0047563701265

Owens Corning

Model AS2

Internet #100676399

Store SKU #554355

Store SO SKU #583042

25-1/2 in. x 54 in. Attic Stair Insulator II

$53.95 /each
  • Lightweight, provides comfort for your home year-round
  • GreenGuard certified
  • Attic Stair Insulator II 25-1/2 in. x 54 in.

Frequently Bought Together

Product Overview

Choosing The Right Insulation

Faced Insulation

Faced

Face insulation uses kraft paper vapor barrier to control moisture transmission between 
walls and floors 

*Check your local building code for requirements
Unfaced Insulation

Unfaced

Unfaced insulation does not have a vapor barrier; used over existing insulation in the attic, or where moisture control is not needed

Rolls Insulation

Rolls

Continuous rolls are easy to transport and can be cut to length; great for large areas

Batts Insulation

Batts

Come in pre-cut lengths for faster installation and each package contains more square feet than rolls; ideal for framed cavities

Blow-In Insulation

Blow-In Insulation

Installed using blowing machines, best for adding additional insulation in attic

Regional R-Values

Regional R-Values Map

The Department of Energy recommends different insulation
levels based on regional climate zones to increase energy efficiency

Map key with insulation type based on region

This easy-to-install insulator can help reduce air leaks and close the insulation gap created by attic stair access points, leading to reduced energy costs year round. The insulator is comprised of durable, pink fiberglass insulation and tough, highly reflective foil. The Attic Stair Insulator is available in one standard size to fit most attic stairwell openings.

  • Designed to cover access points up to 25-1/2 in. x 54 in.
  • Comes fully assembled and is easy to install and remove
  • R-10 rated and helps reduce energy loss year-round
  • GREENGUARD certified

Info & Guides

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Specifications

Dimensions

Details

Warranty / Certifications

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Customer Questions & Answers

10 Questions69 Answers

Customer Questions & Answers

25-1/2 in. x 54 in. Attic Stair Insulator II
25-1/2 in. x 54 in. Attic Stair Insulator II

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This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
 
11 answers

will this cover the protruding parts of the stair when closed?

This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
Asked by
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November 28, 2014
I have about 5" of stair protruding above attic floor when the stair is closed. Because the insulator is triangular I wonder whether it has enough space to contain this part without lifting up
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Answers (11)

Asked by
Connecticut
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Home Improvement Profile: DIYer
December 8, 2015
Answer: 
Yes - it goes up a foot or two. It's like a small pup tent with straight sides up to a pitched top.
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Asked by
New Jersey
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November 3, 2015
Answer: 
yes it will. That is why it is tent shaped, so that there is room to fit in the parts that stick up into the attic.
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Asked by
Scott Depot, Scott, WV 25560, USA
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November 3, 2015
Answer: 
This seems to be a popular question for this product. It works fine for me, but I have read that it didn't for others. I have 8 foot ceilings and my ladder stacks up on itself twice and I don't have a problem. but you could always set the tent on blocks or something to make it higher. I'm sure I have 5 inches or better protruding myself and it's just fine. The tent is so big that it sets a good bit past Read More
This seems to be a popular question for this product. It works fine for me, but I have read that it didn't for others. I have 8 foot ceilings and my ladder stacks up on itself twice and I don't have a problem. but you could always set the tent on blocks or something to make it higher. I'm sure I have 5 inches or better protruding myself and it's just fine. The tent is so big that it sets a good bit past the openings of the ladder at least for me. Read Less
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Asked by
Boston, Massachusetts
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July 31, 2015
Answer: 
yes, if you have a frame around the stairs. This should sit atop the frame, not inside it. We have particle board flooring flush with the top of the frame, which helps the seating and seal.
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Asked by
Maine
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Home Improvement Profile: DIYer
February 4, 2015
Answer: 
The height of the tent is 25 1/2 inches but if you don't feel comfortable with that, try adding 4" or 6" of batt insulation around the attic door opening and then setting your "tent" on top of that. Works really well.
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Asked by
Hazlet, NJ
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December 30, 2014
Answer: 
NO
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Asked by
AuGres, Michigan
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Home Improvement Profile: DIYer
December 23, 2014
Answer: 
Not sure what you are asking especially the last part about "enough space to contain this part without lifting up". When I come down the stairway, I adjust the cover so it fits over the opening. Then when I reach the floor I let the stairway go back up into the attic. This cover will fit the whole opening and the stairway still has lots of room to go up into the attic because the cover has a peak like a Read More
Not sure what you are asking especially the last part about "enough space to contain this part without lifting up". When I come down the stairway, I adjust the cover so it fits over the opening. Then when I reach the floor I let the stairway go back up into the attic. This cover will fit the whole opening and the stairway still has lots of room to go up into the attic because the cover has a peak like a house roof does. Read Less
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Asked by
Connecticut
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December 12, 2014
Answer: 
The product will cover the protruding parts if it is placed carefully and "fluffed" outward and out of the way of the hinge mechanism.
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Asked by
Massachusetts
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December 9, 2014
Answer: 
It will cover it no problem. I have almost a foot and it fits into the triangle just fine
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December 4, 2014
Answer: 
The height is 25.5” The insulation is only 3” thick. The clearance is going to be over 20” at the peak of the ‘tent’. Thank you for your inquiry!
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Asked by
Cumming, Ga.
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Home Improvement Profile: Professional
November 30, 2014
Answer: 
The cover is wide enough and tall enough to cover the 5" protrusion above the stairs. The cover can be shaped a small amount to adjust to many situations.
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This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
 
