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Fiberglass Pipe Insulation

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  • Owens Corning ASJ Max Fiberglass Pipe Insulation is Made in the USA
  • Owens Corning ASJ Max Fiberglass Pipe Insulation Benefits
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  • Iron Sizing Chart for Pipe Insulation
  • Copper Sizing Chart for Pipe Insulation
Owens Corning / Johns Manville
Unit Of Measure:
Per 3ft Section

 Product Description

Fiberglass Pipe Insulation covering is intended as a thermal insulation for hot and cold service piping from -20°F to 1000°F. Typical uses include: domestic hot and cold water, hot water heating, high temperature, dual temperature, steam, condensate, and refrigerated lines. Fiberglass pipe covering has a white all service jacketing (ASJ) and comes with a self-sealing lap (SSL) for a quick and easy installation.  Each 3 foot section of pipe insulation comes with a butt strip tape (matching the white ASJ jacketing) that is used to connect two sections of pipe insulation together.  Ordering an extra roll of ASJ tape is recommended for larger projects or projects requiring cuts to fit around elbows, tees, and other fittings.  Use of PVC fitting covers is also highly recommended in conjunction with Fiberglass Pipe Insulation.  White mastic is commonly applied to seal any exposed fiberglass.

White ASJ Jacketing: A large majority of the pipe insulation we ship is the new Owens Corning ASJ Max pipe insulation while some larger sizes and (3 x 1/2, 3-1/8 x 1/2, 4 x 1/2, and 4-1/8 x 1/2) will be Johns Manville Micro-Loc HP.  The new ASJ Max jacketing has a poly top-coat over the ASJ paper which makes it easier to wipe clean and slightly water resistant (cannot be left exposed outdoors).

NOTE: Each unit is 3 linear feet of pipe covering. For example, if you need 9 linear feet, you only need to order 3 units.

NOTE: All Fiberglass Pipe Insulation sizes listed on our site are "pipe sizes" not the diameter measurement. See chart above for sizing instructions.


If you are not 100% sure on what size to order, it is highly recommended to first purchase a Pipe Caliper and use it to accurately measure and then order the correct fiberglass pipe insulation.  Do not hesitate to contact us if you have any questions regarding which size to order.

Fiberglass Pipe Insulation Datasheet




 insulator-kit-small.pngGet a FREE Professional Insulator Kit
with any purchase of over 150 ft of Fiberglass Pipe Insulation

TIP: We highly recommend ordering a roll of ASJ Max Tape with your order of Fiberglass Pipe Insulation to ensure you have enough tape to completely seal your piping system.  Every cut made between fittings (tees / 90s etc) will result in the need for more tape. ASJ Max Tape also comes in 25'er Short Rolls for smaller projects.

 Product Videos

Fiberglass Pipe Insulation Installation Instructions
  • Fiberglass Pipe Insulation Installation Instructions
    This is a basic tutorial that covers how to measure your pipe ...

 Product Reviews

Previous | Showing reviews 11-20 of 41 | Next

  1. Great Product

    Posted by Unknown on 11th Dec 2016

    Great speedy delivery and came as expected. Must get additional tape though as the tape that comes with this on the tube will open up on its own due to heat.

    *Please note that the ASJ Max tape and complimentary joint tape have an acrylic adhesive which requires pressure to be applied (rubbed) at time of use. Rubbing the tape will break the acrylic crystals and allow the tape to adhere as designed. If you find that the joint tape is popping open, simply rub it in. ~BIP

  2. Fiberglass Pipe Insulation

    Posted by Unknown on 21st Nov 2016

    This product was very easy to install. Looks good and insulates well.

  3. Great product, great company.

    Posted by Adam on 16th Nov 2016

    I am in the process of insulating the steam pipes in my house, and this product has been performing great! Installs easily, and the adhesive strips seem to hold up very well.
    Shipping is FAST, appreciate that a lot. thanks!!!

    *Adam, we are glad you are happy with our service and products! ~BIP

  4. How can you beat this combination:

    Posted by Art G. on 13th Nov 2016

    Good Product: Made in USA: Huge Product Selection: Instructions: Instructional videos: Prompt Answers to e-mail Questions; Fast Delivery; and not in the least, the Best Price I could find. How can you beat that?

    *Art, thank you for the compliments, we really appreciate them! ~BIP

  5. Insulation pipe and ASJ Max Tape

    Posted by Andrew on 26th Oct 2016

    I would strongly recommend using this insulation and tape from Buy Insulation Products.com.
    Products are made from high quality and a priced great.
    Thank you for the great products

  6. Great product!

    Posted by Tom K. on 21st Oct 2016

    I learned from experts the Owens Corning makes a very good insulation product, and I was very pleased with the quality and price of the 1-inch pipe insulation I purchased.

    *Tom, we are thrilled that you were satisfied with our service and our high quality Fiberglass Pipe Insulation (Made in the USA). ~BIP

  7. Great Product

    Posted by Joshua R on 21st Oct 2016

    High quality pipe insulation. Good adhesive. Easy to install. Highly recommended product and company. Shipped very fast. My only advice is to buy extra tacks. You will use them! Thank you Buyinsulationproducts.com!

    *You're welcome Joshua, thank you for the review and the advice on the King Tacks! ~ BIP

  8. Excellent Product

    Posted by Jeff on 18th Oct 2016

    Great product. Shipping is FAST. Ordered on a Sunday night receive my package on a Tuesday. Product itself is near perfection. I have used product at other stores with little success and satisfaction. That is not the case here. Only complaint is that I didn't get my free Insulator Kit with my purchase of over $150.00

    *Jeff, thank you for the review. The insulator kit promo is currently given to orders of 150ft or more of pipe insulation, not $150 or more. Sorry for the confusion ~ BIP

  9. They don't disappoint

    Posted by Karen M. on 28th Sep 2016

    We always get our product correctly and fast! Thank you so much!

    **Karen, thank you for all of your business, we greatly appreciate it! ~ BIP

  10. Quality Product

    Posted by Lisa M on 20th Mar 2016

    I have bought pipe wrap from big box stores , as a contractor I can tell your products are built better, with better selection in pipe size , the adhesive to seal the wrap is better and does not come undone like other wraps. I like the fact you included extra tape to seal the wrap. I use it on steam systems

    *Lisa, we are glad that you are happy with the quality of the product, let us know if you need anything else. ~BIP

Previous | Showing reviews 11-20 of 41 | Next

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