SKU: 98168726825

Atlas ACFoam-III Tapered Polyiso Roof Insulation, Grade-III 25 psi, 4 ft x 4 ft, 1-1/4 in to 1-1/2 in

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Description

Atlas ACFoam-III Tapered Polyiso Roof Insulation, Grade-III 25 psi, 4 ft x 4 ft, 1-1/4 in to 1-1/2 inAtlas Tapered Polyiso Roof Insulation, Grade III (25 psi) Closed cell polyisocyanurate roof insulation board with inorganic coated glass facers for tapered applications. Designed to promote positive drainage while delivering long term thermal resistance (LTTR) in commercial or residential roofing systems. Key Features: Tapered Design: Factory tapered panels help achieve positive roof drainage and reduce ponding water Durable Construction: Closed cell

Atlas Tapered Polyiso Roof Insulation, Grade-III (25 psi)

Closed-cell polyisocyanurate roof insulation board with inorganic coated glass facers for tapered applications. Designed to promote positive drainage while delivering long-term thermal resistance (LTTR) in commercial or residential roofing systems.

Key Features:

  • Tapered Design: Factory-tapered panels help achieve positive roof drainage and reduce ponding water
  • Durable Construction: Closed-cell polyiso core bonded to inorganic coated glass facers for strength and moisture resistance
  • High Compressive Strength: Grade-III 25 psi rating supports foot traffic and roof assemblies
  • Thermal Performance: Delivers reliable long-term thermal resistance (LTTR) to improve energy efficiency
  • Convenient Size: 4' x 4' panels; thickness ranges from 1-1/4" to 1-1/2" for smooth transitions

Specifications Table:

Specification Details
Product Type Tapered polyisocyanurate (polyiso) roof insulation
Brand Atlas
Model / Series ACFoam-III
Grade / Compressive Strength Grade-III, 25 psi
Panel Size 4' x 4' (1220 mm x 1220 mm)
Thickness Range 1-1/4" to 1-1/2"
Core Closed-cell polyiso foam
Facers Inorganic coated glass facers
Coverage 608 sq. ft. per unit
Unit of Measure PC
Applicable Standards / Approvals ASTM C1289; CAN/ULC-S704; CCMC No. 12423-L; UL Certified for Canada; UL 1256; UL 790 (ASTM E108); UL 263 (ASTM E119); UL 1897; FM 4450/4470 Approved; IBC Chapter 26 & NBC; California State; Miami-Dade County Approved; Florida Product Approved; Greenguard Certified; RCI Approved; NRCA Approved; AIA Approved; U.S. Green Building Council Member
Length 4' (1220 mm)
Width 4' (1220 mm)
Style Polyiso
Manufacturer Number TP2_25PSI_00
Product Number ATLT2G3

Frequently Asked Questions (FAQ):

Q: What is the compressive strength rating?
A: This Grade-III panel is rated at 25 psi, suitable for many commercial roof assemblies.

Q: What are the panel dimensions and thickness range?
A: Each panel is 4 ft x 4 ft with a thickness taper from 1-1/4 in to 1-1/2 in.

Q: Is this product compatible with common roofing systems?
A: Yes. It is widely approved and listed under standards such as ASTM C1289, UL, FM 4450/4470, and others—verify specific assembly requirements in the product data sheet.

Q: What facers does it use?
A: It features inorganic coated glass facers bonded to a closed-cell polyiso core.

Q: How much area does a unit cover?
A: 608 square feet per unit, per the product listing.

Sculpted Insulation for Sleek, High-Performance Rooflines

This tapered polyiso board shapes a roof with intention, guiding water elegantly while preserving the clean geometry of the plane. The coated glass facers offer a refined, durable skin that partners beautifully with premium membranes. Use it to create subtle transitions that disappear to the eye yet elevate performance. It’s a quiet luxury—smart, resilient insulation that underpins sophisticated architecture.

Elevate your roof’s performance and drainage with Atlas ACFoam-III tapered polyiso—add it to your project today.