11 answers

Could this be used to cover an attic fan?

This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
Asked by
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November 15, 2013
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Answers (11)

Asked by
New Jersey
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November 3, 2015
Answer: 
If your fan is smaller than the size of the tent, I don't see why you couldn't use it for that purpose.
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Asked by
Scott Depot, Scott, WV 25560, USA
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November 3, 2015
Answer: 
probably, but it would be a unnecessary premium cost for such an application such as that I would imagine. better off just to buy a piece of insulation and lay over it or something. If it's metal and has a metal frame, they make these thin magnet sheets you can cut and put over the opening.
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Asked by
Atlanta, Ga
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Home Improvement Profile: DIYer
August 19, 2015
Answer: 
I am using one over the attic fan. The fan is square, so there is excess tent material hanging over opposite ends. I put a couple pieces of 2 x 4 over the excess to hold it down. I also put the plastic cover piece over the on/off switch down in the hallway so that the fan could never be turned on with the tent over it. This is not air tight but does cut down on the blast of cold air that could be felt Read More
I am using one over the attic fan. The fan is square, so there is excess tent material hanging over opposite ends. I put a couple pieces of 2 x 4 over the excess to hold it down. I also put the plastic cover piece over the on/off switch down in the hallway so that the fan could never be turned on with the tent over it. This is not air tight but does cut down on the blast of cold air that could be felt below. Read Less
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Asked by
Boston, Massachusetts
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July 31, 2015
Answer: 
No. Not at all, due to its size and shape.
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Asked by
AuGres, Michigan
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December 23, 2014
Answer: 
Not sure what kind of attic fan you are talking about.
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Asked by
Cumming, Ga.
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October 15, 2014
Answer: 
No. This product is designed for the attic staircase. Attic fans are vertically or horizontally mounted. Most are square and this product will not fit.
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Asked by
Anonymous
July 15, 2014
Answer: 
I'm sure it could be used. The only problem I see is that Attic fans are usually 24x24, so you will have a lot of this thing hanging over on one side.
I would suggest just getting some regular attic insulation in a roll (r-30) and cut a few pieces to fit in the fan or on top of the fan.
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Asked by
New Jersey, USA
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April 1, 2014
Answer: 
Yes, if you taped it in place. Not sure why you want to cover an attic fan. Even in winter, your attic needs to breathe. It's supposed to be colder than the main part of the house.
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Asked by
Calverton NY
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December 31, 2013
Answer: 
No. It comes as tent shape.
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Asked by
midHudson Valley
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December 10, 2013
Answer: 
No. Not the right shape. There is nothing on this to attach it to the underside of the roof. You could make something much cheaper.
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November 21, 2013
Answer: 
It is not designed for nor recommended for use covering an attic fan.
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This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
 
10 answers

Does this come any wider than 25-1/2, or is there something similar that would work?

This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
Asked by
Pittsburgh, PA
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January 3, 2014
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Answers (10)

