Owens Corning Attic Stair Insulator II 25-1/2 in. x 54 in.-AS2 - The Home Depot

Owens Corning

Model # AS2

Internet # 100676399

Store SKU # 554355

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

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

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

$53.95 / each
  • No assembly required, unfold and place over the stairway opening
  • Lightweight, provides comfort for your home year-round
  • Greenguard certified


Model # AS2

Internet # 100676399

Store SKU # 554355

Store SO SKU # 583042

This easy to install insulator closes the insulation gap created by attic stair access, helping to reduce energy costs year round. Insulator is comprised of a durable, Pink Fiberglas Insulation and tough, highly reflective foil.

  • Available in one standard size to fit most attic stairwell openings
  • The product is designed to cover access points up to 25 1/2 in. x 54 in.
  • The product comes fully assembled and is easy to install & remove
  • The product is R-10 rated and helps reduce energy loss year round
  • GREENGUARD Certified

Info & Guides

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Assembled Depth (in.)  54 in  Assembled Height (in.)  25.5 in 
Assembled Width (in.)  24 in 
Insulation Type  Accessory  Returnable  90-Day 
Warranty / Certifications
ENERGY STAR Certified  Yes  Warranty Information  N/A 


Rated 4.2 out of 5 by 151 reviewers.
Rated 4 out of 5 by Simple design that I will improve I recently had an energy audit conducted and found that the worst performing area of my home was the hatch leading to the attic. It was suggested that I purchase an insulating cap to help conserve heat/AC. Looking around there were some expensive options. I ended up purchasing this. My one concern is that the bottom of the cap is exposed insulation. I have to drag the cap over some plywood and I don't want it to catch on anything. The one change I am going to add is some strips of duct tape over the bottom to protect the insulation. I also purchased a new wireless thermostat that is fantastic! November 6, 2012
Rated 5 out of 5 by Great product to knock the edge off heat or cold Not having a ridge vent in my roof, my attic would get very hot in the summer and also very cold in the winter. I bought the stair insulator to see if it would help and it did. I was surprised the first time I pulled down my attic stairs and popped my head up there. While under the Attic Insulator it felt about the same temp as my upstairs. Once I pushed it up to access my attic I could feel the rush of very cold air (this was in the winter time) come out of the attic. I'm not sure how much I saved in power bills, but there was a real difference in the ambient temperature directly below my attic stairs after I installed this product. July 21, 2014
Rated 4 out of 5 by Built a frame for support Essentially foil-faced insulation on both sides in the form of a pup tent. After reading some of the reviews, I made 2 improvements: (1) I had some foil tape and used it on the open ends to help add rigidity and (2) built a little frame out of 1/2" pvc pipe. The pvc rests in the frame of the staircase and just high enough to hold up the insulation but not lift if from making contact with surrounding wood. November 13, 2011
Rated 5 out of 5 by Easy solution - only solution What I liked about this product was how easy the project was. Took it out of the box and done! This fits well over the stairway hole and most importantly it was THE ONLY solution I could find in a store. I saw some foil zip covers on-line at +$130 and also thought about making one from foam insulation but this product gave me an R-10 value for ~$50...to get this same R-value with Foam I was looking at ~$60 in material + time. July 17, 2014
Rated 4 out of 5 by Easy as pie to install, just make sure you get 4 sheets of insulation for the base. I hemmed and hawed over a way to take care of the awful draft that would creep around my attic door and render my house freezlng at night. I looked around at various caps and was confused by the measurements necessary and the tribulations necessary to custom fit them. Not for me. I am a single girl and I just want it fixed, now. This thing was SUPER easy to install. I just looked at pictures on the box and followed the pictures. I didn't have insulation surrounding my door, I had plywood floors, so when I bought this item I also bought 4 pieces of R30 insulation. Laid them in a square over the floor around the opening. Then opened the pup tent and just put it on top. I immediately felt a difference. It was like a thermal barrier. no cold comes down, no heat goes up. It is just a simple seal. And it cost me 37.00 Said 47.00 at the store, but the clerk met my request to meet the advertised price on Online. So that was easy. November 7, 2012
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