Warranty

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98168726825

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4.2 ★★★★★
Based on 14 reviews
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Product Reviews
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Verified Purchase
JustPeachez
Massapequa, US
★★★★★ 1
Was stream of consciousness...
Format: Paperback
Not what I expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2019
A
Verified Purchase
A
Boise, US
★★★★★ 5
Well done!
Format: Kindle
Young, bloodied, sleep deprived and starving, not to mention being surrounded by an army of hungry sharks! It seems almost unimaginable that a sixteen-year-old could experience such a harrowing ordeal and live to tell about it. The story of young Josh, a baseball loving kid from San Antonio, Texas, who forges his mothers signature in order to join the Navy, takes place in 1945 near the end of WWII aboard the USS Indianapolis. After being struck by a Japanese torpedo, the mighty Naval ship sinks, thrusting the survivors into an unforgiving ocean for five harrowing days. The story is fast-paced with lots of action without being overly graphic and is the perfect for middle-schoolers with a penchant for excitement! There's also a great friendship angle which was really great to see especially since the boy Josh befriends (Lee) is of Japanese decent. At the time Josh bears a lot of resentment towards the Japanese since his father was killed when the Japanese bombed Pear Harbor so I think this offers an excellent 'teaching moment' for kids today. The book is chock-full of numerous interesting facts about the USS Indianapolis which I hadn't known before reading the book. Of note, it states that the sinking of the USS Indianapolis resulted in the largest number of shark attacks on humans in history, which I think is a little known and very interesting fact! Well done!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2019
R
Verified Purchase
Robbie Cheadle
Houston, US
★★★★★ 5
A fast paced and exciting read
Format: Kindle
I really enjoyed this book about the sinking of the USS Indianapolis by a Japanese submarine towards the end of World War II. The story is told through the eyes of a sixteen year old boy, Josh, who lied about his age on his enlistment application and forged his mother's signature. He was determined to do his bit for the American war effort and revenge the death of his father during the attack on Pearl Harbour. When the USS Indianapolis was torpedoed, the survivors, about three quarters of the crew, were flung into the ocean without any survival equipment. Many of them did not even have life jackets and were burned by the fire that had broken out on board the ship or injured when they were swept overboard. The scent of urine and blood soon attracts sharks, lots of sharks, and the survivors fear that they have survived the sinking of the ship only to become food for these huge and vicious fish. The story is short and sharp and I think middle school and young teenage boys will really enjoy it. The author shares some details of the attack and sinking of the ship, without making it to graphic and over whelming for younger readers. Boys, particularly, will relate to the action packed excitement of the attack and also to Josh's thoughts about his mother and younger brother back home. The terrible hardship of being in the ocean for a few days, without food or water, the temptation to drink sea water to alleviate the dreadful thirst and the savage behavior of some of the other survivors are all well told but not with so much detail that younger readers will become overwhelmed or bored. Josh's relationship with another young survivor, Lee, who is of Japanese extraction is also most interesting and contains a good message of delving deeper into relationships and people that merely their heritage and looks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 16, 2019
B
Verified Purchase
Barbara Mojica
Chelsea, US
★★★★★ 5
RAW AND REAL
Format: Kindle
A powerful story of a historical adventure narrated through the eyes of a sixteen-year-old survivor. Josh enlisted with forged papers to avenge the death of his father at Pearl Harbor. He is straight out of boot camp serving on the USS Indianapolis when the battleship is struck by a Japanese torpedo. He struggles to escape the burning ship, but that is just the beginning of his troubles. No help is in sight; sharks infest the waters, and the survivors begin to turn against each other. This book is a powerful story filled with raw emotions, adventure, and history. The authors provide readers with an action-packed tale filled with interesting facts about sharks and military history. It contains actual photographs, maps, and hand-drawn illustrations. The book is little more than one hundred pages. Reluctant readers can easily navigate the short chapters with graphics. Targeted for middle grades but just as appealing to young adult and adult audiences.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 16, 2022
R
Verified Purchase
Rachel
Cuba, US
★★★★★ 4
Approved by my 8 year old!
Format: Paperback
My 8 yr old son read it on his own. He liked it but some parts were a bit gross and scary for him. It is along the lines of the I Survived books. He said it was a good story because it was based on real life even though some of the parts were a little scary.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2021

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