• icon-wishlist
  • icon-cart

Fiberglass (44)

Install fibreglass insulation for comfortable interiors. It has a low thermal conductivity to protect rooms from external temperatures, and works with other insulation such as membranes. The acoustic properties help protect privacy, and supporting acoustic insulation supplies are free of harmful chemicals. These building insulation supplies are durable and easy to shape. They are resistant to water, corrosion, and fire. Their surfaces also resist the growth of mould. Choose from blanket format or pre-cut pieces for convenient installation.
Fibreglass insulation increases energy efficiency by controlling loss of heat and keeping out the cold. Its plastic construction with tiny glass filaments and pure sand reinforcements increases the resistance to fire. Fibreglass is also resistant to mould and mildew. The insulation is easy to install, and some comes in blanket-like rolls suitable for long unobstructed spaces like attic joists. Pre-cut batts are easy to cut to size and install; their foam-like design enables them to friction fit between studs. Blown-in or loose designs are also suitable for irregular spaces, such as floors, attics, or walls. Other options include rigid boards to use between joists above basements or crawl spaces and ducts.

Flexible and soft fibreglass insulation is suitable for stapling between joists in the floor or rolling out between rafters in ceilings and attics. Options with high R-values (resistance values) have superior capabilities to restrict heat flow and are suitable for different applications. Insulation blankets also come in varying thicknesses and may have acoustic properties to reduce noise and fill empty spaces along walls, floors, and ceilings. Various building insulation products are free from potentially harmful substances such as formaldehyde, chlorofluorocarbon (CFCs), and brominated flame retardants, making them safe for home and commercial use. Eco-friendly insulation is made of recycled fibreglass and plastic materials to minimize environmental impact.

Foundation blankets insulate concrete basement floors and walls. They provide a continuous vapour barrier that also reduces air leaks around sills and header plates. Fibreglass insulation is available in packs of various sizes for renovation and new construction projects. Rona’s calculator tool can help estimate how much insulation to use for various projects. Consider installing rigid insulation such as those made from extruded polyethylene for use indoors or outdoors to act as vapour barriers in small insulation jobs and for packaging. Other construction supplies are also available including joists, hinges, and beams.
Johns Manville Fibreglass Building Insulation - R12 - 97.92-sq. ft. - Pack of 20 - 2 x 4 Walls and Wood Framing icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R12 - 97.92-sq. ft. - Pack of 20 - 2 x 4 Walls and Wood Framing
Format 15x47x3.5"
Details
Article #54835729
Johns Manville Fibreglass Building Insulation - R20 - 78.33-sq. ft. -  Pack of 16 - Attics and Floors icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R20 - 78.33-sq. ft. - Pack of 16 - Attics and Floors
Format 15x47x6"
Details
Article #54835728
Johns Manville Fibreglass Building Insulation - R20 - 120.11-sq. ft. - Pack of 16 - Attics and Floors icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R20 - 120.11-sq. ft. - Pack of 16 - Attics and Floors
Format 23x47x6"
Details
Article #54835730
Johns Manville Fibreglass Building Insulation - R12 - 150.14-sq. ft. - Pack of 20 - 2 x 4 Walls and Wood Framing icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R12 - 150.14-sq. ft. - Pack of 20 - 2 x 4 Walls and Wood Framing
Format 23x47x3.5"
Details
Article #54835732
Johns Manville Fibreglass Insulation - R40 - 48-sq. ft. - Pack of 6 - Walls and Attics icon-wishlist
