Environmentally Safe Products ESP Low-E ThermaSheet Reflective Insulation Roll, 4 ft x 125 ft, 3/16 in.

This is Environmentally Safe Products Low-E ThermaSheet insulation, a 3/16 in. reflective radiant barrier supplied as a 4 ft x 125 ft roll in gray. It is a polyethylene foam product with reflective low-e facing for radiant heat control. Pair it under metal roofing, in post-frame walls or wherever a radiant barrier is specified.

Key Features:

• Reflective radiant barrier: Functions as a reflective radiant barrier insulation for heat control.
• Foam core: Built on polyethylene foam for combined insulation and barrier performance.
• Large roll: One 4 ft x 125 ft roll covers 500 square feet before laps.
• Low-E technology: Low-emissivity facing reduces radiant heat transfer.
• 3/16 in. thickness: Measures approximately 3/16 in. thick for use where depth is limited.

Specifications Table:

Coverage & How Much You Need:

One 4 ft x 125 ft roll covers approximately 500 square feet. Measure the roof or wall area, allow for laps and staple overlap, and divide by 500 sq ft per roll to size the order.

Fit and Compatibility:

Commonly installed under metal roofing, over purlins, or in wall and ceiling assemblies where a radiant barrier is specified. Confirm facing orientation (reflective side toward the air space) per manufacturer instructions; fasteners and tape are sold separately.

Frequently Asked Questions (FAQ):

Q: What is included with one order?
A: One roll of Low-E ThermaSheet measuring 4 ft x 125 ft at 3/16 in. thick in gray.

Q: How many rolls do I need?
A: Estimate the area to cover, add 5 to 10 percent for laps and waste, then divide by approximately 500 square feet per roll.

Q: How thick is it?
A: The product measures approximately 3/16 in. thick, making it suitable where cavity depth is limited.

Q: What is it made of?
A: It is a polyethylene foam product with low-emissivity reflective facing.

Q: Which way does it face?
A: Install with the reflective surface toward the adjacent air space per the manufacturer’s instructions for radiant barrier performance.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Radiant barriers deliver the most benefit over air spaces, so do not compress this material against solid insulation; leave the gap the system is designed for. Under metal roofing it both blocks radiant gain and acts as a condensation barrier, but check your metal roof manufacturer’s requirements for underlayment first. On large roofs, plan roll layout so seams fall on purlins for easy stapling.

Wear gloves and eye protection when cutting and stapling reflective insulation, and keep the material clear of heat-producing fixtures per the manufacturer’s clearance guidance.

Order the ESP Low-E ThermaSheet 4 ft x 125 ft roll for radiant heat control on your next build.