may occur. Pull the protective
film away from the membrane prior to cutting.
BUILDING VALUE
Wider is Better
Versico’s 16-foot VersiWeld TPO
delivers a leap in productivity
on adhered and induction
welded roofs by cutting down
on the number of rolls needed
and dramatically reducing the
number of seams on the roof.
With fewer rolls to load, stage, and kick out, and fewer seams to weld,
contractors can save significant time on each project, moving on to
the next one sooner.
16-Foot TPO Benefits
• Fewer rolls to load and stage on a job saves crane time and
labor at the beginning of each project
• Fewer rolls to position, kick-out, and align during installation
saves labor
• Up to 60% fewer seams vs. 10-foot TPO
• Fewer seams to weld, probe, and inspect, saving considerable
time during installation
• Fewer T-joint patches to install on each roof
• Less waste and trash from packaging
• Less time spent on each project, allowing contractors to
complete more roofs and grow their business
• Available in High Slope formulation in white and gray colors

• Remove APEEL Protective Film by pulling towards the center of the
roof. Do not remove the film by pulling towards the roof edge.
• A static electric charge may develop when removing APEEL Protective
Film from the surface of the membrane sheet. To avoid the possibility
of ignition, lids must be closed on any flammable products and a fire
extinguisher should be readily available.
• Color membranes will ‘fade’ over time mainly due to the ultraviolet
portion of sunlight. Since most roof surfaces are exposed to variable
sunlight, some areas will be more susceptible to color changes
caused by UV fading. Warranties for color membranes do not cover
fading of colors.
Extreme Testing for Severe Climates
ASTM Standard D6878 is the material specification for Thermoplastic
Polyolefin-Based Sheet Roofing. It covers material property requirements for
TPO roof sheeting and includes initial and aged properties after heat and
xenon-arc exposure. As stated in the scope of the standard, “the tests and
property limits used to characterize the sheet are values intended to ensure
minimum quality for the intended purpose.” Versico’s goal is to produce TPO
that delivers maximum performance for the intended purpose of roofing
membranes. Maximum performance requires the membrane to far exceed
the requirements of ASTM D6878.
Heat Aging accelerates the oxidation rate that roughly doubles for each
18°F (10°C) increase in roof membrane temperature. Oxidation (reaction
with oxygen) is one of the primary chemical degradation mechanisms of
roofing materials.
Versico Testing – Heat Aging
ASTM Requirement VersiWeld Requirement
ASTM Test 240°F 32 weeks** >128 weeks
** Heat exposure comparable to 3,120 weeks (60 years) at 185°F for 8 hours/day.
• Test specimen is a 2" by 6" (50.8 mm by 152.4 mm) piece of
45-mil (1.14 mm) membrane unbacked, placed in circulating
hot-air oven.
• Criterion – no visible cracks after bending aged test specimen
around 3" (76.2 mm)-diameter mandrel.
Q-Trac testing combines accelerated weathering with real-world conditions
using an array of ten mirrors to reflect and concentrate full spectrum sunlight
onto membrane test specimens. The Q-Trac device automatically tracks the
VersiWeld TPO Reinforced Membrane
TECH N ICAL DATA BULL E TI N
sun’s path from morning to night. Also, it adjusts to compensate for seasonal
changes in the sun’s altitude. Eight years in Q-Trac testing is equal to 40 years
of real-world exposure. Versico requires its VersiWeld TPO membranes to pass
the equivalent of 40 years of exposure in the Q-Trac.
Versico Testing – Q-TRAC
ASTM D6878 Requirement VersiWeld Requirements
ASTM Test
N/A N/A Equivalent of 40 years
of exposure
Environmental Cycling subjects the membrane to repeated cycles of heat
aging, hot-water immersion, and xenon-arc exposure.
• ASTM requirement – none
• Versico Extreme test*:
- 10 days heat aging at 240°F (116°C) followed by
BUILDING VALUE
Optional APEEL™ Protective Film:
Shield Versico’s VersiWeld TPO
membrane from dirt and scuffs
during installation with APEEL
Protective Film. Durable and easy
to remove, APEEL eliminates the
need for rooftop cleaning upon
project completion.
