Skip to product information
1 of 1

Radiant Barrier for use in Attic applications

Perforated Radiant Barrier Foil - 4' x 125' (500 sq ft)

Perforated Radiant Barrier Foil - 4' x 125' (500 sq ft)

SKU: EFM4800-48-125PERF

Ideal for use in attics. Tiny holes promote air flow and prevent mold.

Regular price $87.00
Regular price Sale price $87.00
Sale Sold out


EcoFoil Perforated Radiant Barrier uses reflective technology to increase the energy efficiency and comfort level of your home. A radiant barrier is made of a thin layer of woven polyethylene which is sandwiched between two layers of a highly reflective metalized coating. With the polyethylene core the product cannot be ripped or torn. It blocks 96% of radiant heat transfer, helping keep your home cooler in the summer and warmer in the winter.

With the word perforated in the product title, it's important to note this type of radiant barrier has tiny pin holes punched every 1/4" throughout the roll, making it the only product to be used in an attic. This is because Perforated Radiant Barrier allows moisture, at a molecular level, to pass through it. In a warm climate or Summer application, the best installation would be on the bottom of the rafters or trusses with staples. In a cold climate or Winter application, the best installation would be over the insulation on the attic floor, laid right on top. For dual climates and maximum efficiency it is recommended to be installed in both places. Perforated Radiant Barrier works by reflecting heat away from the attic during long, hot summer days and reflecting heat back into your living space during those cold winter nights.

R-Value Of Radiant Barriers

Rather than rating by R-value, all radiant barrier products are measured by their reflective and emissive properties. EcoFoil radiant barrier insulation is 96% reflective and 4% emissive, meaning the product only allows 4% of radiant heat to pass through. 

There are some companies out there posting big R-Value numbers for their radiant barriers, but those numbers are rating the entirety of the system—including the product, air gap, and other building materials. In reality, most radiant barriers by themselves have little to no R-Value. If you need to satisfy a building code of a specified R-Value, we recommend the use of a traditional insulation in conjunction with our radiant barrier in order to meet code. For more information on R-values, see our How It Works page or contact a member of our friendly service team via chat, by calling (888) 349-3645, or using the form here.  

Important - It is NOT RECOMMENDED to use any type of tape on the EcoFoil Perforated Radiant Barrier in your attic. The tape will block the perforations and allow condensation to form in these places.


Made of a thin layer of woven polyethylene, sandwiched between two layers of a highly reflective metalized coating. Tear-resistant. Tiny perforations allow passage of moisture and promote air flow.

Shipping Info:

EcoFoil ships free via FedEx Ground. Products ship same-day on orders received before 4pm CT and typically arrive between 1-4 days. Expedited shipping options available. Call us at 888.849.3645 or contact us for more information on shipping options.


48 in x 125 ft (500 square feet per roll)

less than 1/64" thick

Spec Sheets:

Download Spec Sheet
View full details

Customer Reviews

Based on 12 reviews
Sebastian D.
Easy to work with

This product is easy to work with and feels high quality. Cannot judge performance yet and don’t have another product to compare it to but I’m confident that the radiant barrier will pay for itself relatively quickly in terms of energy bills.

linville brown

Installed on the rafters, can already tell a difference.

James Schwab

Perforated Radiant Barrier Foil - 4' x 125' (500 sq ft)

EcoFoil March 2022

Product is very easy to work with and install. Effectiveness of product will be determined in the upcoming warm months here in Western NY state.

Richard Olsovsky

Perforated Radiant Barrier Foil - 4' x 125' (500 sq ft)

Shop Radiant Barrier

  • Free Shipping

    EcoFoil offers free shipping on all products. Expedited shipping options available.

    Shipping and Returns 
  • Product Expertise

    Questions about Radiant Barrier? We're here to help with installation tips, quantity estimation, and bulk pricing.

    Contact Support