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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. 

SPECIAL OFFER: Free shipping on select sizes in Full Box quantities: Click on links for more details:  1" Thickness  - 1/2" Thickness

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 common size pipe insulation we ship is the new ASJ Max / HP ULTRA 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 / HP ULTRA 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.


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 121 | Next

  1. So easy to install and effective

    Posted by William L. on 27th Apr 2019

    I went all in, buying everything I thought I needed for my project hoping that it would work out well. Any yeah, it has. This stuff is easy to cut to length and fits perfectly. There have been a few spots where pipe is too close to a wall where I've had to shave off insulation on the inside of the tube but it's has been relatively pain free. Great product!

  2. Fast easy install, professional look

    Posted by Dave K. on 25th Apr 2019

    I've never insulated pipe before and was impressed with how fast and easy the install was. Its hard to screw up with this. I would recommend buying the widest tape if you plan on sealing the joints as the jacketing can be up to a 1/2" shorter than the insulation.

    I used 1" insulation on my steam heating system and from feeling the pipes while the furnace is on, can tell that there is a lot less heat loss compared to the asbestos insulation that I had removed.

  3. Most efficient Insulation for the money

    Posted by Tyler B. on 22nd Apr 2019

    Buy Insulation Products offers the best priced insulation, fast shipping, and quality insulation. 0 issues with any of the insulation we ordered and seems to hold up quite well.

  4. Just what we needed

    Posted by Scott on 16th Apr 2019

    Excellent products at a great price!

  5. Very satisfied

    Posted by Paul A. on 14th Apr 2019

    Product even came with tape for joints, great insulation for hot water lines

  6. Great Company

    Posted by Gerry R. on 6th Apr 2019

    Great prices. Top brands of products. Very easy to place orders. Great communication. Pay the the shipping the cost is still less than the others.

  7. Quality and Value plus Outstanding Service

    Posted by John M. on 1st Apr 2019

    The insulating rolls that I have purchased are just great . The sizes and thickness options make for perfect fit resulting in perfect fit with little or no heat loss. Easy to cut if needed and provides a neat tidy and clean look.

    A must have product for anyone with a steam heating system

  8. Very easy to use and high quality

    Posted by Alex T. on 17th Mar 2019

    Fits all three pipe sizes I used snuggly. The split design with sealing tape made installation very easy and professional looking. Insulation is a tight design so if you need to cut lengths it is easy and does not compress or come apart.

  9. Great Insulation for Steam Radiator Pipes

    Posted by Roger in Brooklyn on 12th Mar 2019

    I just purchased an old brownstone with a steam radiator system. The furnace tech advised me to insulate the main radiator pipes in the cellar. After looking at inferior options, I found this tubular fiberglass insulation at buyinsulationproductstore.com. It was easy to calculate the insulation size I needed for my 2" cast iron pipes. The product arrived quickly and was easy to install. I ordered additional tape, but probably only need the tape that came with the 13 rolls I ordered. Now, I just need to install insulated elbows and tee's which I just ordered. I recommend this product highly.

  10. Pipe Insulation Fast & Easy

    Posted by Joe S. on 12th Mar 2019

    I had old asbestos insulation removed from my steam pipes. Chose to use 1-inch thick fiberglass. The jackets provided by BIP made the job go very quickly and easily. They also provided tape segments for the joints. The fiberglass was well made, easily cut or hollowed out to fit around pipe connections. They have several videos on line that show the proper way to install the jackets, angles and elbows also the sizing charts took out the guess work. Reasonably priced compared to the national retail stores and showed up at my door within 3 days of placing the order. Definitely would recommend to anyone needing to insulate pipes. Would recommend picking up an extra roll of tape.

Showing reviews 1-10 of 121 | Next

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