Asked by
Scott Depot, Scott, WV 25560, USA
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November 3, 2015
Answer: 
It says it's only available in one standard size to fit most openings. You could make your own with purchasing some duct wrap but making it any wider without some kind of extra support may fail to work properly. Because of the weight of the insulation, trying to make it any wider may could collapse the tent. Construct a lightweight tent with furring strips and fit insulation over top of it.
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Asked by
Maine
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Home Improvement Profile: DIYer
February 4, 2015
Answer: 
The 25 1/2 inches is for the height of the tent. The length is 54 inches. Fits very well over a standard attic door opening. If it's not high enough for your attic stairs once they are pushed up into the "tent", try adding 4" or 6" batt insulation around the opening and then set your tent on top of that. Works like a charm!
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Asked by
Maine
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Home Improvement Profile: DIYer
February 4, 2015
Answer: 
Here on the Home Depot website it tells you that the height is 25 1/2 inches and the length is 54 inches. So you need to know the height of your stairs once folded up into the attic. If you don't have the height, like mine, lay some additional insulation 4" or 6" thick, around the opening and then put your insulator "tent" on top of that centered over the opening. Works like a charm!
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Asked by
AuGres, Michigan
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Home Improvement Profile: DIYer
December 23, 2014
Answer: 
As far as I know, it only comes in one size--25-1/2 by 54. However, you could always contact Owens Corning to see if they have other sizes available. You could probably use a piece of regular insulation, R-10 and 3 to 4 inches thick and just lay it over the opening and it should have a foil face on both sides. I believe this insulator will work better and last longer.
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Asked by
Cumming, Ga.
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Home Improvement Profile: Professional
October 15, 2014
Answer: 
From what I have found this is the only width. I haven't found any covers like this any wider. If you need a wider one I would suggest searching the internet for possible products.
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Asked by
New Jersey, USA
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April 1, 2014
Answer: 
I could only find this one size. If you need a larger size, you could build a rectangular box out of the insulation they have at Home Depot. It's really easy. There are several How To videos on Youtube. Type in "Attic Pulldown Insulation. "
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February 7, 2014
Answer: 
I think you could push it wider with wood or something. it's flexible.
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January 28, 2014
Answer: 
There is just the one size for the stairway insulator--it covers 25.5" x 54".
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Asked by
midHudson Valley
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Home Improvement Profile: DIYer
January 24, 2014
Answer: 
If you don't find it in the store or on line or at any other retailer, then there may not be another size. I think this is the standard size of the attic stair assembly that is sold in most stores. You could also check at lumber yards that sell attic stairs, maybe they have another size. Also check with the manufacturer.
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January 6, 2014
Answer: 
Thank you for your recent inquiry with The Home Depot. Because this item is only available in Home Depot stores, I believe the best advice would be to talk to one of our many specialty department professionals at your local Home Depot store. For any other questions, please visit your nearest local Home Depot store.
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This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
 
9 answers

Is this product primarily used for an attic stairway door that leads to the actual living space of a home?

This question is from 25-1/2 in. x 54 in. Attic Stair Insulator II
Asked by
Merritt Island
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October 14, 2015
We live in Central FL and the door to our attic is in our (attached) garage, not the interior of our house (air conditioned living space). Although the attic door doesn’t close all the way and has a very large gap in the frame due to bent stair hinges, any escaped air from the attic just goes into our garage, which otherwise is sealed from the interior of the house because we have 2 solid/sealed doors between the garage and the inside of the house. We haven’t found an easy/inexpensive fix for the bent hinges/attic door gap, other than replacing the entire pull-down attic stairway. That said, do you think this product would do us any good? If so, why?
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Answers (9)

