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Top Rated Board Insulation

38 results

R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

 

R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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4.6
814
Kingspan Insulation R- 5 , 1-in x 4-ft x 8-ft Unfaced Foam Board Insulation

Kingspan Insulation 

R- 5 , 1-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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4.7
152
Owens Corning FOAMULAR NGX F-150 R- 5 , 1-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation
Energy Star Qualified
Multiple Options Available

Owens Corning 

FOAMULAR NGX F-150 R- 5 , 1-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

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4.7
140
Kingspan Insulation R- 10 , 2-in x 4-ft x 8-ft Unfaced Foam Board Insulation

Kingspan Insulation 

R- 10 , 2-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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4.6
164
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GreenGuard R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation
Energy Star Qualified

GreenGuard 

R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

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4.7
290
ROCKWOOL Comfortboard 80 R- 6.3 , 1.5-in x 2-ft x 4-ft Unfaced Mineral wool with Sound Barrier Board Insulation
Energy Star Qualified

ROCKWOOL 

Comfortboard 80 R- 6.3 , 1.5-in x 2-ft x 4-ft Unfaced Mineral wool with Sound Barrier Board Insulation

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4.7
98
R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

 

R- 3.9 , 1-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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4.6
1024
R- 1.5-in x 4-ft x 8-ft Expanded polystyrene

 

R- 1.5-in x 4-ft x 8-ft Expanded polystyrene

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4.6
779
Owens Corning Foamular NGX Wall Panel R- 7.5 , 1.4-in x 1.1875-ft x 4-ft Unfaced Polystyrene with Sound Barrier Board Insulation

Owens Corning 

Foamular NGX Wall Panel R- 7.5 , 1.4-in x 1.1875-ft x 4-ft Unfaced Polystyrene with Sound Barrier Board Insulation

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4.7
10
R- 2.9 , 0.75-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

 

R- 2.9 , 0.75-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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4.6
945
Johns Manville AP Foil R- 9.3 , 1.5-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation
Energy Star Qualified
Multiple Options Available

Johns Manville 

AP Foil R- 9.3 , 1.5-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation

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4.6
343
Owens Corning FOAMULAR NGX F-150 R- 7.5 , 1.5-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation
Energy Star Qualified
Multiple Options Available

Owens Corning 

FOAMULAR NGX F-150 R- 7.5 , 1.5-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

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4.7
140
Owens Corning FOAMULAR NGX F-250 R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation
Energy Star Qualified
Multiple Options Available

Owens Corning 

FOAMULAR NGX F-250 R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

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4.7
140
STYROFOAM Residential Sheathing R- 3.9 , 0.78-in x 4-ft x 8-ft Faced Polystyrene Board Insulation
Energy Star Qualified

STYROFOAM 

Residential Sheathing R- 3.9 , 0.78-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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4.8
50
Johns Manville AP Foil R- 2.9 , 0.5-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation
Energy Star Qualified
Multiple Options Available

Johns Manville 

AP Foil R- 2.9 , 0.5-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation

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4.6
343
Johns Manville AP Foil R- 6.0 , 1.0-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation
Energy Star Qualified
Multiple Options Available

Johns Manville 

AP Foil R- 6.0 , 1.0-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation

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4.6
311
Kingspan Insulation Q250 Fanfold Siding Underlayment R- 0.9 , 0.2-in x 4-ft x 48-ft Faced Foam Board Insulation

Kingspan Insulation 

Q250 Fanfold Siding Underlayment R- 0.9 , 0.2-in x 4-ft x 48-ft Faced Foam Board Insulation

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4.6
35
Johns Manville AP Foil R- 13.0 , 2.0-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation
Energy Star Qualified
Multiple Options Available

Johns Manville 

AP Foil R- 13.0 , 2.0-in x 4.0-ft x 8.0-ft Faced Polyisocyanurate Board Insulation

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4.6
343
Kingspan Insulation GreenGuard Fanfold Residing Underlayment R- 1 , 4-ft x 50-ft Faced Polystyrene Board Insulation
Energy Star Qualified

Kingspan Insulation 

GreenGuard Fanfold Residing Underlayment R- 1 , 4-ft x 50-ft Faced Polystyrene Board Insulation

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4.6
124
Owens Corning FOAMULAR NGX Sheathing R- 3 , 0.5-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation
Energy Star Qualified
Multiple Options Available

Owens Corning 

FOAMULAR NGX Sheathing R- 3 , 0.5-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

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4.7
140
STYROFOAM Unsheathed R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation
Energy Star Qualified

STYROFOAM 

Unsheathed R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

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5.0
4
Owens Corning FOAMULAR NGX Project Panel R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation
Energy Star Qualified

Owens Corning 

FOAMULAR NGX Project Panel R- 5 , 1-in x 2-ft x 2-ft Unfaced Foam Board Insulation

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5.0
1
Kingspan Insulation GreenGuard Unfaced XPS Foam Board Insulation R- 7.5 , 1.5-in x 4-ft x 8-ft Unfaced Foam Board Insulation

Kingspan Insulation 

GreenGuard Unfaced XPS Foam Board Insulation R- 7.5 , 1.5-in x 4-ft x 8-ft Unfaced Foam Board Insulation

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4.8
5
HALO GPS R- 5 , 1.063-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

 

HALO GPS R- 5 , 1.063-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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4.7
17

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Related Products

Rigid Board Insulation R- 5 , 1.125-in x 4-ft x 2-ft Faced Polystyrene Board Insulation

SilveRboard   Rigid Board Insulation R- 5 , 1.125-in x 4-ft x 2-ft Faced Polystyrene Board Insulation

SilveRboard -R5 graphite wall insulation kit -(11 sheets - 1.125in x 2ft. x 4ft) with a total surface area of 88 sq.ft SBGXS (SilveRboard graphite breathable exterior sheathing) foam is laminated with a reflective film on both sides increasing board strength and flexibility, reducing site damage and waste. The reflective laminated surfaces are micro perforated giving the panel high water vapor permeance greatly reducing the likelihood of trapped moisture through the increased drying potential. The laminated film helps improve job site efficiency and reduce labor install costs.

