10 Best Insulation For Crawl Spaces 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing 186 products, scanning 930 reviews, spending more than 36 hours of research and speaking with our test users, we think the 500sqft NASATECH (6 Mil Reinforced Scrim) White/Foil (Waterproof) Vapor Barrier is the one of the Best Insulation For Crawl Space on the market.

# Image Name Brand Price
1
⭐Best Choice
500sqft NASATECH (6 Mil Reinforced Scrim) White/Foil (Waterproof) Vapor Barrier
500sqft NASATECH (6 Mil Reinforced Scrim) White/Foil (Waterproof) Vapor Barrier 4ft x 125ft Encapsulation Pier Wrap Crawlspace Insulation (White/Foil) Solid Super Strong Reinforced Scrim Check price US Energy Products $$$$$ Check price
2 1000 sqft of Super Shield Reflective Radiant flooring 1000 sqft of Super Shield Reflective Radiant flooring, Sauna, Roof, crawlspace Insulation (4ft x 250ft) SOLID VAPOR Barrier Check price US Energy Products $$$$$ Check price
3
👑Premium Pick
RadiantGUARD Reflex-AIR Double Bubble Reflective Foil Insulation Thermal Barrier (500
RadiantGUARD Reflex-AIR Double Bubble Reflective Foil Insulation Thermal Barrier (500 sq ft roll | 48-inch X 125-feet) Bubble Insulation for Metal Building, Pole Barn, Basement, Crawlspace & More Check price RadiantGUARD $$$$$ Check price
4
💲Best value for the money
Blue Summit Supplies Vapor Barrier Tape
Blue Summit Supplies Vapor Barrier Tape, PE 9mm Polyethylene Tape Sealing Moisture Barrier Seam and Seal Tape for Crawl Space or Marine Use, Waterproof White 9 Mil Poly Tape, 3.78 Inch, 180 Foot Roll Check price Blue Summit Supplies $$$$$ Check price
5 1" Vapor Barrier Christmas Tree Fasteners for Crawl Space Moisture 1" Vapor Barrier Christmas Tree Fasteners for Crawl Space Moisture Barriers and Encapsulations (100 count) Check price Crawl Space Door Systems $$$$$ Check price
6 RadiantGUARD Reflex-AIR White Double Bubble Reflective Foil Insulation Thermal Barrier RadiantGUARD Reflex-AIR White Double Bubble Reflective Foil Insulation Thermal Barrier (500 sq ft roll | 48-inch X 125-feet) Bubble Insulation For Metal Building, Pole Barn, Crawlspace & More by RadiantGUARD Check price RadiantGUARD $$$$$ Check price
7 US Energy Products 1000 sqft (4x250) Solid White Crawlspace Flooring US Energy Products 1000 sqft (4x250) Solid White Crawlspace Flooring Underlayment Vapor Barrier DIY Insulation Weatherization Water Proof/Meets Fire Codes/Made in USA Check price MWS $$$$$ Check price
8 1000 sqft (4x250) Solid White Vapor Barrier Attic Foil White 1000 sqft (4x250) Solid White Vapor Barrier Attic Foil White Radiant Barrier Reflective Solid Insulation 4x250ft Non Perforated Woven Polyethylene Scrim Heavy Duty Check price US Energy Products $$$$$ Check price
9 Crawl Space Recessed Foundation Vent Cover Crawl Space Recessed Foundation Vent Cover - Black (For 8"x16" Foundation Openings) Check price Crawl Space Door Systems $$$$$ Check price
10 Durablow MFB M2D-S430 Air-Out Stainless Steel 430 Crawl Space Foundation Durablow MFB M2D-S430 Air-Out Stainless Steel 430 Crawl Space Foundation Dual Fans Ventilator + Built-in Dehumidistat + Freeze protection Thermostat + Radon Mitigation Check price Durablow $$$$$ Check price

500sqft NASATECH (6 Mil Reinforced Scrim) White/Foil (Waterproof) Vapor Barrier – Best Overall Insulation For Crawl Space