• Ideal for re-roofing, re-cover, and new construction projects
• Simple and easy to remove
• Saves time and money when compared to pressure washing
• Protecting from dirt maintains maximum membrane reflectivity
and long-term performance
Installation
Simply order membrane with APEEL, install, and remove the film to
reveal a clean, new roof.
• APEEL Protective Film should be removed from within areas
that are to be heat-welded together. In areas that do not
require heat-welding, the APEEL Protective Film can be left in
place for up to 90 days without degrading due to its excellent
heat- and UV-resistance .
• When the installation of the entire TPO roofing system is
complete, remove and discard the APEEL Protective Film.

VersiWeld TPO Reinforced Membrane
TECH N ICAL DATA BULL E TI N
BUILDING VALUE
Radiative Properties for Cool Roof Rating
Council (CRRC) and LEED
Test Method White
TPO Tan TPO Gray TPO
CRRC – Initial
solar reflectance ASTM C1549 0.79 0.71 0.46
CRRC – Solar
reflectance
after 3 years
ASTM C1549
(uncleaned) 0.70 0.64 0.43
CRRC – Initial
thermal emittance ASTM C1371 0.90 0.86 0.89
CRRC – Thermal
emittance after
3 years
ASTM C1371
(uncleaned) 0.86 0.87 0.88
LEED – Thermal
emittance ASTM E408 0.9 0.86 0.85
SRI – Inital
(Solar Reflectance
Index)
ASTM E1980 99 86 52
SRI – 3 year aged
(Solar Reflectance
Index)
85 77 49
Radiative Properties (Initial)
for Special Colors
Reflectance Emittance SRI
Medium Bronze 0.28 0.86 29
Rock Brown 0.25 0.87 26
Slate Gray 0.38 0.87 42
Terra Cotta 0.25 0.86 25
Patina Green 0.25 0.88 25
Solar Reflectance Index (SRI) is calculated per ASTM E1980. The SRI is a measure of the
roof’s ability to reject solar heat, as shown by a small temperature rise. It is defined so that
a standard black (reflectance 0.05, emittance 0.90) is 0 and a standard white (reflectance
0.80, emittance 0.90) is 100. Materials with the highest SRI values are the coolest choices
for roofing. Due to the way SRI is defined, particularly hot materials can even take slightly
negative values and particularly cool materials can even exceed 100.
Green Building Information
Pre-Consumer Recycled Content 10%
Post-Consumer Recycled Content 0%
Solar Reflectance Index (SRI) White – 99
Tan – 86
Gray – 52
Global Warming Potential (GWP) TPO 45 mils 2.90E+00
TPO 60 mils 3.77E+00
TPO 80 mils 5.28E+00
Volatile Organic Compounds
(VOC) Content
N/A
Manufacturing Location(s) Senatobia, MS
Tooele, UT
Carlisle, PA
Corporate Sustainability Report
(CSR) Availability
Yes
Environmental Product Declaration
(EPD) Availability
- 5 days water immersion at 158°F (70°C) followed by
- 5,040 kJ/m² (2000 hours at 0.70 W/m² irradiance)
xenon-arc exposure
* Test specimen is 2.75" (69.85 mm by 140 mm) by 5.5" piece of membrane with
edges sealed.
* Criterion – after 3 complete cycles, test specimens shall remain flexible and not have any
cracking under 10x magnification while wrapped around a 3" (76.2 mm)-diameter mandrel.
Supplemental Approvals, Statements
and Characteristics:
1. VersiWeld TPO meets or exceeds the requirements of
ASTM D6878 Standard Specification for Thermoplastic Polyolefin-
Based Sheet Roofing.
2. VersiWeld TPO membranes conform to requirements of the US E.P.A.
Toxic Leachate Test (40 CFR part 136) performed by an independent
analytical laboratory.
3. VersiWeld TPO was tested for dynamic puncture resistance per ASTM
D5635-04 using the most recently modified impact head. 45-mil (1.14
mm) was watertight after an impact energy of 12.5 J (9.2 ft-lbf) and
60-mil (1.52 mm) was watertight after 22.5 J (16.6 ft-lbf). 80-mil (2.03
mm) Plus was watertight after an impact energy of 30.0 J (22.1 ft-lbf).
