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R-Tech

Model 320810

Internet #202533656

Store SKU #703990

1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing

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Product Overview

R-Tech is a cost effective way to increase your project energy efficiency. EPS is a fully recyclable material. R-Tech is also available in thicknesses ranging in 1/8 in. increments from 3/8 in. to 5 in.

  • Designed for use on walls, in basements, as siding underlayment and as foundation insulation
  • Energy Star qualified to meet or exceed federal guidelines for energy efficiency for year-round energy and money savings
  • Cuts easily to size to make installation a snap
  • Poly-facer on both sides for flexibility and durability
  • Moisture-resistant design to help maintain a water-tight seal
  • How much do you need? Let our calculator help:
    Insulation calculator button

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Customer Questions & Answers

13 Questions8 Answers

Customer Questions & Answers

1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing
1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing

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1 answer

Can this be used between studs on shower wall and under hardibacker board?

This question is from 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing
Asked by
San Jose, CA
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May 26, 2016
I have a shower over a tub. The one wall has a window in it. That wall will be insulated between studs under the backerboard. Will this product stay dry under the Hardibacker? I'm going to tile over the Hardibacker.
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Answer (1)

May 31, 2016
Answer: 
– Yes, we recommend taping the joints
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1 answer

Are these panels reflective on at least one side?

This question is from 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing
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April 18, 2016
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April 19, 2016
Answer: 
This is not reflective.
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1 answer

Vapor Permeability

This question is from 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing
Asked by
Seattle
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March 5, 2016
Hi. My application requires a Class II vapor retarder (vapor semi-impermeable) which is greater than or equal to 0.1 perm and less than or equal to 1 perm. The facers on this product lead me to believe it may be less than 0.1 perm or vapor impermeable. Where can I find more information? Thank you
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Answer (1)

March 6, 2016
Answer: 
The specifications page has the information you may be seeking. The water vapor transmission (perms) is < 1.0.
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1 answer

can these panels be used for a ceiling attached to 24" OC ceiling joists?

This question is from 1/2 in. x 4 ft. x 8 ft. R-1.93 Insulating Sheathing
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TX
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January 28, 2016
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February 17, 2016
Answer: 
please check with your building coded
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