Model # 70-105-1

Internet # 203139756

Store SKU # 103848

AirGuard 630 sq. ft. 40 in. x 189 ft. x 1/8 in. Value Roll of Premium 3-in-1 Underlayment with Microban

This item has been discontinued.
The Home Depot no longer carries this specific product.

$0.47 /sq. ft.
Covers 630.0 sq. ft.
$296.00 / roll


Model # 70-105-1

Internet # 203139756

Store SKU # 103848

Store SO SKU # 1000410147

The Roberts AirGuard Premium 3-in-1 Underlayment is ideal for installing laminate and engineered wood floors, providing the moisture barrier, sound reduction and cushioning required for a proper, quality installation. Manufactured with both Microban and airflow technology to inhibit mold growth, the underlayment is designed to prevent the development of odor- and stain-causing bacteria, mold and mildew. The airflow technology creates a pocket of constantly circulating air to further inhibit mold growth, and an 8 in. overlap film protects floors from moisture. Sound suppression characteristics make AirGuard a perfect choice for installation in multi-level buildings.

  • Patented airflow technology and Microban antimicrobial product protection inhibit the growth of stain- and odor-causing bacteria, mold and mildew
  • Large size roll of 630 sq. ft. provides savings over smaller rolls
  • Ideal for use over radiant heated floors
  • Easy to roll out, attach and cut for fast installation
  • Sound test results of STC=67 and IIC=68
  • R-value for heat flow of 0.39
  • Moisture passes through first layer and is blocked by second layer, allowing moist air to move and be released at room perimeter by walking on floor
  • POLYshim between plastic sheets provides cushioning and is 96% crush resistant
  • 8 in. overlap with adhesive strip seals out moisture
  • Reduces noise and sound transmission between floors

Info & Guides

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Product Width (in.) 
Product thickness (mil) 
Recommended overlap (in.) 
Roll length (ft.) 
Roll width (in.) 
Commercial / Residential 
Commercial / Residential 
Flooring Product Type 
Flooring type(s) used with 
Moisture control included 
Package coverage (sq. ft.) 
Sound absorbing 
Subflooring type 
Warranty / Certifications
Manufacturer Warranty 
To be free from manufacturing defects 