Asked by
Nashville TN
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March 22, 2016
Answer: 
No. If neither the attic or garage is heated/cooled space, then this product makes no difference and is a waste of your money. However, I would recommend replacing the pull down stairs as they are dangerous. They were probably a cheap contractor product. A competent DIYer or pro carpenter would be needed to replace the existing stairs which are not too much more expensive that this stair insulator.
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Asked by
Read all my Q&A
February 23, 2016
Answer: 
Yes. It installs inside the attic right over the stair opening. No permanent installation required, so when you use the attic stair to get in the attic you just set it aside in the attic. It is completely covered in foil, so you don't have to worry about getting any insulation fibers on you.
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Asked by
Social Circle, GA
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Home Improvement Profile: Professional
December 8, 2015
Answer: 
First and foremost, are your stairs safe to use? In answer to your question, in my opinion, no. I'm in the Atlanta, GA area. It gets pretty warm here too. I've done quite a bit of work in a community of homes of similar design with the disappearing stairs in the garage. it's quite common to see the stairs open (not extended) and the garage door opened about a foot or so for ventalation. This actually Read More
First and foremost, are your stairs safe to use? In answer to your question, in my opinion, no. I'm in the Atlanta, GA area. It gets pretty warm here too. I've done quite a bit of work in a community of homes of similar design with the disappearing stairs in the garage. it's quite common to see the stairs open (not extended) and the garage door opened about a foot or so for ventalation. This actually allows fresh air in and helps cool the garage and attic in warm weather. Remember hot air rises. If it gets cold where you are and you're trying to heat the garage, I'd tell you to replace the stairs so it seals up. Then the insulator might be an option for you. Read Less
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Asked by
Connecticut
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Home Improvement Profile: DIYer
December 8, 2015
Answer: 
It would prevent air from going through the attic hatch. It sits on the frame to which the stairs are attached. That said, if the attic isn't heated or cooled, and the garage isn't heated or cooled, I'm not sure why you'd want to prevent the exchange of air between those two spaces. Normally, it'd be used for a hatch over a heated or cooled area to prevent the exchange of heated or cooled air and the Read More
It would prevent air from going through the attic hatch. It sits on the frame to which the stairs are attached. That said, if the attic isn't heated or cooled, and the garage isn't heated or cooled, I'm not sure why you'd want to prevent the exchange of air between those two spaces. Normally, it'd be used for a hatch over a heated or cooled area to prevent the exchange of heated or cooled air and the transfer of heat with the attic. But to answer your question directly, it would stop air exchange between your attic and garage, and it would reduce the exchange of heat between those two areas. Read Less
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December 7, 2015
Answer: 
I'd say it would not be helpful economically for your situation. That being sad, if your garage is very hot because of the door not closing, this will probably keep it a little bit cooler. For the price, try it. It's an easy product to return since it is only one piece.
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Asked by
New Jersey
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November 3, 2015
Answer: 
Yes, but you will need to seal up the gaps. This provides reasonable insulation, but it doesn't seal sell enough to stop air flow. You could try some thick door seal in combination with this to seal off your attic.
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Asked by
Scott Depot, Scott, WV 25560, USA
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November 3, 2015
Answer: 
This product is used to keep your conditioned space from escaping into an un-conditioned space by trapping and or blocking the air from getting past it. But if you wanted to use it the other way around, it would work just the same. I'm still trying to understand why unconditioned attic air getting into your unconditioned garage would be a concern? Unless I'm not quite understanding what your trying to Read More
This product is used to keep your conditioned space from escaping into an un-conditioned space by trapping and or blocking the air from getting past it. But if you wanted to use it the other way around, it would work just the same. I'm still trying to understand why unconditioned attic air getting into your unconditioned garage would be a concern? Unless I'm not quite understanding what your trying to say. Read Less
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Asked by
Pepperell, MA
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October 16, 2015
Answer: 
We use this inside for the same reason. The attic stairs don't quite close, and even if they did, they aren't sealed. We purchased this and it has made a huge difference! The house will be cool in the summer, even though it is HOT in the attic and the heat loss to the attic in the winter is far, far less. I suspect it would help keep your garage cooler by trapping the warmer air in the attic, thereby Read More
We use this inside for the same reason. The attic stairs don't quite close, and even if they did, they aren't sealed. We purchased this and it has made a huge difference! The house will be cool in the summer, even though it is HOT in the attic and the heat loss to the attic in the winter is far, far less. I suspect it would help keep your garage cooler by trapping the warmer air in the attic, thereby keeping the house cooler by having cooler air in the garage even though it is not insulated. We definitely found this product well worth the money. Read Less
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Asked by
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October 15, 2015
Answer: 
Unfortunately, without physically being able to inspect your situation, I cannot determine if this product would fix your problem. It would be up to you to determine if the dimensions of this product would properly seal your stair opening. The dimensions of this product are 25 1/2" x 54", and it is designed to insulate an attic stair access point. If you have any further questions, please feel free to Read More
Unfortunately, without physically being able to inspect your situation, I cannot determine if this product would fix your problem. It would be up to you to determine if the dimensions of this product would properly seal your stair opening. The dimensions of this product are 25 1/2" x 54", and it is designed to insulate an attic stair access point. If you have any further questions, please feel free to contact a representative at your local Home Depot ProDesk and they will be happy to assist you. Or you can call 1-800-HOME-DEPOT (1-800-466-3337) and a someone will be happy to assist you as well. Thank you for your inquiry! Read Less
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Customer Reviews

Rated 4.3 out of 5 by 235 reviewers.
Rated 5.0 out of 5.0 by Attic Tent The product is easy to set up. A few supports such as on a pup tent would be helpful. August 30, 2016
Rated 1.0 out of 5.0 by Poor design The insulator covered the access hole, but when the folding ladder closed, it pushed the insulation up, resulting in a large gap. It would have worked if it had been box shaped vs triangle shaped. August 9, 2016
Rated 4.0 out of 5.0 by Great purchase It is a good product for people looking for ways to save money on energy cost. August 2, 2016
Rated 5.0 out of 5.0 by Attic Stair Insulator The attic stair insulator has made a huge difference in the hallway where our drop-down staircase is located. I had no idea so much heat was leaking down into the living space of our home. Next month I look forward to seeing our power bill. It should show a nice drop. August 2, 2016
Rated 4.0 out of 5.0 by Good product KeepsthehotAirinthe attic. Thedifference is significant August 2, 2016
Rated 5.0 out of 5.0 by Great investment It's works better than expected. It really keeps the air separated. Perfect. Love it. Worth the money. July 26, 2016
Rated 5.0 out of 5.0 by Nice Great product. Keeps heat in attic fits perfect for size stairwell July 19, 2016
Rated 5.0 out of 5.0 by great product very easy to install, no tools needed. what could be easier. July 26, 2016
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