Johns Manville Fibreglass Insulation - R40 - 48-sq. ft. - Pack of 6 - Walls and Attics
Format 24x48x11.25"
Details
Article #54835239
Sopra Cellulose Rigid Cardboard Vent for Ceiling and Attic Vents - 50 Pieces Covers 240.5-sq. ft. - 10.8 R-Value icon-wishlist
SOPREMA
Sopra Cellulose Rigid Cardboard Vent for Ceiling and Attic Vents - 50 Pieces Covers 240.5-sq. ft. - 10.8 R-Value
Format 27"xBX50
Details
Article #62115004
Johns Manville Fibreglass Building Insulation - R12 - 106.67-sq. ft. - Pack of 20 - Steel Stud Walls icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R12 - 106.67-sq. ft. - Pack of 20 - Steel Stud Walls
Format 16x48x3.5"
Details
Article #54835734
Johns Manville Fibreglass Insulation - R22 - 48.96-sq. ft. - Pack of 7 - 2 x 6 Walls and Wood Framing icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Insulation - R22 - 48.96-sq. ft. - Pack of 7 - 2 x 6 Walls and Wood Framing
Format 15x47x5.5"
Details
Article #54835725
Johns Manville Thermal-Resistant Insulation - R28 - 5.32-sq. ft. - Unfaced - Fibreglass - Formaldehyde-Free icon-wishlist
Johns Manville Thermal-Resistant Insulation - R28 - 5.32-sq. ft. - Unfaced - Fibreglass - Formaldehyde-Free
Format 16x48x8.5"
Details
Article #54835000
Johns Manville Fibreglass Insulation - Up to 78.33-sq.ft. - R14 - 16-pack icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Insulation - Up to 78.33-sq.ft. - R14 - 16-pack
Format 15x47"
Details
Article #21785000
Johns Manville Fibreglass Batt Insulation for Ceilings - R28 - 64-sq. ft. - Unfaced - Formaldehyde-Free icon-wishlist
Johns Manville Fibreglass Batt Insulation for Ceilings - R28 - 64-sq. ft. - Unfaced - Formaldehyde-Free
Format 24x48x8.5"
Details
Article #54835001
Johns Manville Formaldehyde-Free R31 Fibreglass Insulation Batts - Covers up To 8-sq. ft. - Ecologo Rated - Unfaced icon-wishlist
Johns Manville Formaldehyde-Free R31 Fibreglass Insulation Batts - Covers up To 8-sq. ft. - Ecologo Rated - Unfaced
Format 24x48x9.5"
Details
Article #34815010
Johns Manville Fibreglass Building Insulation - R20 - 85.33-sq. ft. - Pack of 16 - Walls and Floors icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Building Insulation - R20 - 85.33-sq. ft. - Pack of 16 - Walls and Floors
Format 16x48x6"
Details
Article #54835731
Johns Manville Fibreglass Insulation - Up to 42.66-sq. ft. - R31 - 8 Pieces icon-wishlist
Johns Manville Fibreglass Insulation - Up to 42.66-sq. ft. - R31 - 8 Pieces
Format 16x48x9.5"
Details
Article #34815009
Johns Manville Fibreglass Insulation Micro-Pak - 5-sq.ft. icon-wishlist
Johns Manville Fibreglass Insulation Micro-Pak - 5-sq.ft.
Format 15x48x2.5"
Details
Article #5483005
Johns Manville Fibreglass Insulation - R24 - 38.51-sq.ft. - Pack of 8 - 2 x 6 Walls and Wood Framing icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Insulation - R24 - 38.51-sq.ft. - Pack of 8 - 2 x 6 Walls and Wood Framing
Format 14.75x47x5.5"
Details
Article #54835726
Johns Manville R40 Crawlspace Fibreglass Insulation - Covers 32-sq. ft. - Unfaced - Formaldehyde-Free icon-wishlist
Johns Manville R40 Crawlspace Fibreglass Insulation - Covers 32-sq. ft. - Unfaced - Formaldehyde-Free
Format 16x48x11.5"
Details
Article #54835004
Johns Manville R12 Thermal Reducing Insulation Batts - Unfaced - 2.1 RSI - Use with 2 x 6 Walls icon-wishlist
JOHNS MANVILLE
Johns Manville R12 Thermal Reducing Insulation Batts - Unfaced - 2.1 RSI - Use with 2 x 6 Walls
Format 24x48x3.5"
Details
Article #54835753
Johns Manville Fibreglass Insulation - R22 - 75,08-sq.ft. - Pack of 10 - Walls and Floors icon-wishlist
JOHNS MANVILLE
Johns Manville Fibreglass Insulation - R22 - 75,08-sq.ft. - Pack of 10 - Walls and Floors
Format 23x47x5.5"
Details
Article #54835727
CertainTeed R12 Beige Insulating Wool in Fibre Glass - 3.5-in x 15-in x 47-ft 117.5 sq.ft. icon-wishlist
CERTAINTEED
CertainTeed R12 Beige Insulating Wool in Fibre Glass - 3.5-in x 15-in x 47-ft 117.5 sq.ft.
