Internet #100320258

Model #50000056

Store SKU #785685

1/2 in. x 3 ft. x 5 ft. Cement Board

  • Lowest water absorption of any cement board
  • Reinforced edges allow for closer fastener application
  • Suitable for both interior and exterior applications
  • See More Details

Product Overview

Permabase 2-3/4 ft. x 5 ft. x 1/2 in. Cement Board is a rigid substrate made of Portland cement, aggregate and glass mesh that provides an exceptionally hard, durable surface that is able to withstand prolonged exposure to moisture. Permabase is ideally suited as an underlayment or backing surface for tub and shower surrounds, countertops, flooring and a variety of other interior and exterior applications. The EdgeTech reinforced edges allow for easier application of fasteners.
  • California residents
  • Provides a hard, durable surface
  • Able to withstand prolonged exposure to moisture
  • Made of Portland cement, aggregate and glass mesh
  • Long, tapered edges are formed smooth and shatter-proof using double-wrapped EdgeTech technology
  • EdgeTech technology allows for closer fastener application at the edge
  • For indoor or outdoor use
  • Can be used in both interior and exterior applications
  • GREENGUARD GOLD certified
  • How much do you need? Let our calculator help:

    Drywall calculator button

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Specifications

Dimensions

Drywall Product Thickness (in.)
1/2 in.
Product Length (ft.)
5
Product Thickness (in.)
.5 in
Product Width (ft.)
3
Width (ft) x Length (ft)
3x5

Details

Drywall Features
Fire Resistant,Moisture Resistant,Mold Resistant
Product Weight (lb.)
42.99 lb

Questions & Answers

29Questions20Answers

How does this compare with James Hardie 0.42 for installation around bath tub?

Asked by John July 24, 2020
2
Answers

PermaBase Cement Board has superior moisture resistance to fiber cement products.

I have bathroom subfloor (with slight water damage) that was covered with vinyl flooring, butting...

Asked by DMan April 9, 2020
2
Answers

It is my experience that subfloor should be oriented strand board (OSB). Cement board can go on top. For floor, use 1/4” cement board - you’ll find that in the flooring section of the store. Difference in elevation between bathroom and hallway or bedroom can be handled with transition thresholds. Hope this helps.

Is this nominally .42"inch thick, even though it says 1/2" inch or is this a "true" 1/2 inch thic...

Asked by customer95337 March 27, 2020
2
Answers

I find that tolerances are loose in general with building products. You’ll be using thin-set on top of this so that 0.08” can be easily gapped.

What is the R value of this product?

Asked by Rae November 23, 2019
1
Answer

The R-value of 1/2" PermaBase is .37.

is this cement board water proof for shower installation

Asked by BlueberryB June 19, 2019
4
Answers

Who’s right? I tend to go with manufacturer that has tested. Explain if you say “.no”

How to repair

Asked by Anita April 28, 2019
2
Answers

Recommend full demo if surface cannot be made even when applying new thin set mortar for the re- tiling.

Can cement board be repaired or does it have to be replaced? Tile contractor put motar too thick so when removing tore

Asked by Anita April 28, 2019
1
Answer

Once the tile is removed, use latex modified portland cement mortar to repair the board. Apply a layer of mortar over the damaged area, press between the fibers of the mesh and trowel flat to glue the board back together.

is permabase waterproof ? Direct to stud attach ?

Asked by Ever April 13, 2019
2
Answers

No. It’s is made in large part with cement, and it is permeable, (water can go through it. If you are using it behind tile in a shower for example, I recommend using 2 good coats of a product call Redguard after installing the cement board and taping and mudding the joints with thin set. You roll it onto the surface with a coarse paint roller. That will make it waterproof, as long as you take care to cover the surface completely with 2 good coats of the Redguard. You can also buy the Redguard at Home Depot. It’s expensive, but it really works well, and is easy to apply. Just make sure you do a good job!

What side goes up rough or smooth

Asked by Craig March 26, 2018
2
Answers

I use the rough for mechanical adhesive grab. Smooth when painting or under porch animal blocking.

Home Depot have 1/4 in. X3 ft. X5 in this product

Asked by Rodrigo February 16, 2018
2
Answers

No. Home Depot only has Permabase in 1/2” thickness. But they do have other products in 1/4” thickness.

1/2 in. x 3 ft. x 5 ft. Cement Board - page 2

Customer Reviews

  • 46 Customer Reviews
  • 4.7 out of 5 stars overall
100% of customers recommended.
Overall Ratings
5star-icon(32)
4star-icon(12)
3star-icon(2)
2star-icon(0)
1star-icon(0)
Sort By:
Good product. Contractor had no issues. Crumbles easily so be careful on how you transport and sc...
Good product. Contractor had no issues. Crumbles easily so be careful on how you transport and score it.
Was this helpful?
0
0
Response from NGCTechDecember 1, 2020
Thank you for purchasing our PermaBase cement board product. Please send any images of your project and any additional comments you would like to share to Retail@NationalGypsum.com. NationalGypsum
The cement board was Great to work with and surprisingly easy to cut.
The cement board was Great to work with and surprisingly easy to cut.
Was this helpful?
0
0
The 12 boards were all perfect. HD kept them well supported so they were flat. The ones I saw a...
The 12 boards were all perfect. HD kept them well supported so they were flat. The ones I saw at the L were not supported well. These cut pretty easily with scoring and holes cut quickly with diamond hole saws(use water). I also made some cuts with a diamond reciprocating saw blade. Use water in a spray bottle to keep down dust and cut faster.
Was this helpful?
2
0
Was this helpful?
0
0
Excellent product, very easy to work with, supports 12x24 inch...
Excellent product, very easy to work with, supports 12x24 inch tiles that receive constant winter traffic without any grout, tile or adhesive failure.
Was this helpful?
0
0
Response from NGCTechNovember 30, 2020
Thank you for purchasing our PermaBASE cement board product. Please send any images of your project you would like to share to Retail@NationalGypsum.com. NationalGypsum
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
Was this helpful?
0
0
Response from NGCTechDecember 1, 2020
Thank you for purchasing our PermaBase cement board product. Please send any images of your project and any additional comments you would like to share to Retail@NationalGypsum.com. NationalGypsum
Easy to use...worked as described....
Easy to use...worked as described.
Was this helpful?
0
0
Response from NGCTechDecember 1, 2020
Thank you for purchasing our PermaBase cement board product. Please send any images of your project and any additional comments you would like to share to Retail@NationalGypsum.com. NationalGypsum
Easy to work with and covered well the wall...
Easy to work with and covered well the wall
Was this helpful?
0
0
Response from NGCTechDecember 1, 2020
Thank you for purchasing our PermaBase cement board product. Please send any images of your project and any additional comments you would like to share to Retail@NationalGypsum.com. NationalGypsum
Did what i needed perfectly, cuts easy, and makes a...
Did what i needed perfectly, cuts easy, and makes a solid flat base for the floor overlay.
Was this helpful?
1
0
Response from NGCTechOctober 12, 2020
Thank you for your review. We're glad your job went well! NationalGypsum
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
Was this helpful?
0
0
Response from NGCTechDecember 1, 2020
Thank you for purchasing our PermaBase cement board product. Please send any images of your project and any additional comments you would like to share to Retail@NationalGypsum.com. NationalGypsum
Review this Product
Share your thoughts with other customers