Model # 52DD

Internet #202085962

Store SKU #307101

Store SO SKU #192627

Owens Corning FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
0748232100326

Owens Corning

FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing

  • Closed cell rigid foam board, easy to handle, cut and install
  • Compressive strength of 25 psi, R-value of 10
  • Lifetime Limited Warranty for the life of the home
$29.00 /each

Frequently Bought Together

Product Overview

FOAMULAR Extruded Polystyrene (XPS) Rigid Foam Insulation offers a comprehensive line of products in a wide choice of sizes, thicknesses and edges with a Lifetime Limited Warranty for the life of the home or building. The products are easy to handle, score, cut and install and no special tools are needed. Products can be used on wood, steel framing or concrete walls. FOAMULAR XPS resists moisture and retains R-value even after exposure to standing water and wet soil. Only XPS foam to be GREENGUARD Gold Certified and the first XPS foam certified by Scientific Certification Systems (SCS) to contain a minimum of 20% recycled content.

  • Dimensions: 2 in. x 48 in. x 8 ft.
  • Application: exterior foundation walls, under slab, foundations and crawlspaces
  • Designed to resist moisture and helps to block mildew
  • Has a higher R-value than wood fiber, plywood or 1/2 in. gypsum board products
  • Buying guide and insulation calculator:

    insulation buying guide
    Insulation 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

Details

Warranty / Certifications

More Products With These Features

Search

Customer Questions & Answers

29 Questions60 Answers

Customer Questions & Answers

FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing

Ask your questions. Share your answers.

 
 
Clear Search Term
 
 
Sort By:
 
6 answers

what is the r value of this product?

This question is from FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
Asked by
Hub
April 13, 2013
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (6)

Asked by
SE Mass
Read all my Q&A
April 5, 2015
Answer: 
R value is 12.2 for 2 inch thickness
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Salt Lake City, UT
Read all my Q&A
Home Improvement Profile: DIYer
March 29, 2015
Answer: 
R-5 per inch of thickness. So 2-inch Foamular would be R-10.
+2points
2out of 2found this answer helpful.
Was this helpful?helpful2unhelpful0

Asked by
Boston, MA
Read all my Q&A
Home Improvement Profile: DIYer
September 9, 2014
Answer: 
Dear Hub: If you are still looking for the R value of Foamular, it is 5 per inch. Foamular also retains its R value over time -- unlike fiberglass bats, for example.
I hope this is helpful.
Mark
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0

Asked by
Pittsburgh, PA, USA
Read all my Q&A
August 1, 2013
Answer: 
The Foamular products appear to have an R-Value of R-5.0 per Inch of thickness. IE: R-10 for the 2" product. Check the manufacturer's Website out for more information. I agree that Home Depot needs to list this information in the product description and the spec's.
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0

Asked by
Uniontown, OH
Read all my Q&A
July 1, 2013
Answer: 
the product as I read it said R5 per inch.. so in the attick consistent with Dr. Energy's how to guide, I intend to lay 2 sheets of 2 inch with long screws and washers and seal with spray nozzled foam and create boxes around each electrical unit. don't quote me, but I think atticks in ohio need r24 for the attick, so i'll be under by 4, so I may think on it a bit and make it 3.. will review data.
+1point
2out of 3found this answer helpful.
Was this helpful?helpful2unhelpful1

April 15, 2013
Answer: 
The Foamular 250 is R-5 per square inch.
+1point
2out of 3found this answer helpful.
Was this helpful?helpful2unhelpful1
 
4 answers

Is this product heat resistant?

