Model # 36L

Internet #100320356

Store SKU #409923

Store SO SKU #192627

Owens Corning FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing
0748232100036

Owens Corning

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing

  • Film faced for damage resistance, easy to handle, cut and install
  • Compressive strength of 15 psi, R-value of 3
  • Lifetime Limited Warranty for the life of the home
$1447 /each
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

Installation Options

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
  • Film faced for damage resistance, easy to handle, cut and install
  • Compressive strength of 15 psi, R-value of 3
  • Lifetime Limited Warranty for the life of the home
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 & 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 percent recycled content.
  • Dimensions: 1/2 in. x 4 ft. x 8 ft.
  • Application: Exterior above grade walls, underneath vinyl siding / claddings
  • Closed cell rigid foam board, 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

Product Overview

  • Film faced for damage resistance, easy to handle, cut and install
  • Compressive strength of 15 psi, R-value of 3
  • Lifetime Limited Warranty for the life of the home
Model #: 36L
Sku #: 409923
Internet #: 100320356

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 & 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 percent recycled content.

  • Dimensions: 1/2 in. x 4 ft. x 8 ft.
  • Application: Exterior above grade walls, underneath vinyl siding / claddings
  • Closed cell rigid foam board, 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

Info & Guides

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

Customers Also Compared These

Price
$9.58 /each
$13.76 /each
$19.48 /each
$19.74 /each
Name Rmax Plus-3 1/2 in. x 4 ft. x 8 ft. R-3.2 Polyisocyanurate Rigid Foam Insulation Board FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing FOAMULAR 150 1 in. x 4 ft. x 8 ft. R-5 Scored Square Edge Insulating Sheathing Rmax Thermasheath-3 1 in. x 4 ft. x 8 ft. R-6 Polyisocyanurate Rigid Foam Insulation Board
Brand R-Matte Owens Corning Owens Corning Thermasheath
Ratings (41) (20) (33) (17)
Sheathing Type ISO XPS XPS ISO
Product Width (in.) 48 48 48 48
Product Length (ft.) 8 ft 8 ft 8 8 ft
Insulation R-Value 3.2 3 5 6
Faced or Unfaced Faced Unfaced Faced
Insulation Application Type 2x4 Walls,2x6 Walls,Attics,Basements,Ceilings,Crawlspaces,Exterior Sheathing,Garage,Re-Siding 2x4 Walls,2x6 Walls,Exterior Sheathing 2x4 Walls,2x6 Walls,Exterior Sheathing 2x4 Walls,2x6 Walls,Ceilings,Exterior Sheathing,Garage
Product Thickness (in.) .5 in .5 in 1 1 in
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
0.5
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Exterior Sheathing
Insulation R-Value
3
Insulation Type
Sheathing
Interior/Exterior
Exterior
Product Weight (lb.)
2.7lb
Sheathing Type
XPS
Structural
No

Warranty / Certifications

Warranty Information
Lifetime Limited

Specifications

Dimensions

Product Depth (in.)
0.5
Product Height (in.)
96
Product Length (ft.)
8 ft
Product Thickness (in.)
.5 in
Product Width (in.)
48

Details

Faced or Unfaced
Faced
Insulation Application Type
2x4 Walls,2x6 Walls,Exterior Sheathing
Insulation R-Value
3
Insulation Type
Sheathing
Interior/Exterior
Exterior
Product Weight (lb.)
2.7lb
Sheathing Type
XPS
Structural
No

Warranty / Certifications

Warranty Information
Lifetime Limited

Questions & Answers

Can it be installed before insulation and drycwall on remidel home.

We are doing a remodel. Can we put this up between studs before we install the insulation and dry wall ?
Asked by: Okie
It is meant to be placed under siding on the outside of the plywood. It is just extra insulation. Not meant for in between studs.
Answered by: Paulette
Date published: 2018-01-06

is there print on both sides?

is there print on both sides?
Asked by: jim
No, there is a thin film that peels off.
Answered by: Steelercountry
Date published: 2018-03-09

I am using this product on my concrete basement walls. Does it matter which side goes against the wall?

Asked by: R61457
Hello, When installing the Foamular, it does not matter which side goes against the wall. I would recommend installing the printed side towards the living space just in case you would need to locate which product or size is installed down the road.
Answered by: owenscorningProductExpert
Date published: 2018-03-13

What type of sealant is recomended for this insulation?

I see that the JointSealR tape is recomended for sealing joints between the boards. Is there a recomended “caulk” type sealant to be used around penetrations, at edges, etc.?
Asked by: Detroiter
Low-expansion spray foam such as "Great Stuff" works well since the gaps tend to be a little large for caulking. But if you have caulkable joints, I would use the water-based type, as the solvents in a petroleum-based caulk could compromise XPS.
Answered by: JeremyR
Date published: 2018-01-09
  • y_2018, m_4, d_25, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_127
  • loc_, sid_100320356, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 20ms
  • QUESTIONS, PRODUCT

Customer Reviews

FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing is rated 4.3 out of 5 by 20.
Rated 5 out of 5 by from The Owens Corning Foamular 1/2 in. x 4 ft. x... The Owens Corning Foamular 1/2 in. x 4 ft. x 8 ft. R-3 Squared Edge Insulating Sheathing is a great product, we went with the thinner sheathing to maximize space on the basement walls square footage. Easy to install and cut. Would highly recommend!
Date published: 2018-01-11
Rated 4 out of 5 by from Overall product is as advertised. Only two complaints, one with... Overall product is as advertised. Only two complaints, one with product, one with Home Depot. Vapor barrier on product was peeling away at edges on most boards. This is not carried at all Home Depots. Had to drive to get this from Depot that stocked it, ship to my store not an option.
Date published: 2018-04-18
Rated 2 out of 5 by from It doesn’t insulate the walls trust me what I’m talking... It doesn’t insulate the walls trust me what I’m talking about is the difference between this and the original installations material it’s much better than this
Date published: 2018-04-17
Rated 5 out of 5 by from It’s foam board what is there to say? Cuts easily... It’s foam board what is there to say? Cuts easily with a sharp knife and serves its purpose.
Date published: 2018-04-17
Rated 4 out of 5 by from It’s could be better with connection between and more sizes... It’s could be better with connection between and more sizes options.
Date published: 2017-12-06
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2018-02-21
Rated 1 out of 5 by from 1 Star Review Rating provided by a verified purchaser
Date published: 2018-02-03
Rated 5 out of 5 by from Yes. Worked great for what we needed.... Yes. Worked great for what we needed.
Date published: 2018-01-31
  • y_2018, m_4, d_25, h_7
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_20
  • loc_, sid_100320356, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 15ms
  • REVIEWS, PRODUCT