Steel Building Fiberglass Insulation Resource

interior view of metal building fiberglass insulation

Buy Fiberglass Insulation At Wholesale Prices!

Factory Steel Overstock is the perfect resource to get Fiberglass insulation below standard market prices. Whether you want R – Value 7, 10, 13, 19, 38 or more, You can buy online quickly.  In addition, you can request multiple facing options when you buy your building with us!

More Info about Fiberglass Insulation...

Most people are familiar with fiberglass insulation.  It is what was in your attic when growing up–though there have been improvements on its facings.

Owens Corning® EcoTouch® Certified R Metal Building Insulation is a light density fibrous glass blanket.  Steel building insulation is basically blankets of woven long-strand fiberglass that are laminated on one side to a vapor-barrier facing.  Facing materials are applied to fiberglass insulation blankets to serve as a vapor retarder as well as a protected cover over the fiberglass.  Factory Steel Overstock prices fiberglass with WMP-VR-R+ facing.  This vinyl-reinforced backing is far more durable than vinyl alone.  See more on vinyl vapor barrier backings posted below.

A 3″ tab runs along the length of both sides of rolled-out insulation for easier handling during install.

  • ASTM C991-08, Standard Specification for Flexible
    Fibrous Glass Insulation for Metal Buildings; Type II.
  • NAIMA 202-96 (Rev. 2000) Standard for Flexible
    Fiber Glass Insulation to be Laminated for Use in
    Metal Buildings.

Understanding R- Value

R-Value is based on measuring the amount of heat loss, or ability to retard the loss of heat flow. Understanding R-value with fiberglass insulation is easy: The R-value is directly related to the fiberglass thickness. The thicker the fiberglass blanket you have, the higher the R- value. It is important to note, all R-values for fiberglass insulation have been determined before installation. Compression of the purlin install method will reduce the R-values. Factory Steel Overstock can quote up to R-38 Value (double layer installation system).

steel building fiberglass r value chart

Options for Vinyl Vapor Barrier Facings:

Our online prices posted as add-ons in Option 2 – Build Your Own Package Estimator, may include:

  • 3″ R-10 – Roof & Wall R-10 -or-
  • 6″ R-19 Roof – 4″ R-13 Wall

with WMP-VR-R+ vinyl facing.  For most standard uses of your metal building, this is sufficiently strong and adequate for being tear-resistant.  We simply wouldn’t settle for less, nor expect you to pay more than the wholesale pricing we pass on to you!

steel building insulation

You may request pricing for alternative backings shown below:

steel building fiberglass insulation
fiberglass steel building insulation
steel building insulation
Gymguard Steel Building Insulation
Ice Arena steel building insulation
Black vinyl facing steel building insulation

Simple Installation Procedure for Single Layer Blanket:

  1. You simply place the insulation roll over the top of the roof purlins and / or wall girts. This is done prior to the exterior metal panels being installed.
  2. The fiberglass rolls are essentially sandwiched between the interior metal and the exterior sheeting.
  3. The vapor barrier (usually white finish) is faced towards the inside of the building, giving the building a clean finished look. We always Re-enforce this facing so that our customers have the most sturdy backing. With a single layer application, you can achieve R-Values up to R-19, but not higher.
  4. The 3” tabs are to be rolled over and stapled. Orders come with double-sided tape for easy adherence to building, and a small supply of patch tape to assist with minor tears if needed.
single layer steel building fiberglass insulation
fiberglass metal building insulation

Simple Installation Procedure for Double Layer Insulation System:

The great thing about fiberglass insulation, is you can just add an additional layer and increase your R-value. The highest R-value you can have with a single layer of insulation is R-19 which is 6”.  Your purlin depth determines the thickness of your bottom layer.

  1. Faced fiberglass ( we always include a reinforced faced backing) rolls are installed between the purlins and / or girts, filling the cavity. This cavity is important, for it allows the insulation to maximize its efficiency.
  2. This insulation is secured by banding that is screwed to the underside of the purlins. An additional layer of unfaced insulation is then placed over the top of purlins or girts, creating a double layer high R-Value system.
fiberglass double layer steel buildings

Want to Know More about Reflective Insulation?