500sqft NASATECH (6 Mil Reinforced Scrim) White/Foil (Waterproof) Vapor Barrier
  • 4ft x 125ft (500sqft) Solid White Vinyl Side / Foil Side Super Duty Waterproof / Heavy Duty Scrim
  • Corrosive resistant / wont oxidize / waterproof / heavy duty commercial and residential
  • UV Inhibitor added / Eliminates “Black-Globe-Effect” / Allows for easier and quicker installation.
  • Includes all of the same benefits and advantages as a traditional radiant barrier with the solid white coating
  • Made in USA / SHIPS from USA

1000 sqft of Super Shield Reflective Radiant flooring

1000 sqft of Super Shield Reflective Radiant flooring
  • 1000 SQUARE FEET of radiant barrier insulation: Roll is 48 in. wide x 250 ft. long of non-breathable (non-perforated) double-sided aluminum insulation that can be used as a vapor barrier.
  • Used as flooring underlayment, roofs unlaymant, saunas, any need for a vapor barrier
  • SUPERIOR HEAT CONTROL: Radiant Barrier can lower attic temperatures up to 50 degrees during days of extreme heat.
  • SUPERIOR STRENGTH & DURABILITY: This is an 8mil Super Strong Radiant Barrier classified as an industrial grade product that will not tear or puncture but cuts easily with a razor knife or scissors.
  • DEFENSE AGAINT OXIDATION AND CORROSION: This Radiant Barrier is waterproof and also adds corrosion and oxidation protection to maximize it’s lifespan.

RadiantGUARD Reflex-AIR Double Bubble Reflective Foil Insulation Thermal Barrier (500 – Premium Pick

RadiantGUARD Reflex-AIR Double Bubble Reflective Foil Insulation Thermal Barrier (500
  • INTENDED USE: Insulating metal buildings, storage sheds, pole barns, and radiant floor heating.
  • SIZE: 500 square feet roll (48 inch wide by 125 linear feet). THICKNESS: 5/16 inch nominal. WEIGHT: 32 pounds. Puncture / Tear resistant. Will not compress or disintegrate.
  • CLEAN INSULATION: Non-toxic, non-carcinogenic, fiber free and does not promote growth of mold, mildew or fungus or provide nutritive value.
  • REDUCES condensation and BLOCKS radiant heat with high thermal R-Values.
  • FIRE RATING: Class A / Class 1 - Meets fire and smoke requirements for most local, state and federal building codes

Blue Summit Supplies Vapor Barrier Tape – Best Budget Insulation For Crawl Space

Blue Summit Supplies Vapor Barrier Tape
  • Our 9 mil, 3.78 inch wide vapor barrier seam tape was developed to be high performance, durable, moisture resistant and manufactured to withstand the most demanding conditions
  • Designed to bind seams of PE films and sealing moisture barriers to encapsulate your a crawl space, vapor barrier tape bonds well to a variety of surfaces with a synthetic rubber-based pressure-sensitive adhesive designed to offer high conformability without excessive stretch
  • Our 9mm PE white crawl space seam tape is ideal for abatement and restoration, marine and boat preservation or shrink wrap, outdoor masking and stucco application/painting, as well as a sealing tape for building or underlayment purposes
  • This durable, waterproof insulation white plastic tape is great for patching and repairs, bundling and housewrap applications, sealing, and separation of dissimilar metals, and more.
  • Durable, moisture resistant PE (polyethylene) film backing features an extremely sticky permanent adhesive for poly liners and plastic-to-plastic vapor barrier adherence, making this white seam tape a great choice for creating a dust barrier, crawl space liner, and more

1" Vapor Barrier Christmas Tree Fasteners for Crawl Space Moisture

1" Vapor Barrier Christmas Tree Fasteners for Crawl Space Moisture
  • APPLICATIONS: Vapor Barrier Fasteners are used for mounting and securing a plastic moisture barrier to the foundation walls and pillars in the crawl space. Can also be used for automotive repair applications.
  • SPECIFICATIONS: Vapor Barrier Fasteners are approximately 1 inch long. Actual dimensions are 22.7mm in length by 7.5mm in width with the diameter of the cap measuring 18mm.
  • INSTALLATION: Drill a hole, using a 1/4" masonry bit or smaller, into the wall and then attach wall liner with christmas tree fastener.
  • SEAM AND SEAL: Using Butyl Tape or Vapor Barrier Tape really helps for a sealed and secure vapor barrier.
  • FOR THAT FINISHED LOOK: When encapsulating a crawl space, consider using capped vapor barrier stakes as well.

