SKU: 66275645487

Johns Manville Tapered FESCO Perlite-Based Cover Board, D4 (1.75"–2.25"), 2' x 4', 32 Sq. Ft. Bundle

Sale price$28.51 Regular price$31.68
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Description

Johns Manville Tapered FESCO Perlite-Based Cover Board, D4 (1.75"–2.25"), 2' x 4', 32 Sq. Ft. BundleTapered FESCO Perlite Cover Board, D4 2' x 4' Factory fabricated roofing cover board made from expanded perlite blended with binders and fibers for durable thermal performance. Pre cut tapered panels deliver positive drainage and efficient insulation for commercial roof systems. Key Features: Perlite Composition: Expanded perlite with selected binders and fibers for insulating efficiency Tapered Design: Pre cut to several slopes to promote drainage

Tapered FESCO Perlite Cover Board, D4 2' x 4'

Factory-fabricated roofing cover board made from expanded perlite blended with binders and fibers for durable thermal performance. Pre-cut tapered panels deliver positive drainage and efficient insulation for commercial roof systems.


Key Features:

  • Perlite Composition: Expanded perlite with selected binders and fibers for insulating efficiency
  • Tapered Design: Pre-cut to several slopes to promote drainage and reduce ponding water
  • Convenient Size: 2' x 4' panels in a 32 sq. ft. bundle; 4 pieces per bundle
  • Thickness Range: D4 profile (1.75" to 2.25") for targeted build-up
  • Tested & Listed: UL Classified, FM Approved, meets ASTM C728 Type 1

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Brand Johns Manville
Product name Tapered FESCO Perlite-Based Cover Board
SKU / Material Number 12620
Product number JMCPERD4
Board dimensions 2' x 4'
Thickness D4 (1.75" to 2.25")
Bundle coverage 32 sq. ft.
Pieces per bundle 4
Unit of measure BDL
Item weight 48 lb
Style / Category Roofing Insulation
Applicable standards UL Classified; FM Approved; ASTM C728, Type 1
Description Factory-fabricated insulation panel composed of expanded perlite with binders and fibers; pre-cut to several slopes for tapered applications

Frequently Asked Questions (FAQ):

Q: What is the board made of?
A: It’s composed of expanded perlite blended with binders and fibers, forming a rigid roofing cover board.


Q: What are the panel dimensions and coverage?
A: Each panel is 2' x 4'. A bundle covers 32 sq. ft. and includes 4 pieces.


Q: What is the thickness of the D4 variant?
A: D4 panels range from 1.75 inches to 2.25 inches.


Q: Is it approved for commercial roofing systems?
A: Yes. It is UL Classified, FM Approved, and meets ASTM C728 Type 1.


Q: How does the tapered design help?
A: The pre-cut slopes facilitate positive drainage, helping minimize ponding water on the roof.


Sculpted Slope, Streamlined Roof

This tapered board shapes a roof with quiet precision, guiding water with architectural intention. Its perlite core offers a refined, lightweight strength, while the D4 profile builds elegant elevation without bulk. Pair it with clean-lined membranes and metal edge details for a crisp, contemporary silhouette. It’s a subtle yet essential layer that elevates performance and the poetry of a well-finished roof.


Choose Tapered FESCO today to achieve efficient roof drainage and proven thermal performance with trusted approvals.

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: 66275645487

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Mike
Boise, US
★★★★★ 5
Good
Size: 12 Wide, Color: Black
Easy to walk in good quality, lightweight lace quality is good very comfortable and no resist.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
C
Verified Purchase
California Doug
Bozeman, US
★★★★★ 5
Value!
Size: 11 Wide, Color: Brown
Excellent boot for the price! Very solid. Cushy insoles very comfortable. Wide width plenty wide. Recommend getting half to full size smaller than your usual.
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Reviewed in the United States on May 6, 2026
B
Verified Purchase
bobby
Phoenix, US
★★★★★ 3
Don’t hold up/good Customer Service.
Size: 10.5, Color: Army Green
Please read full review. Where to begin. The boots are comfortable, decent waterproofing, they feel/look well constructed. Unfortunately they did not hold up well, I hikes less than 10 times. My left foot began to hurt on top near bottom of the lace, I tried every lacing method and it still hurt, leading to potential blisters. It was not a break in issue the boots were initially comfortable to wear then around hike 6 they hurt. Reached out to the company they were partially helpful offering a coupon on their website. Their shoes are significantly higher in price on their website. It could have been a lemon pair of boots. Buy with caution. Updated: 4/9/26-CS reached out to me and offered full refund or new pair of boots. I do hike often so I went with the new pair of boots. I will create a new review in the future /update this review. A+ for their CS. Initial review was 2 stars I increased to 3 stars if these boots hold up the score will go higher.
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Reviewed in the United States on March 27, 2026
J
Verified Purchase
Jill
Fort Morgan, US
★★★★★ 5
Nice Grill Cover
Size: 55 Inch, Color: black
I bought this as a replacement cover. It's durably made. It's not too thick or heavy. It fits nicely over my grill. The handles make it easy to put on and take off.
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Reviewed in the United States on May 24, 2026
M
Verified Purchase
MountainMarley
Lexington, US
★★★★★ 5
Durable, Long-Lasting, Doesn’t Fade in the Sun!!!
Size: 50 Inch, Color: black, Size: 50 Inch, Color: black
I’ve had this grill cover for almost a year now. But it last summer and it has been on my grill that is on open porch (no roof/overhang/cover protect protecting it from the elements). This particular area of the porch gets a ton of direct sunlight all day long as well. Needless to say, I am incredibly impressed by the material of this cover. It looks almost brand new even after a year of use and exposure to the elements. The fact that it didn’t even get faded in the sun a little bit blows my mind. Great product and excellent value! Highly recommend.
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Reviewed in the United States on May 21, 2026

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