This question is from FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
Asked by
Bucky
Cleveland, Georgia
August 26, 2013
I will be applying heat up to 300°F. Will this product withstand this much heat?
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (4)

Asked by
Salt Lake City, UT
Read all my Q&A
Home Improvement Profile: DIYer
March 29, 2015
Answer: 
According to Owens-Corning, this product has a maximum service temperature rating of 165 F, so this would not be recommended.
At least one study suggests that polystyrene degradation may begin as low as 200 C (392 F), but given the combustibility of this product, I wouldn't exceed the service temperature unless you know what you're doing--and if that were the case, you probably wouldn't be asking this Read More
According to Owens-Corning, this product has a maximum service temperature rating of 165 F, so this would not be recommended.
At least one study suggests that polystyrene degradation may begin as low as 200 C (392 F), but given the combustibility of this product, I wouldn't exceed the service temperature unless you know what you're doing--and if that were the case, you probably wouldn't be asking this question here. Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Boston, MA
Read all my Q&A
Home Improvement Profile: DIYer
September 11, 2014
Answer: 
As the Owens Corning rep stated, Foamular is flammable and definitely not suitable for use near sources of heat. The Owens Corning product data sheet is available online at:
http://www.foamular.com/assets/0/144/172/174/11b5f50a-0f80-4f08-bebe-71f4b6a9fdf7.pdf
Look closely at page 2 and you will find that the maximum recommended service temperature is only 165 degrees F. This highlights the flammability Read More
As the Owens Corning rep stated, Foamular is flammable and definitely not suitable for use near sources of heat. The Owens Corning product data sheet is available online at:
http://www.foamular.com/assets/0/144/172/174/11b5f50a-0f80-4f08-bebe-71f4b6a9fdf7.pdf
Look closely at page 2 and you will find that the maximum recommended service temperature is only 165 degrees F. This highlights the flammability of the product.
It is always a good idea to search for the MSDS (material safety data sheet) and technical product literature on a manufacturer's website -- for key information like this.
I hope this is helpful.
Mark Read Less
+4points
4out of 4found this answer helpful.
Was this helpful?helpful4unhelpful0

Asked by
Boston, MA
Read all my Q&A
Home Improvement Profile: DIYer
September 9, 2014
Answer: 
Dear Bucky: The answer depends on what you mean by "heat resistant".
> Foamular provides effective insulation, with an R value of 5 per inch.
> This polystyrene product is classified according to DIN4102 as a "B3" product, meaning highly flammable or "Easily Ignited." It should not be installed near sources of heat or flame, e.g. near a furnace or light fixture. In residential buildings, the IRC Read More
Dear Bucky: The answer depends on what you mean by "heat resistant".
> Foamular provides effective insulation, with an R value of 5 per inch.
> This polystyrene product is classified according to DIN4102 as a "B3" product, meaning highly flammable or "Easily Ignited." It should not be installed near sources of heat or flame, e.g. near a furnace or light fixture. In residential buildings, the IRC requires that foam board be covered by an ignition / thermal barrier, e.g. sheets of drywall. If you are looking for insulation that is not flammable, Roxul rock wool is a good solution - also sold by Home Depot.
I hope this is helpful,
Mark Read Less
+1point
1out of 1found this answer helpful.
Was this helpful?helpful1unhelpful0

August 27, 2013
Answer: 
Foamular is not heat resistant. It is flammable. Your application for this product is not recommended. Foamular must be covered by a 15 minute thermal barrier at all times.
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
 
4 answers

will work on concrete walls and how do you make it stick

This question is from FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
Asked by
big D
buffalo ny
February 23, 2013
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (4)

Asked by
Salt Lake City, UT
Read all my Q&A
October 30, 2013
Answer: 
The product can be attached directly to concrete using an adhesive intended for foam applications, such as Loctite PL 300.
+5points
5out of 5found this answer helpful.
Was this helpful?helpful5unhelpful0

Asked by
Pittsburgh, PA, USA
Read all my Q&A
August 1, 2013
Answer: 
Yes it will. Rigid Foam insulation is typically used under concrete slabs and on the exterior of basement or foundation walls. It can also be used on interiors, and against almost any substrate. See the manufacturer's website for installation instructions on your specific material. For concrete, it can be installed "Fully Adhered" (glued with Construction adhesive) or mechanically fastened, as you can Read More
Yes it will. Rigid Foam insulation is typically used under concrete slabs and on the exterior of basement or foundation walls. It can also be used on interiors, and against almost any substrate. See the manufacturer's website for installation instructions on your specific material. For concrete, it can be installed "Fully Adhered" (glued with Construction adhesive) or mechanically fastened, as you can see in the attached photograph. This means screws with big plastic washers that hold the panels in place. Read Less
User submitted photo
+11points
11out of 11found this answer helpful.
Was this helpful?helpful11unhelpful0