4. All FM approved assemblies have been tested to pass FM 4470 for
foot traffic resistance.

8 0 0 .9 9 2.76 6 3 • w w w.ve r s i c o.c o m
A S I N G L E S O U R C E F O R S I N G L E - P LY R O O F I N G
© 2026 Versico. Printed in U.S.A.
VE-2369 - “VersiWeld Reinforced TPO Technical Data Bulletin” - 02.17.26
Versico, VersiWeld, and the Versico logo are trademarks of Versico. APEEL and OctaGuard XT are registered trademarks
of Carlisle Construction Materials, LLC. LEED is a registered trademark of the U.S. Green Building Council.
VersiWeld TPO Reinforced Membrane
TECH N ICAL DATA BULL E TI N
Typical Properties and Characteristics
Physical Property ASTM D6878
Requirement
45-mil
(1.14 mm)
60-mil
(1.52 mm)
80-mil Plus
(2.03 mm)
Tolerance on Nominal Thickness, %
ASTM D751 test method +15, -10 ± 10 ± 10 ± 10
Thickness Over Scrim, in. (mm)
ASTM D7635 optical method,
average of 3 areas
0.015 min
(0.380)
0.018 typical
(0.457)
0.024 typical
(0.610)
0.034 typical
(0.864)
Breaking Strength, lbf (kN)
ASTM D751 grab
220 (976 N)
min
225 (1.0) min
320 (1.4) typical
250 (1.1) min
360 (1.6) typical
350 (1.6) min
425 (1.9) typical
Elongation Break of Reinforcement, %
ASTM D751 grab method 15 min 15 min
25 typical
15 min
25 typical
15 min
25 typical
Tearing Strength, lbf (N)
ASTM D751 proc. B 8 in. x 8 in. 55 (245) min 55 (245) min
130 (578) typical
55 (245) min
130 (578) typical
55 (245) min
130 (578) typical
Brittleness Point, °F (°C)
ASTM D2137 -40 (-40) max -40 (-40) max
-50 (-46) typical
-40 (-40) max
-50 (-46) typical
-40 (-40) max
-50 (-46) typical
Linear Dimensional Change, %
ASTM D1204, 6 hours at 158°F ± 1 max ± 1 max
-0.2 typical
± 1 max
-0.2 typical
± 1 max
-0.2 typical
Ozone Resistance, no cracks 7X
ASTM D1149, 100 pphm, 168 hrs PASS PASS PASS PASS
UV Exposure (Xenon Arc), no cracks
7X ASTM G155, min.
exposure 10,080 kJ/m2
(4,000 hrs – 0.70 W/m2)
PASS PASS PASS PASS
Water Absorption Resistance, mass %
ASTM D471 top surface only 166 hours at
158°F water
± 3.0 max ± 3.0 max
0.90 typical
± 3.0 max
0.90 typical
± 3.0 max
0.90 typical
Factory Seam Strength, lbf (N)
ASTM D751 grab method 66 (290) min 66 (290) min 66 (290) min 66 (290) min
Field Seam Strength, lbf/in (kN/m)
ASTM D1876 tested in peel No requirement 25 (4.4) min
50 (8.8) typical
25 (4.4) min
60 (10.5) typical
40 (7.0) min
70 (12.3) typical
Water Vapor Permeance, Perms
ASTM E96 proc. B No requirement 0.10 max
0.05 typical
0.10 max
0.05 typical
0.10 max
0.05 typical
Puncture Resistance, lbf (kN)
FTM 101C, method 2031
(see supplemental section)
No requirement 250 (1.1) min
325 (1.4) typical
300 (1.3) min
350 (1.6) typical
400 (1.8) min
450 (2.0) typical
Properties After Heat Aging
ASTM D573, 32 weeks @ 240°F or
8 weeks @ 275°F
No cracking when bent around
3" diameter mandrel
Weight Change, %
PASS
No cracking
± 1.5 max
PASS
No cracking
1.0 max
PASS
No cracking
1.0 max
PASS
No cracking
1.0 max
Typical Weights lb/ft² (kg/m²) 0.25 (1.22) 0.33 (1.61) 0.45 (2.20)
Typical properties and characteristics are based on samples tested and are not guaranteed for all samples of this product. This data and information is intended as a guide and does not
reflect the specification range for any particular property of this product.