Format 3.5x15x47"
Details
Article #00495021
Johns Manville R35 Fibreglass Insulation - 8-sq. ft. - Unfaced - Formaldehyde-Free - Install in Ceilings icon-wishlist
Johns Manville R35 Fibreglass Insulation - 8-sq. ft. - Unfaced - Formaldehyde-Free - Install in Ceilings
Format 24x48x10.5"
Details
Article #54835003
Certainteed R20 Beige Insulating Wool in Fibreglass - 6-in x 23-in x 47-ft 105.1 sq.ft. icon-wishlist
CERTAINTEED
Certainteed R20 Beige Insulating Wool in Fibreglass - 6-in x 23-in x 47-ft 105.1 sq.ft.
Format 6x23x47"
Details
Article #00495020
Johns Manville Climate Pro Fibreglass Blow-In-Wool - 45.4 sq.ft. Coverage at R40 icon-wishlist
JOHNS MANVILLE
Johns Manville Climate Pro Fibreglass Blow-In-Wool - 45.4 sq.ft. Coverage at R40
 
Details
Article #21785007
Johns Manville Unfaced Fibreglass Insulation Batts for Crawlspaces - 12 R-Value - 8-in Thick - 153.3-sq. ft. icon-wishlist
Johns Manville Unfaced Fibreglass Insulation Batts for Crawlspaces - 12 R-Value - 8-in Thick - 153.3-sq. ft.
Format 11.5x48x3.5"
Details
Article #54835905
CertainTeed Fibreglass Insulation - Up to 135.13-sq. ft. - R12 - 18-pack icon-wishlist
CertainTeed Fibreglass Insulation - Up to 135.13-sq. ft. - R12 - 18-pack
Format 23x47x3.5"
Details
Article #00495003
Frost King 12-in x 2-in x 15-ft Duct Insulation icon-wishlist
FROST KING
Frost King 12-in x 2-in x 15-ft Duct Insulation
Format 12x2"x15'
Details
Article #30737860
Johns Manville R8 Fibreglass Insulation Batts for Walls - Friction Fit - Unfaced - Formaldehyde-Free icon-wishlist
Johns Manville R8 Fibreglass Insulation Batts for Walls - Friction Fit - Unfaced - Formaldehyde-Free
Format 15x48x2.5"
Details
Article #34815000
Frost King 1-in x 1/8-in x 15-ft Duct Insulation icon-wishlist
FROST KING
Frost King 1-in x 1/8-in x 15-ft Duct Insulation
Format 1x1/8"x15'
Details
Article #30738681
CertainTeed R31 Insulating Wool in Beige Fibreglass - 9.5-in x 24-in x 48-ft 64 sq.ft. icon-wishlist
CERTAINTEED
CertainTeed R31 Insulating Wool in Beige Fibreglass - 9.5-in x 24-in x 48-ft 64 sq.ft.
Format 24x48x9 1/2"
Details
Article #00495007
Frost King 3-in x 1-in x 25-ft Pipe Wrap Insulation icon-wishlist
FROST KING
Frost King 3-in x 1-in x 25-ft Pipe Wrap Insulation
Format 3x1"x25'
Details
Article #30737861
Johns Manville Thermal Floor and Basement Batt Insulation - 12 R-Value - 128-sq. ft. - Unfaced - Fibreglass icon-wishlist
Johns Manville Thermal Floor and Basement Batt Insulation - 12 R-Value - 128-sq. ft. - Unfaced - Fibreglass
Format 24x48x9.6"
Details
Article #54835907
Johns Manville R20 Fibreglass Batt Insulation - 11.5-in W x 48-in L - 84.33-sq. ft. -  Unfaced - 8-in Thick icon-wishlist
Johns Manville R20 Fibreglass Batt Insulation - 11.5-in W x 48-in L - 84.33-sq. ft. - Unfaced - 8-in Thick
Format 11.5x48x8"
Details
Article #54835906
CertainTeed Fibreglass Insulating Wool R24 - 5.5-in x 14.75-in x 47-ft - 33.7 sq.ft. icon-wishlist
CERTAINTEED
CertainTeed Fibreglass Insulating Wool R24 - 5.5-in x 14.75-in x 47-ft - 33.7 sq.ft.