Asked by
Uniontown, OH, USA
Read all my Q&A
July 1, 2013
Answer: 
I watched the youtube video for the corningware system and happened on the foam made by them and because it was made by the same company I utilized it. I mounted top and bottom 2x4s to deck plastic "wood" on the floor. I used concrete screws to secure the plastic deck wood at the bottom into the floor. I secured at the top where the 2x6s rest at the top of brick and secured the 1 1/2 sheets behind them. Read More
I watched the youtube video for the corningware system and happened on the foam made by them and because it was made by the same company I utilized it. I mounted top and bottom 2x4s to deck plastic "wood" on the floor. I used concrete screws to secure the plastic deck wood at the bottom into the floor. I secured at the top where the 2x6s rest at the top of brick and secured the 1 1/2 sheets behind them. so I bleached the wall and sealed cracks inside and out took a good look at brick wall.. then I laid 1 1/2 inch foam against the wall, then I laid studs over foam every 16 inches flatside, then laid foam in between again totaling 3 inches, then drywall. again, the studs were screwed into the bottom plastic wood in 10 foot sections from the bottom.. got some help lifting 10' groups of studs into place right up under the ceiling and screwed the flat side placed 2x4s to the top 2 inch wood resting on the brick and under the floor beams. this is ONLY how I connected the studs and held in the foam. I hesitated putting screws into the brick so I hope it holds well. I had a hard enough time getting screws into the concrete flooring to secure the 10 foot section once I got it up and in position with predrilled holes. :) hope it helps. once my phone battery is up and running, I will edit and include some photos, but it's broke at present. I do not intend to place heavy items on the wall so it is mainly to hold the drywall and secure the foam I needed the studs. Read Less
-2points
1out of 4found this answer helpful.
Was this helpful?helpful1unhelpful3

February 25, 2013
Answer: 
It is acceptable to install Foamular on concrete walls. To attach the foamular you may use screws or a water based adhesive. However, it would be recommended that you clear your project with your local Building Code to make sure this application is acceptable in your area.
+6points
6out of 6found this answer helpful.
Was this helpful?helpful6unhelpful0
 
3 answers

I have a partially finished basement in my townhome. The owner used 2x2 studs, so I can't use reg...

This question is from FOAMULAR 250 2 in. x 48 in. x 8 ft. R-10 Scored Squared Edge Insulation Sheathing
Asked by
Read all my Q&A
October 27, 2016
I have a partially finished basement in my townhome. The owner used 2x2 studs, so I can't use regular fiberglass insulation as it would be squeezed too tight. There is a plastic vapor barrier covering the exterior wall, so I don't need anything with an additional vapor barrier. Can this product be used in the wall cavity for insulation behind the drywall and next to the plastic vapor barrier on the exterior concrete wall?
0points
0out of 0found this question helpful.
Was this helpful?helpful0unhelpful0

Answers (3)

Asked by
Massachusetts
Read all my Q&A
Home Improvement Profile: Professional
October 30, 2016
Answer: 
Dear ILoveBirds: Great questions! Yes, Foamular is ideal for this type of installation. Here are a few tips:

(1) Cut and cobble: That is the name for this way of filling stud bays with foam board insulation. It takes a bit more work, but the results cannot be matched by anything but spray foam. We used the 'cut and cobble' approach with the major remodel of a home along the shore in Massachusetts. (A
Read More
Dear ILoveBirds: Great questions! Yes, Foamular is ideal for this type of installation. Here are a few tips:

(1) Cut and cobble: That is the name for this way of filling stud bays with foam board insulation. It takes a bit more work, but the results cannot be matched by anything but spray foam. We used the 'cut and cobble' approach with the major remodel of a home along the shore in Massachusetts. (A photo is attached.)

