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Fiberglass Pipe Insulation

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  • Owens Corning Fiberglass Pipe Insulation with ASJ Max Jacketing and SSLII Double Adhesive Closure System
  • Owens Corning Fiberglass Pipe Insulation with ASJ Max Jacketing and SSLII Double Adhesive Closure System
  • Owens Corning ASJ Max Fiberglass Pipe Insulation Benefits
  • Iron Sizing Chart for Pipe Insulation
  • Copper Sizing Chart for Pipe Insulation
  • Owens Corning Fiberglass Pipe Insulation with ASJ Max Jacketing and SSLII Double Adhesive Closure System
  • Owens Corning SSLII Fiberglass Pipe Insulation with ASJ Max White Poly Coated Jacketing
Owens Corning / Johns Manville
Unit Of Measure:
Per 3ft Section

 Product Description

Fiberglass Pipe Insulation covering is intended as a thermal insulation for both hot and cold service piping from -20°F to 1000°F.  The pipe insulation is molded from heavy density resin bonded glass fibers that come in 3 foot long hinged sections. The fiberglass is wrapped with white All-Service Jacketing with a self-sealing lap (ASJ/SSL) for a quick and secure 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.

Typical Uses Include:

  • Domestic Hot & Cold Water Pipes
  • Hot Water Heating Pipes
  • High Temperature Pipes
  • Dual Temperature Pipes
  • Steam Pipes (Low to High Pressure)
  • Condensate Lines
  • Refrigerated / Chilled Liquid Pipes

Choosing The Correct Size:  There are two sizes you need to choose when ordering, the "Pipe Size" and the "Insulation Thickness".  The insulation thickness is the wall thickness of the fiberglass which varies from 1/2" up to 3" thick. For help selecting a fiberglass pipe insulation thickness see our Fiberglass Thickness Guide  To determine which Pipe Size to order please see the link below (Note: Pipe Size is NOT the same as the pipe diameter):


Installation Instructions:

To install pipe covering, simply open the hinged part of the pipe insulation and place the opening over the pipe. The fiberglass pipe insulation will self-close around the pipe. Once the fiberglass is fitted snug around the pipe, peel the release paper from the self-sealing lap and press the ASJ/SSL jacket closed from the middle towards the edges of the pipe insulation. Make sure to rub the jacket closed to ensure a secure seal.  Seal two sections together with a piece of butt strip tape making sure to rub the tape to create a secure seal.  Additional ASJ MAX Tape is recommended for large projects and projects that require multiple cuts of the insulation.  Use of PVC Fitting Covers for elbows, tees, unions and other pipe fittings should be installed after installing fiberglass pipe insulation. 

For more information: Fiberglass Pipe Insulation Datasheet


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).

SSLII Double Adhesive Closure System: Owens Corning fiberglass pipe insulation comes with the advanced SSLII Closure System which utilizes two strips of adhesive rather than the standard SSL closure system which is has only one strip.  The SSLII system ensures a tight and secure closure of the ASJ Max jacket and prevents any unexpected opening of the jacket after install.

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.



 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.



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 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

Showing reviews 1-10 of 91 | Next

  1. High quality, easy to install

    Posted by Barbara S. on 9th Dec 2018

    The 1" thick fiberglass steam pipe insulation was much higher quality than expected. It arrived the next day after ordering. I only have one functioning hand but was still able to install it easily in a few hours. So yeah, you could install it with one hand tied behind your back. The sections can be cut to size with a box cutter or pocket knife. They are self-adhesive and also come with tape to seal the sections together.

    It made a huge difference in our heating system, keeping the basement cooler and the rest of the house warmer. I was so pleased, I ordered similar 1" fiberglass pipe insulation for our hot water pipes.

    I'd recommend wearing eye protection during installation to prevent bits of dust and fiberglass from getting in your eyes.

  2. So few things in life are better than I expected.

    Posted by Steve S. on 5th Dec 2018

    First thing that I liked was that I had a question, after looking at the helpful website, so I called and the phone was picked up and my question was answered right away.

