Steam Pipe Insulation

Steam pipe insulation for homes and buildings. Fiberglass pipe insulation made of 1 inch thick compressed commercial grade, heavy density resin bonded fiberglass. The steam pipe insulation exterior is jacketed with a smooth, white-colored, textile reinforced vapor retarder jacket that protects the fiberglass material and gives you a nice, clean look. Home and building owners save big bucks on their energy bills! Steam pipe insulation saves you money by reducing steam heating energy loss during the heating season. Often used to replace the old, dangerous asbestos insulation that may have been previously removed. Also used on commercial process systems. Rated up to 850 degrees F. Available for pipe sizes from 1/2" to 6". Sold in 3 foot lengths. Short pieces of insulation can be cut to size.

Steam Pipe Insulation Documentation

Steam Pipe Insulation Ordering Instructions

  1. Understand how much money you can save ~ This is the most critical point in the process. If you already have a thorough understanding of the energy and cost savings achieved with steam pipe insulation, then you are one smart cookie. If you don't know how much efficieny is gained by insulating your steam pipes, click on the "Energy Savings" tab above for an overview, then download our Steam Pipe Insulation Cast Study.

  2. Properly size your steam pipe insulation ~ Click on the "Sizing Chart" tab above for, your guessed it, a sizing chart! The chart contains instructions and measurements on how to properly size your piping for insulation.

  3. Don't forget to insulate your steam pipe fittings! ~ State Supply's custom cut steam pipe fitting insulation allows you to insulate all the different sizes and styles of pipe fittings. Our fiberglass insulation for pipe fittings is custom cut fiberglass with a corresponding PVC plastic covering. State Supply stocks all popular sizes of fittings insulation for your 90° elbows, 45° elbows and tees.

  4. Order Z-tape to secure your insulation fittings? ~ If you are ordering the Zeston steam pipe insulation for your pipe fittings (elbows, tees, etc) don't forget to order high-temperature Z-tape to secure the PVC fitting covers.

  5. Get Energy Provider Rebates! ~ Many energy providers offer significant rebates when you invest in fiberglass pipe insulation for your steam heating system. So contact your energy provider today.

Steam Pipe Insulation Sizing Chart

For the homeowner or new building maintenance professional, pipe size can be a hard measurement to determine: pipe sizes are "relatively" based on the inside diameter of the pipe or pipe fitting. Of course, it is hard to measure the inside diameter when the piping is already installed!

The two examples shown below offer you a couple of ways to determine the pipe size of installed pipe.

Steam Pipe Insulation Sizing Chart Diagram

Measure either Outside Diameter or Outside Circumference, Standard Pipe Of course, there is some "give and take" with the pipe measurements shown below. Simply order the steam pipe insulation that will accommodate your recorded measurements.

Actual Pipe Size Corresponding
Outside Diameter
(Approximate) Inches
Corresponding
Outside Circumference
(Approximate) Inches
½" .84 2.639
¾" 1.05 3.299
1" 1.315 4.131
1-¼" 1.66 5.215
1-½" 1.90 5.969
2" 2.375 7.461
2-½" 2.875 9.032
3" 3.50 10.996
3-½" 4.00 12.566
4" 4.50 14.137
5" 5.563 17.475
6" 6.625 20.813
8" 8.625 27.096

How Much Energy Are you Wasting?

Uninsulated steam distribution and condensate return lines are a massive source of wasted energy. Furthermore, insulation is frequently damaged and is never repalced. Damaged or wet insulation should be repaired immediately to prevent energy waste. Causes of wet insulation include leaking valves, pipe leaks, tube leaks, and leaking equipment. Take care to remove moisture and fix any leaks prior to replacing insulation.

Calculating the ROI of an Insulation Upgrade

The Department of Energy has a free tool called 3E Plus. This downloadable calculator is designed to help users determine the return on investment (ROI) of an insulation implementation/upgrade. 3E Plus allows users run an energy loss analysis by factoring in pipe size, base metal type, process temperatures and surface geometry, along with the types of insulation being considered. With this information, 3E Plus is able to tell you the amount of energy and emissionsions that will be reduced by upgrading your insulation.

As a basis for consideration, the table below provides general estimates of energy savings achieved by insulating your steam pipes.

3E Plus energy savings results of steam pipe insulation per 1 meter length
(steam pressure: 5kg/cm², saturation temp: 158°C)
Pipe diameter 1" 1.5" 2" 2.5" 3"
Radiation heat of bare pipe (kcal/m-h) 225 320 400 505 590
Insulation thickness (inches) 2" 2.5" 2.5" 2.5" 2.5"
Saved steam (kg/day) 9 14 17 22 27

Actual values may vary depending on the service conditions.

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  1. Fiberglass Steam Pipe Insulation for 1/2" Pipe

    Fiberglass Steam Pipe Insulation for 1/2" Pipe

    SKU: IF1010X

    Fiberglass pipe insulation for 1/2" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $4.56
  2. Fiberglass Steam Pipe Insulation for 3/4" Pipe

    Fiberglass Steam Pipe Insulation for 3/4" Pipe

    SKU: IF1015X

    Fiberglass pipe insulation for 3/4" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $5.25
  3. Fiberglass Steam Pipe Insulation for 1" Pipe

    Fiberglass Steam Pipe Insulation for 1" Pipe

    SKU: IF1020X

    Fiberglass pipe insulation for 1" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $5.61
  4. Fiberglass Steam Pipe Insulation for 1-1/4" Pipe

    Fiberglass Steam Pipe Insulation for 1-1/4" Pipe

    SKU: IF1025X

    Fiberglass pipe insulation for 1-1/4" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $6.12
  5. Fiberglass Steam Pipe Insulation for 1-1/2" Pipe

    Fiberglass Steam Pipe Insulation for 1-1/2" Pipe

    SKU: IF1030X

    Fiberglass pipe insulation for 1-1/2" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $6.57
  6. Fiberglass Steam Pipe Insulation for 2" Pipe

    Fiberglass Steam Pipe Insulation for 2" Pipe

    SKU: IF1035X

    Fiberglass pipe insulation for 2" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $7.14
  7. Fiberglass Steam Pipe Insulation for 2-1/2" Pipe

    Fiberglass Steam Pipe Insulation for 2-1/2" Pipe

    SKU: IF1040X

    Fiberglass pipe insulation for 2-1/2" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $8.10
  8. Fiberglass Steam Pipe Insulation for 3" Pipe

    Fiberglass Steam Pipe Insulation for 3" Pipe

    SKU: IF1045X

    Fiberglass pipe insulation for 3" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $8.67
  9. Fiberglass Steam Pipe Insulation for 4" Pipe

    Fiberglass Steam Pipe Insulation for 4" Pipe

    SKU: IF1050X

    Fiberglass pipe insulation for 4" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $11.49
  10. Fiberglass Steam Pipe Insulation for 5" Pipe

    Fiberglass Steam Pipe Insulation for 5" Pipe

    SKU: IF1052X

    Fiberglass pipe insulation for 5" iron pipe. Sold in 3 foot sections. 1" wall thickness with factory applied aluminum jacketing with white reinforced covering. The sections are spilt lenghtwise and have an adhesive strip to seal the split after installation. Rated -20 to +500 F. Oversize Shipping Charges Apply. Learn More
    $12.90
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