VersiCore®
Polyiso
Overview
VersiCore is a rigid-roof insulation
panel composed of a closed-cell
polyisocyanurate foam core bonded on
each side to glass-reinforced felt (GRF). ReadyFlash® Technology is a standard
feature of VersiCore Polyiso that allows the contractor to manipulate flash-off
times by choosing which side of the insulation board to apply membrane
adhesives. ReadyFlash features a dark glass-reinforced felt (GRF) on one side of
the insulation board and a light glass-reinforced felt on the other.
• Increases surface temperature of the dark facer up to 25ºF above
ambient temperature and provides up to 30% faster adhesive flash-off.
• Decreases surface temperature of the light facer up to 5ºF below
ambient temperature.
Features and Benefits
• VersiCore polyiso insulation provides the highest R-value per inch of
commercially available insulation products
• Zero ozone-depleting components, HFC- and HCFC-free formulation
• Approved for direct application to steel decks
Panel Characteristics
• Available in 4' x 4' (1220 mm x 1220 mm) and 4' x 8' (1220 mm x
2440 mm) panels in thickness of 0.5" (13 mm) to 4.5" (115 mm)
• Available in 4' x 12' (1220 mm x 3660 mm) panels in the following
thickness: 1.5", 1.75", 2.0", 2.2", 2.5", 2.6", 3.0", 3.3", and 3.5"
Applications
• Single-Ply Roof Systems (Ballasted, Mechanically Attached,
Fully Adhered)
Sustainable Attributes
Versico Roofing Systems’ focus has always been innovation – Innovation to
solve problems, improve performance, reduce labor, and above all, improve
sustainability. Versico is committed to driving sustainable and efficient
processes in the design and manufacturing of our products.
• Zero ozone-depleting components, HFC- and HCFC-free formulation
• CDPH Compliant for maximum allowable concentrations of
target VOCs
• Up to 56.9% recycled content by weight
(36.6% post-consumer/20.3% pre-consumer)
• Contributes to LEED® and Green Globes certification requirements
• End-of-life jobsite disposal options available for re-use/re-purposing
• Versico Polyiso Roof Insulation and HD Cover Board EPDs available
• PIMA Quality MarkCM Certification Program participant for Long-Term
Thermal R-values (LTTR)
• Highest R-value per inch providing maximum energy savings and
CO2 emissions avoidance
Polyiso Eco Ready (Optional)
• 5% bio-content option available (for 2.0" and 2.6" thicknesses)
• Contributes to carbon reduction initiatives via mass balance
approach under ISCC PLUS compliance
Installation
Ballasted Single-Ply Systems
Each VersiCore panel is loosely laid on the roof deck. Butt edges and
stagger joints of adjacent panels. Install the roof membrane according to
Versico’s specifications.
Mechanically Attached Single-Ply Systems
VersiCore panels must be secured to the roof deck with fasteners and plates
(appropriate to the deck type). Butt edges and stagger joints of adjacent
panels. Install the roof membrane according to Versico’s specifications.
Fully Adhered Single-Ply Systems
VersiCore panels must be secured to the roof deck with fasteners and plates
(appropriate to deck type). Butt edges and stagger joints of adjacent panels.
Install the roof membrane according to Versico’s specifications.
VersiCore 4' x 8' and 4' x 12' panels can be secured to the roof deck with
Versico’s Flexible DASH™ Adhesive, either full coverage or bead spacing.
VersiCore 4' x 4' panels may be adhered to prepared concrete deck with a
full mopping of Type III or IV asphalt.
REVIEW CURRENT VERSICO SPECIFICATIONS AND DETAILS FOR SPECIFIC
INSTALLATION REQUIREMENTS.