(2) Air seal: Carefully seal all of the edges and joints, to block air leaks. DAP 230 is best for small gaps. The 'Windows and Doors' version of Great Stuff spay foam is good for larger gaps. Cut the pieces of foam board a bit loose; there is no need for a tight fit -- which you need to seal anyway.

(3) Heat: Foam board is flammable and should never be installed near any source, e.g. a wall heater, exhaust vent, etc.

(4) Water vapor and leaks: Foamular is ideal for basements, because it does not absorb water. It can be installed just as you described, next to the poly vapor barrier. If there is any chance of a water leak into your basement, also install DriCore panels on the floor before you install your new flooring. DriCore has a rubber layer on the bottom and channels for water to trickle through. This saved the new floor on one of our major remodels, when a window leaked unexpectedly. See: DriCore Model # CDGNUS750024024, Home Depot Internet #202268752 Store SKU #361018. Seal all of the joints and edges to block moisture / air leaks with DAP 230. Also make sure you have a drain for the water to run to, with a dry well and sump pump.

(5) Fire blocking: Also read up on fire blocking, which is required at the top of basement walls, stairs, etc. Do a Google search for "How to firestop your basement" from Contractor Kurt. Roxul rock wool is a good solution (also available at Home Depot). You can stuff it into the gap at the top of the wall, in the gap along the wall, and into the end of floor joist bays. Rock wool is much denser than fiberglass, molds kind of like clay, and stays where you put it.
I hope this is helpful.

Mark
Read Less
User submitted photo
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Read all my Q&A
October 28, 2016
Answer: 
Foamular can be used in a basement wall application. Typically, a vapor barrier would not be placed between the Foamular and the concrete wall. Check with your local building codes official for any vapor barrier requirements. 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 Read More
Foamular can be used in a basement wall application. Typically, a vapor barrier would not be placed between the Foamular and the concrete wall. Check with your local building codes official for any vapor barrier requirements. 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 someone will be happy to assist you as well. Thank you for your inquiry! Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0

Asked by
Salt Lake City, UT
Read all my Q&A
Home Improvement Profile: DIYer
October 28, 2016
Answer: 
Rigid insulation in general is a reasonable choice for this application, although it is a bit labor-intensive to cut to fit the inter-stud spaces. Also, this product is 2" thick, so I would suggest sourcing 1.5" thick insulation to match the 1.5" thickness of the 2x2 framing.
However, if the wall cavity you refer to is between the 2x2 framing and the exterior wall/vapor barrier, and you have at least Read More
Rigid insulation in general is a reasonable choice for this application, although it is a bit labor-intensive to cut to fit the inter-stud spaces. Also, this product is 2" thick, so I would suggest sourcing 1.5" thick insulation to match the 1.5" thickness of the 2x2 framing.
However, if the wall cavity you refer to is between the 2x2 framing and the exterior wall/vapor barrier, and you have at least 2" of thickness in that cavity, then I would say this is a fine choice for your application. Read Less
0points
0out of 0found this answer helpful.
Was this helpful?helpful0unhelpful0
2 3 »
  • 2016-10-30 T22:44:43.992-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_202085962, prod, sort_default
2 3 »
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 65ms
  • QUESTIONS, PRODUCT

