Guardian Building Products 302646 24 x 28 in. Insul Batt R38k

Guardian Building Products 302646 24 x 28 in. Insul Batt R38k

|48 ratings

Key item features

  • ECOSE Technology reduces binder embodied energy
  • Does not contain phenol, formaldehyde, acrylics or artificial colors
  • Material Fiberglass
  • Height 25.000
  • Length 24.000
  • Type Kraft Faced
  • Width 52.000

Specs

Insulation type, Blanket InsulationR-value, 38Material, FiberglassRecommended use, WallsWeight, 31.72 lbBrand, Guardian Building Products

About this item

Product details

Knauf fiberglass products act as a thermal barrier, providing energy savings (and lower energy bills) in both hot and cold climates. They help create a more comfortable indoor environment in a home or commercial structure and provide acoustical insulation to a structure. Knauf Performance+ products are now both Asthma & Allergy Friendly Certified and Verified Healthier Air, marking the first full line of fiberglass insulation to achieve these certifications. Currently, Knauf is the only insulation manufacturer with products that are Asthma & Allergy Friendly Certified and Verified Healthier Air. The Certification Program, established by the AAFA and Allergy Standards Limited (ASL), involves extensive physical and chemical testing to ensure products reduce allergen exposure and limit pollutants in indoor environments. Knauf's residential Performance+ insulation products meet the following criteria: 1) Formaldehyde-free binder, 2) Extremely low dust levels present post-installation and 3) Extremely low VOC emissions at 24 hours and 14 days post-installation. Knauf ECOBATT products feature legendary handling, cut easily and cleanly, recover quickly, are less dusty and install easily enough for a professional or DIY'er. null -
  • ECOSE Technology reduces binder embodied energy
  • Does not contain phenol, formaldehyde, acrylics or artificial colors
  • Material Fiberglass
  • Height 25.000
  • Length 24.000
  • Type Kraft Faced
  • Width 52.000
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Specifications

Insulation type

Blanket Insulation

R-value

38

Material

Fiberglass

Recommended use

Walls

Warranty

Warranty information

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Warnings

Customer ratings & reviews

4.9 out of 5 stars
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48 ratings48 reviews
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Showing 1-3 of 48 reviews

Oct 23, 2026
Reviewer name: Patrick R
5 out of 5 stars
5 out of 5 stars review

Less itchy and better smell

We utilize approximately 12 tractor trailer loads of fiberglass batten insulation per year across our service areas. We've used several other brands in the past, typically those that are pink or yellowish in color, and we specifically switched to Knauf ecobatt due to the odor and extreme itchiness of the other brands. Knauf is far and away the most comfortable fiberglass to touch barehanded while also having little to no odor in comparison.

Review from Knauf Insulation
Helpful?1UE88DT434IG132710191
reply from Customer Experience Team

Thank you for the wonderful feedback! We appreciate your business.

Oct 23, 2026
Reviewer name: nm622006
5 out of 5 stars
5 out of 5 stars review

Easy Choice for Insulation!

Best product on the market for fiberglass batts! Multiple sizes and R values for your projects and with their ECOS spray on the fiberglass you don't have the issues with itchy and dusty installs. Great product for contractors and DIY installers!

Review from Knauf Insulation
Helpful?1UE88DT434IG132710191
reply from Customer Experience Team

Thank you for the great feedback! We're glad to hear our insulation products are meeting the needs of both contractors and DIY installers.

Oct 23, 2026
Reviewer name: Ronnie M
5 out of 5 stars
5 out of 5 stars review

Knauf is our Go to choice

As a company, we almost exclusively use Knauf EcoBatt insulation. We love the product and our customers stay happy with our installations. With many R-values and format options, Knauf always delivers the right product for the application!

Review from Knauf Insulation
Helpful?1UE88DT434IG132710191
reply from Customer Experience Team

Thank you so much for your feedback! We appreciate your business.

Current price is $180.30
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  • Free Holiday returns until Jan 31

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