Format 5.5x14.75x47"
Details
Article #00495017
Johns Manville R20 Sound Attenuating Insulation - Fibreglass - Covers 101.3-sq. ft. - Formaldehyde-Free icon-wishlist
JOHNS MANVILLE
Johns Manville R20 Sound Attenuating Insulation - Fibreglass - Covers 101.3-sq. ft. - Formaldehyde-Free
Format 19x48x6"
Details
Article #54835733
TLP Foundation Blanket R-20 - 4-ft x 35-ft icon-wishlist
TLP Foundation Blanket R-20 - 4-ft x 35-ft
Format 4x35'
Details
Article #84725001
Johns Manville R20 Fibreglass Insulation Batts - Sound Barrier - 63.3-sq. ft. - 5.5-in Thick for 2 x 4 Walls icon-wishlist
Johns Manville R20 Fibreglass Insulation Batts - Sound Barrier - 63.3-sq. ft. - 5.5-in Thick for 2 x 4 Walls
Format 19x48" 63.3SF
Details
Article #54835009
Johns Manville Fibreglass Insulation Pack - Up to 75.06-sq. ft. - R20 - 10-pack icon-wishlist
Johns Manville Fibreglass Insulation Pack - Up to 75.06-sq. ft. - R20 - 10-pack
Format 23x47x6"
Details
Article #34815005
Johns Manville Fibreglass Insulation - 96 sq.ft. - R12 icon-wishlist
Johns Manville Fibreglass Insulation - 96 sq.ft. - R12
Format 16x48" 106.7SF
Details
Article #34815013
Johns Manville Attic and Ceiling Insulation - Fibreglass - R22 - Sound Attenuating - Unfaced icon-wishlist
Johns Manville Attic and Ceiling Insulation - Fibreglass - R22 - Sound Attenuating - Unfaced
Format 23x47" 52.55SF
Details
Article #54835006
Johns Manville R8 Fibreglass Insulation - 48 in L x 22 3/4-in W x 3 1/2-in L icon-wishlist
Johns Manville R8 Fibreglass Insulation - 48 in L x 22 3/4-in W x 3 1/2-in L
 
Details
Article #54835012
Johns Manville Formaldehyde-Free Fibreglass Batt Insulation - 20 R-Value - 6-in Thick for 2 x 6 Stud Walls and Basements icon-wishlist
Johns Manville Formaldehyde-Free Fibreglass Batt Insulation - 20 R-Value - 6-in Thick for 2 x 6 Stud Walls and Basements
Format 6x15x48"
Details
Article #54835018
TLP Foundation Blanket - 48-in x 50-in - R-12 icon-wishlist
TLP Foundation Blanket - 48-in x 50-in - R-12
Format 48"x50'
Details
Article #40965144
Owens Corning Multi-Purpose Fibreglass Insulation - 5.33-sq. ft. - Pink icon-wishlist
Owens Corning Multi-Purpose Fibreglass Insulation - 5.33-sq. ft. - Pink
Format 2x15x48"
Details
Article #76135014
Johns Manville Formaldehyde-Free Fibreglass Insulation - 89.1-sq. ft. - Unfaced - Sound Barrier - 13 R-Value icon-wishlist
Johns Manville Formaldehyde-Free Fibreglass Insulation - 89.1-sq. ft. - Unfaced - Sound Barrier - 13 R-Value
Format 22 3/4x47x3.5"
Details
Article #34815008