Customer Reviews

Rated 4.6 out of 5 by 8 reviewers.
Rated 4.0 out of 5.0 by Exactly what I needed to insulate a shipping container floor Perfect for insulating a floor. Added plywood on top. Rigid and quiet. August 9, 2016
Rated 5.0 out of 5.0 by Installation tips for applying over sheathing. I used Bostich caps SBCAPS, plastic washers, on 3" exterior screws to hold insulation to sheathing. A medium to fine toothed carpenter's hand saw works great for long straight cuts. The "mineral wool insulation" saw (Husky?) is good for trimming and small cuts, but binds too much for the long cuts. December 26, 2014
Rated 5.0 out of 5.0 by Excellent insulation solution for interior and exterior -- with some installation tips We are working on a deep remodel of a home along the shore in Massachusetts. Built as a summer cottage in 1950, most of the walls had no insulation. To bring the home up to current code (required with a major remodel) and save money on heating and cooling, we used Owens Corning Formular to insulate the inside and outside. Here are a few tips: > Inside: All of the walls were open to the studs. Due to the project schedule, spray foam and packed cellulose were not options. So we filled the stud bays with Formular board using the "cut and cobble" method. Large pieces are easy to form by scoring with a knife and breaking the sheet across a sharp edge; small pieces and shapes were cut with a serrated blade. We sealed the gaps and edges with Great Stuff foam. (An important step -- don't skip it!) To nearly fill the 2 x 4 stud bays, we used two layers: 2" and 1". A couple of photos are attached. Verdict: this takes more time than spray foam or packed cellulose, but is a great solution for remodels and do-it-yourself projects. > Exterior: To eliminate the risk of condensation on the sheathing in winter, and boost insulation efficiency, we wrapped the entire house with 2" of Formular 250 board. New house wrap went on first, then the foam board. We used corrosion resistant Spax "washer head" screws to attach the foam board. The joints, gaps and holes were sealed with Great Stuff foam. (As noted above, this is an important step!) 1" x 3" pressure treated firring strips were added last (for the siding and trim) and attached to the sheathing with long corrosion resistant Deckmate screws. A photo is attached. Verdict: Formular foam board is a great exterior insulation and air-barrier solution for remodels and new construction, including walls and roofs. This thickness also blocks water vapor, to prevent rot. Note: Windows and doors in a remodel will be installed against the sheathing, and need to be trimmed out with external "extension jambs" -- to compensate for the thickness of the foam board on the outside. This is easy and almost unnoticeable. We used Azek / Veranda PVC trim board, which never rots and never needs to be painted. (If your trim color is white!) All of the products noted above are available at Home Depot. The result: 2" of foam board outside and 3" inside, all sealed with Great Stuff to prevent air leaks. The layer on the outside also eliminated most of the "thermal bridging" between the framing and the outside air. (Wood is a surprisingly good conductor.) The total R value is roughly 25. We installed all of this during the winter, and immediately noticed a major impact on heating costs -- even though the roof has not been insulated yet! I hope all of this detail is helpful! Mark June 13, 2014
Rated 5.0 out of 5.0 by beautiful stuff good product I used the 1 1/2 thickness between studs in basement and directly against the brick basement wall as is used in corningwares more elaborate basement lockin system which was out of my price league.. beautiful stuff.. easy to work with. basement is tight as a drum and warm with raised wood floor as well. I intend to use the stuff as mentioned in youtube video of Cleveland's Dr. energy saver to help upper floors be cooler as well. it's so hot up there, but I think it will be easier to work with and the job will go quickly with awesome results and family will sleep more comfortably. July 1, 2013
Rated 4.0 out of 5.0 by easy to put up Sturdy and easy to cut. The only problem I had was sticking to the concrete in places where the concrete wasn't smooth. Once back filled it didn't matter anyways. Definitely recommend to anyone building a new house due to how easy it was to put up before it was back filled. December 30, 2014
Rated 5.0 out of 5.0 by it worked well, the fact that it was scored meant I had to do very little cutting It installs easy and it was nice that it was scored, saved me a lot of cutting. October 21, 2014
Rated 5.0 out of 5.0 by Great features and easy to install. I feel this product is a must have for anybody. If your a Pro. or a d.i.y. weekender like me, this product will help you get the job done fast and easy. I've noticed a huge different in my cooling bill for my shop. light weight and easy to work with... clean up was a breeze. May 19, 2012
Rated 4.0 out of 5.0 by Very good product, R-Value For anyone who is looking to buy this product, its R-Value is R5 per 1 inch of thickness. That is so far the best I have seen. Good one. August 6, 2013
  • 2016-10-30 T20:52:57.152-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_8, tr_8
  • loc_en_US, sid_202085962, prod, sort_default
1-8 of 8
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 38ms
  • REVIEWS, PRODUCT