Rated 4.3 out of 5 by 33 reviewers.
Rated 4.0 out of 5.0 by Laying Tongue and Groove Engineered Floor Once I calculated the layout, so as not to leave a skinny strip to lay, I found it easy to measure, lay and glue the flap onto the next roll. It is quite fragile and tears if you are not careful. Small tears I fixed with some packaging tape. Acts well as a sound insulation. Noticeable after the bare concrete floor previously, much quieter. Good stuff. May 7, 2015
Rated 5.0 out of 5.0 by Great quality product Product is high quality and easy to install. May 9, 2014
Rated 5.0 out of 5.0 by Great Investment Item compliments the laminate VERY well. I've already noticed a huge different between the heat remaining on the main level. Very easy to lay and cut. Love that it has a sticky strip to lay side to side. Definitely go with the 630ft roll online vs. the 100ft rolls in store because you save about $0.30/ sq ft. Order was pretty fast, got it in less than 2 weeks despite it being out of stock when I first placed the order. November 17, 2013
Rated 5.0 out of 5.0 by Great Underlayment This worked great as underlayment for the laminate floors I just installed in my guest bedroom. I was glad I didn't have to install a separate moisture barrier as well, since the Airguard adds cushion as well as having a waterproof top layer. The self adhesive overlap was another great feature, and the excess adhesive from the first row doubles as a great snag/puncture repair method. The underlayment was pretty resistant to tearing too. I installed it perpendicular to the flooring, so I was walking on it while installing the rest of the floor, and it did pretty well with standing up to the extra wear. I did scrape through it a few times while I was hitting the tapping block with the mallet, but it's pretty easy to patch anyway. The red top color and clear bottom color help make it easy to keep the underlayment right side up. Plus it's easier to see tears and holes that need to be repaired in the red top coat. It's also great for keeping the floor from sounding hollow. While I was picking out laminate, I noticed the underlayment display Home Depot has set up in the same aisle. They had a golf ball you could hit against flooring with different types of underlayment below it. The Airguard was one of the best options, and it was also one of the cheapest that actually made the floor sound solid and not hollow. The only downside is that you'll get quite a few styrofoam beads scattered about the room as you're cutting it. This was particularly noticeable when I trimmed the excess when I January 4, 2015
Rated 4.0 out of 5.0 by Good moisture protection for you laminate flooring For me Microban protection is a huge factor as it prevents the growth of stain and odor causing bacteria and also inhibits mold and mildew. In our basement we have issues with moisture that causes slight mildew problem that I no longer have to worry about. How effective it is, only time will tell as a month is too short of a time to tell that. Installation was easy. Thickness is okay and better than standard underlayment or pre-attached underlayment. It's more cost-effective to buy this bigger roll and 630 ft will work for most rooms. Sound protection/ deadening is effective but not great. Overall an above average product. December 31, 2014
Rated 5.0 out of 5.0 by Airguard Premium 3-in-1 Underlayment I have been using this product for a few years now and will only use it and nothing else. I have installed several floors for myself, family and friends. I have recommended to friends as well as contractors that I know and all have become fans. It cost more than Rosen or felt paper but you get what you pay for. This avoids the moisture problem for floors, as well as possible squeak problems of wood floating on wood. Also helps to kill some sound between levels. March 14, 2012
Rated 4.0 out of 5.0 by Good product. Easy to use. Feels solid underfoot. I installed this 3-in-1 underlayment product under approximately 500 sq. ft. of a popular brand of laminate flooring sold at The Home Depot over concrete (treated with DryLock masonry waterproofer) in a finished basement. I considered buying flooring with the underlayment preattached, but the preattached underlayment was inferior (cheap foam) and the cost of the flooring with the underlayment preattached was much greater than purchasing underlayment and flooring without underlayment preinstalled separately. The preinstalled underlayment also leaves a small gap where the laminate flooring clicks and locks together, which is another reason I decided it was better to purchase underlayment and flooring separately. This product is light-weight (about 20 lbs for the entire 630 sq. ft. roll) but because it comes in a single continuous roll with a length of 189 ft., it can be a bit awkward for one person to carry. The thickness of the material is 1/8 inch (3 millimeters). The usable width of product is 40-inches with an 8-inch overlap which has a tacky adhesive which allows for the product to be reposition, if necessary. I wanted a more permanent and impervious seam, so after positioning the seam where I wanted it, I ran a strip of 2-inch Gorilla-brand duct tape along the entire length of each seam, as a sort of belt and suspenders approach, to ensure the product didn’t separate over time. Having previously installed laminate and engineered hardwood using a different brand of underlayment that didn’t have beads to allow air to pass underneath, I was concerned the floor would feel spongy, but thankfully it doesn’t. When I removed the old underlayment, I noticed an accumulation of black mold and a moldy smell. My basement is dry and the sump looks like it’s never seen water, so I was surprised to find mold. The airflow created by the beads floating about the floor is supposed to defend against mold. While it’s too early to know if this underlayment effectively controls mold, it does provide the added benefit of a small R-value, which is noticeable as compared to the single-layer product I had used in the prior installation. The product is essentially thin plastic sheeting with Styrofoam beads adhered to one side. The beads do come off during unpacking, handling, and product installation, but losing a few (hundred) beads doesn’t materially affect the installation or product effectiveness. I’d read that the product will lose some height due to compression under weight, so I held off reinstalling the baseboard moulding for a couple of weeks to allow the floor to settle so as not have an unsightly gap between the settled flooring and the base moulding. Overall, it’s a good product and is reasonably priced as compared to other underlayment products. It cuts easily with a razor knife or scissors and is easy to work with. Although, in my opinion, the products doesn’t look and feel “high-quality’ compared to other underlayment products, it does work well which I suppose is all that really matters, especially since no one sees the underlayment after it’s installed underneath the flooring. June 4, 2014
Rated 5.0 out of 5.0 by Updating, remodel 630 square feet on one roll at a very good price, my project needed a little over 600 s.ft. June 2, 2015
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