703 Series R- 8.7 , 2-in x 2-ft x 4-ft Faced Fiberglass with Sound Barrier Board Insulation

Owens Corning   703 Series R- 8.7 , 2-in x 2-ft x 4-ft Faced Fiberglass with Sound Barrier Board Insulation

Owens Corning® Types 703 Series® Fiberglas Insulation™ Boards are made of inorganic glass fibers with a thermosetting resin binder and formed into semi-rigid or rigid boards.

Unsheathed R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

STYROFOAM   Unsheathed R- 10 , 2-in x 4-ft x 8-ft Unfaced Polystyrene Board Insulation

DuPont Styrofoam Brand Square Edge Extruded Polystyrene (XPS) Foam Insulation is an extruded polystyrene foam (XPS) insulation board that provides continuous insulation over steel stud or wood framing, in masonry unit cavity walls, and meets the needs of the commercial foundation and building floor slab needs. It can also be used for attics, foundations/slabs and craw spaces in residential applications.

R- 1.9 , 0.5-in x 2-ft x 4-ft Faced Expanded polystyrene Board Insulation

Insulfoam   R- 1.9 , 0.5-in x 2-ft x 4-ft Faced Expanded polystyrene Board Insulation

With the highest R-value per dollar over any other rigid insulation, consider Insulfoam Unfaced foam for your projects. Available in a wide range of sizes, Insulfoam’s rigid Unfaced foam can fit any roof, below-grade and wall insulation project needs.

Residential Sheathing Square Edge R- 3 , 0.55-in x 4-ft x 8-ft Faced Polystyrene with Sound Barrier Board Insulation

STYROFOAM   Residential Sheathing Square Edge R- 3 , 0.55-in x 4-ft x 8-ft Faced Polystyrene with Sound Barrier Board Insulation

Styrofoam Brand Residential Sheathing adds up to an investment that will pay for itself in just a few years, and continue to provide value for years to come. Using Residential Sheathing could lead to fewer callbacks resulting in an enhanced reputation for builders. Extruded polystyrene foam insulation like Residential Sheathing is inherently resistant to moisture, which can wreak havoc on other building materials. Moisture can compromise the performance of cavity insulation and damage drywall, wood framing and OSB or plywood sheathing.

R- 3.85 , 1-in x 2-ft x 4-ft Faced Polystyrene Board Insulation

Insulfoam   R- 3.85 , 1-in x 2-ft x 4-ft Faced Polystyrene Board Insulation

With the highest R-value per dollar over any other rigid insulation, consider Insulfoam Unfaced foam for your projects. Available in a wide range of sizes, Insulfoam’s rigid Unfaced foam can fit any roof, below-grade and wall insulation project needs.

Top-Rated Board Insulation for Lasting Home Comfort

Top-rated board insulation helps improve comfort, manage energy use and support long-term performance in walls, roofs and foundations. From rigid panels that add strength to options that resist moisture and mould, you’ll find solutions that match your project and climate. Explore the options available at Lowe’s.


Benefits of Top-Rated Board Insulation

  • Improved Energy Efficiency: Rigid board insulation adds continuous thermal protection that helps reduce drafts and temperature swings in finished and unfinished spaces.
  • Consistent Indoor Comfort: Using the right insulation type such as polystyrene or mineral wool helps keep rooms warmer in winter and cooler in summer.
  • Moisture Management: Water resistant panels limit moisture absorption around slabs, basements and exterior walls which helps protect adjacent building materials.
  • Mould Resistance: Many rigid products are mould resistant which supports healthier indoor air when installed in high-humidity or below-grade areas.
  • Versatile Applications: Foam board insulation and mineral wool boards work in stud bays, over sheathing, under siding or beneath concrete to meet residential and light commercial needs.
  • Durability Over Time: Dense panels resist settling and compression so the installed R-value stays closer to design performance year after year.

Key Features of Top-Rated Board Insulation

  • Multiple Material Choices: Choose from insulation type options including mineral wool, foam, polyisocyanurate and polystyrene board insulation to match code requirements and project goals.
  • Wide Range Of R-Values: Panels are available in different thicknesses so you can layer board insulation to reach target R-values in walls, roofs or foundations.
  • Moisture and Water Resistance: Many rigid foam products are water resistant which makes them suitable for foundation walls, under-slab use and other damp locations.
  • Easy-To-Cut Panels: Most rigid boards cut cleanly with common tools so you can trim pieces to fit around outlets, framing and mechanical penetrations.

How to Choose Top Rated Board Insulation

  • Define the Application: Decide whether you’re insulating exterior walls, basement walls, under a slab, an attic hatch or a roof deck since each area may favor a different insulation type.
  • Consider Moisture Exposure: In damp or below-grade locations prioritize water resistant or mould resistant boards to help protect framing and finishes.
  • Review Material Properties: Compare polystyrene, mineral wool, foam and cellulose boards for fire resistance, sound control, vapor permeability and compressive strength.
  • Check Compatibility with Other Layers: Ensure the rigid board works with house wraps, air barriers, cladding systems and interior finishes in your wall or roof assembly.

From insulating basement walls to adding continuous exterior sheathing, top-rated board insulation supports energy-conscious upgrades in new builds and renovations. Use it to help manage temperature, moisture and sound in living areas, garages and utility spaces. Shop now at Lowe’s.

Frequently Asked Questions