RadiantGUARD Reflex-AIR White Double Bubble Reflective Foil Insulation Thermal Barrier

RadiantGUARD Reflex-AIR White Double Bubble Reflective Foil Insulation Thermal Barrier
  • INTENDED USE: Insulating metal buildings, storage sheds, pole barns, and radiant floor heating.
  • SIZE: 500 square feet roll (48 inch wide by 125 linear feet). THICKNESS: 5/16 inch nominal. WEIGHT: 32 pounds. Puncture / Tear resistant. Will not compress or disintegrate.
  • CLEAN INSULATION: Non-toxic, non-carcinogenic, fiber free and does not promote growth of mold, mildew or fungus or provide nutritive value.
  • REDUCES condensation and BLOCKS radiant heat with high thermal R-Values.
  • FIRE RATING: Class A / Class 1 - Meets fire and smoke requirements for most local, state and federal building codes

US Energy Products 1000 sqft (4x250) Solid White Crawlspace Flooring

US Energy Products 1000 sqft (4x250) Solid White Crawlspace Flooring
  • 4 ft X 250 ft roll (1000 sf) non breathable. Ideal for attics, sheds, warehouses, and as house wrap
  • Double-sided 99.9% PURE reinforced ALUMINUM that blocks 97% of the radiant heat in summer and winter
  • Industrialized strength with woven polyethylene scrim for tear resistance. Cannot be torn or ripped
  • Passes required ASTM fire test (E84 using E2599 mounting method) for building materials
  • Exceeds required ASTM Water Vapor Permeability 0.0 perms (ASTM 96-00)

1000 sqft (4x250) Solid White Vapor Barrier Attic Foil White

1000 sqft (4x250) Solid White Vapor Barrier Attic Foil White
  • 4ft x 250 ft SOLID White Faced / Foil Faced Radiant Barrier
  • Water Proof / Heavy Duty Scrim
  • Meets all ASTM Fire Codes
  • Class 1 Class A Fire Rating
  • Made in the USA

Crawl Space Recessed Foundation Vent Cover

Crawl Space Recessed Foundation Vent Cover
  • Crawl space vent cover recesses into most 8"x16" openings. This is a solid piece cover. It does not open.
  • Attaches to inside of crawl space foundation opening with fasteners or adhesive (not included). You must remove you old vent to use this cover.
  • Crawl space vent cover can be insulated by gluing insulation inside the cover. May be used permanently or just for winter.
  • Dimensions: Rectangular Inside - 7 ¾” X 15" Outside Mounting Lip - 9 ¾" X 17 ¼" Inside Recessed Depth - 1 ¼".
  • Excellent for closed, encapsulated or conditioned crawl spaces. May be painted with a plastic adherent paint.

Durablow MFB M2D-S430 Air-Out Stainless Steel 430 Crawl Space Foundation

Durablow MFB M2D-S430 Air-Out Stainless Steel 430 Crawl Space Foundation
  • ▼ Air Out ▼ Dimensions L x W x H: 18" x 9" x 2". ▼ Seven Leaves AC Axial Fan. (Dual fans with power cord).
  • ▼ Built-in dehumidistat (20% - 80% RH Range). dB level 50-61. ▼ Youtube Video: https://youtu.be/abtAAu2J6Ec
  • ▼ Freeze protection thermostat. ▼ UL listed components used. ▼ Measure your crawl space vent opening size before purchasing.
  • ▼ Benefits: 1. Reduces moisture in crawl spaces / foundation to protect home and occupants. 2. Increases air circulation to prevent condensation and wood rot. 3. Exhausts vent radon gas, treated wood gases and odors, prevents migrating into living areas. 4. ON/OFF automatically with SET humidity % level. 5. Exchange the outdoor and indoor air, improve room air quality and balance the humidity.
  • ▼ It helps to reduce radon level in crawl space, since radon (density) is heavier than air, radon will precipitate in lower floors. ▼ 100% Stainless Steel 430 Grade panel & housing box for longer life in humid environment. (Better than other brands' Galvanized Steel.)

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