    The next thing that made me happy was that I got the order the next day! And the shipping cost was very reasonable for the size of the box I received.

    What did I order? Well I have a utility room/ laundry room right off the front entry way of my house. Had about 60 linear feet of exposed domestic heating piping, 3/4 and 1 inch. Covered it up with 1 inch thick fiberglass insulation and PVC elbows and T's (they came with insulation and tape as well). Cost for these parts... about $100. It was about 100 degrees F in that room.

    How did the installation go? Well, I planned it out very well in my head. Made sure I had plenty of time, had a snack, then got started. Basically just needed a sharp, smooth bladed knife, tape measure and... some common sense (not everybody has that lets face it) and personal protective gear.

    It looks beautiful! I mean really, covering up those ugly looking old pipes with nice, neat clean, professional looking insulation is worth $100 in itself.

    Yeah, but did it work? Heck yes it worked! It is down to about room temperature in that area now. Touching the outside of the insulation jacket feels like it is room temperature compared to the 200 degree pipe one inch away.

    *Steve, thank you for such a well thought out review on our products and our service! We really appreciate the kind words ~ BIP

  3. Easy to install / Great video

    Posted by Scott H. on 29th Nov 2018

    I've never insulated pipes before and found this project to be quite simple.

    The instructional video on your website was very helpful and helped me make this install look better than some professional jobs I've seen!

    The order was also 100% accurate, which I'm thankful for. I plan to insulate the rest of my heating system soon and will definitely order from you again.

  4. Fits Nicely

    Posted by Frank S. on 19th Nov 2018

    The size guide was very helpful and I must have selected the right sizes because all three different sizes fit the pipe tightly. The insulation its self is good quality and the jacket is bright and glossy.

  5. Scam!!

    Posted by Al K. on 17th Nov 2018

    I ordered 3 pieces 5 inch fiberglass insulation but received 1/2 inch!! Also paid about $30 for overnight delivery, it took a week to receive. I don’t recommend.

    *Al, I am truly sorry to hear that you are upset with our service. I looked into your order and we shipped it out the very same day you placed it. UPS was unable to deliver to your address and brought it to a UPS Access Point since they can no longer drop packages without signature to that location. Unfortunately UPS' decision to not drop a package is out of our control. In regards to the order error we can make mistakes but we always go over the top to correct them. I did not see a reported error for your order so this is the first we are hearing about it. Please email/call in all the details and we will fix this immediately. ~BIP

  6. Good Quality

    Posted by Jorge A. on 4th Nov 2018

    Very good quality. The video they had to put this product together was very helpful. The shipping was fast and everything came in perfect condition.

  7. Great Products / Great Service

    Posted by Peter V. on 2nd Nov 2018

    This site has great guides and videos which helped give me peace of mind when placing my order. I called them once and the gentleman was very helpful in double checking my order with me. I was going to order from a competitor but that site was very confusing on pipe sizes and I tried calling them three times and emailed support without any answer. A couple days after I already installed this pipe insulation the other guy emailed me, I told him I already insulated my pipes with insulation from Buy Insulation Products!

  8. Works great, easy installation, and good prices compared to big box stores!

    Posted by John T. on 31st Oct 2018

    As easy as it can get, and the extra tape for the joints makes the whole installation look seamless!

    I am confident that the adhesive is solid and will last a very long time.

    Just be careful when ordering two different sizes, it might be hard to tell the difference.

    *John, thank you for the good review. Please note that the pipe insulation sizes are listed on the inside of the ASJ jacketing and will soon be printed on the outside of the jacketing and on the glass as well. ~ BIP

  9. Awesome stuff very easy to install

    Posted by Nicholas R. on 29th Oct 2018

    Needed new insulation for my steam pipes in my old house, and almost bought Home Depot half inch stuff. I'm glad I did the research and found BuyInsulationProductStore.com

  10. Gets the job done

    Posted by M M. on 18th Oct 2018

    This insulation is well designed, easy to cut and easy to install. But more important, Buy Insulation Products is super easy to work with; their products are reasonably priced and shipping is relatively fast

Showing reviews 1-10 of 91 | Next

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