BUILDING VALUE
TECH N ICAL DATA BULL E TI N

8 0 0 .9 9 2.76 6 3 • w w w.ve r s i c o.c o m
A S I N G L E S O U R C E F O R S I N G L E - P LY R O O F I N G
© 2025 Versico. Printed in U.S.A.
VE-8756 - “VersiCore Polyiso Technical Data Bulletin” - 10.27.25
US PATENT NUMBER: 10,662,652
Versico, VersiCore, DASH, and the Versico logo are trademarks of Versico. ReadyFlash is a trademark of
Carlisle Construction Materials, LLC. LEED is a registered trademark of the U.S. Green Building Council.
VersiCore Polyiso
TECH N ICAL DATA BULL E TI N
Foamed plastic as roof deck construction material with
resistance to an internal fire exposure only for use in
construction no.(s) 120 and 123. See UL Directory of
Products Certified for Canada and UL Roofing Materials
and Systems Directory. 99DL.
Typical Properties and Characteristics
Physical Property Test Method Value
Compressive Strength ASTM D1621 20 psi* minimum
(138 kPa, Grade 2)
Dimensional Stability ASTM D2126 2% linear change
(7 days)
Moisture Vapor Permeance ASTM E96 <1 perm
(57.5 ng/(Pa•s•m²))
Water Absorption C1763 <1% volume
Typical properties and characteristics are based on samples tested and are not guaranteed
for all samples of this product. This data and information is intended as a guide and does
not reflect the specification range for any particular property of this product.
*Also available in 25 psi minimum, Grade 3
VersiCore Polyiso Thermal Values
Thickness
(inches)
LTTR
R-value
Thickness
(inches)
LTTR
R-value
0.5 2.8 2.75 15.9
0.75 4.2 2.8 16.2
1 5.7 2.9 16.8
1.1 6.3 *3 17.4
1.2 6.8 3.1 18
1.25 7.1 3.2 18.6
1.3 7.4 3.25 18.9
1.4 8 *3.3 19.2
*1.5 8.6 3.4 19.9
1.6 9.1 *3.5 20.5
1.7 9.7 3.6 21.1
*1.75 10 3.7 21.7
1.8 10.3 3.75 22
1.9 10.8 3.8 22.3
*2 11.4 3.9 23
2.1 12 4 23.6
*2.2 12.6 4.1 24.2
2.25 12.9 4.2 24.9
2.3 13.2 4.25 25.2
2.4 13.8 4.3 25.5
*2.5 14.4 4.4 26.1
*2.6 15 4.5 26.8
2.7 15.6 – –
Flute Spanability is 2 5⁄8" for 1.4" or thickness or smaller. Flute Spanability is 4 3⁄8" for 1.5"
thickness or greater.
*4' x 12' offering is available in this thickness.
Codes and Compliances
• ASTM C1289, Type II, Class 1, Grade 2 (20 psi), Grade 3 (25 psi)
• International Building Code (IBC) Section 2603
• UL Standard 790, 263 and 1256: Component of Class A Roof
Systems (refer to UL Roof Materials’ system directory)
• FM® Standards 4450/4470: Class 1 approval for steel roof-deck
constructions (refer to FM RoofNavSM)
• California Code of Regulations, Title 24, Insulation Quality Standard
License #TI-1418
• Third-party certification with the PIMA QualityMarkCM for Long-Term
Thermal Resistance (LTTR) values
• CAN/ULC S704, Type 2, Class 3 (20 psi), Type 3, Class 3 (25 psi)
• Florida Building Code Approval
• CDPH compliant for maximum allowable concentrations of target VOCs
Precautions
Insulation must be protected from open flame and kept dry at all times.
Install only as much insulation as can be covered the same day by
completed roof-covering material. Protect installed product from excessive
foot traffic. Versico will not be responsible for specific building and roof
design by others, for deficiencies in construction or workmanship, for
dangerous conditions on the job site or for improper storage and handling.
Technical specifications shown in this literature are intended to be used
as general guidelines only and are subject to change without notice. Call
Versico for more specific details, or refer to PIMA Technical Bulletin No. 109:
Storage & Handling Recommendations for Polyiso Roof Insulation.