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Atlas ThermalStar Fan Fold LRI - 3/8 in. x 4 ft. x 50 ft. Fanfold Roof Insulation with Dual Film Facers
Regular price $141.07Orders start at $399 — combine any items to reach the minimum. Learn more
Atlas ThermalStar Fan Fold LRI - 3/8 in. x 4 ft. x 50 ft. Fanfold Roof Insulation with Dual Film Facers
This is Atlas ThermalStar Laminated Roof Insulation (LRI), a continuous rigid fanfold insulation with dual film facers and a PVC compatible film, supplied in a bundle of 3/8 in. x 4 ft. x 8 ft. fanfold panels rated 15 psi. One bundle covers two squares and installs quickly, and the product is backed by a limited lifetime warranty for physical and thermal performance.
Key Features:
- Continuous Insulation: ThermalStar LRI is continuous insulation with a PVC compatible film.
- Dual Film Facers: Dual film facers make LRI more durable against typical jobsite abuse during transport, storage and installation.
- Fanfold Format: Available as 4 ft. x 50 ft. fanfold for easy, quick installation.
- Two Squares Per Bundle: One bundle covers two squares, providing labor savings during installation.
- 15 psi Grade: This item is the 3/8 in. thick, 15 psi version.
- Limited Lifetime Warranty: Backed by a limited lifetime warranty for physical and thermal performance, with terms in the separate ThermalStar warranty.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Atlas |
| Sell unit | 1 bundle (BD) |
| Product line | ThermalStar LRI/CRL |
| Available sizes | 0.375 x 4' x 8' at 15 psi (1 item on this page) |
| Material | Rigid foam insulation with dual film facers |
| Finish / texture | PVC compatible film facing |
| Dimensions | 3/8 in. thick x 4 ft. x 8 ft. sheets, fanfold |
| Thickness | 0.375 in. |
| Coverage per unit | One bundle covers two squares |
| Wind / fire / impact rating as printed | 15 psi |
| Pack quantity | Fanfold bundle (BD) |
| Warranty | Limited lifetime warranty for physical and thermal performance; see separate ThermalStar warranty for terms and conditions |
| Intended use | Continuous rigid insulation for new roofing and re-roofing |
Coverage & How Much You Need:
One bundle of ThermalStar LRI covers two roofing squares (200 sq ft). Panels are fanfold in 4 ft. x 50 ft. format (this item lists 3/8 in. x 4 ft. x 8 ft. sheet configuration), so plan bundle counts by dividing roof area by 200 sq ft per bundle.
Fit and Compatibility:
Designed for use in new and re-roofing applications as continuous insulation under roofing systems. It is part of the ThermalStar rigid insulation line; confirm compatibility with the chosen roofing membrane and attachment method before installation.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One bundle of Atlas ThermalStar Fan Fold LRI, 3/8 in. thick, 15 psi, which covers two squares.
Q: How much does a bundle cover?
A: One bundle covers two squares, or 200 square feet of roof area.
Q: What facers does it have?
A: It has dual film facers, including a PVC compatible film, for durability and compatibility.
Q: How is it installed?
A: The 4 ft. x 50 ft. fanfold format allows easy and quick installation over the roof deck or existing roof.
Q: Is there a warranty?
A: Yes, a limited lifetime warranty covers physical and thermal performance; see the separate ThermalStar warranty for terms and conditions.
Q: Is it suitable for re-roofing?
A: Yes, ThermalStar products are offered for both new and re-roofing needs.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Fanfold LRI is the fast choice for re-cover work: it unrolls over the existing roof and its dual film facers stand up to jobsite handling better than single-faced board. At 3/8 in. and 15 psi it suits re-cover assemblies where a thin, tough layer is needed; specify thicker rigid board where R-value targets demand it. Confirm the membrane manufacturer's approval for the insulation layer before install.
Verify deck condition and follow local building code requirements for insulation and fire separation when installing roof insulation.
Order Atlas ThermalStar Fan Fold LRI to add durable continuous insulation to your next re-roof.
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