Hyglass Recover Board

A unique product consisting of a mineralfortified asphaltic core between two (2) layers of high-strength reinforcing glass fiber mat.
Tech Data PDF

Product Highlights

  1. Inorganic reinforcement will not rot.
  2. Puncture and moisture resistant.
  3. Versatile material that can be used for new, re-roofing, retrofit or waterproofing applications.
  4. Compatible with hot or cold applied adhesives.
  5. Hyload’s roofing products are produced and designed with consideration for environmental responsibility and sustainability, incorporating quality recycled components whenever possible.
  6. Manufactured in facilities that comply with the most stringent government environmental regulations, and can therefore be a part of any “green” construction project.

Applications and Packaging


  • Overlay board when applied on top of isocyanurate roof insulation
  • Separation board when existing roof is to be retrofitted.
  • Protection board for waterproofing applications.


  • 3/16” standard thickness
  • 1/8” and 1/4” available by special request (Truckload qty. only)
  • 4’ X 5 ‘ Standard size (120 per pallet)
  • 4’ X 3’, 4’ X 4’, 4’ X 8’, and 4’ X 10’ available by request (Truckload qty. only)

Substrates and Performance Properties

  • The substrate should be smooth, level, clean, and dry.
  • Surface of HyGlass may have to be primed with HyPrime quick dry primer when any Hyload selfadhered membranes are to be applied to it.

Performance Properties

Weight32 lbs.
Dimension4′ x 5′
Moisture absorption1%
Asphalt content ASTM D14722 – 28%
Moisture content ASTM D146<1%
Dimensional stability ASTM D1204<2%

Surface Preparation

  • Areas to receive HyGlass must be clean, dry and free from dirt, dust and debris. It may be necessary to prime the substrate prior to the application of the HyGlass. If primer is required, our Hyload Hyprime Primer should be used. Primer should be dry to the touch.
  • Surface of HyGlass may have to be primed with HyPrime Neoprene quick dry primer when any Hyload self-adhered membranes are to be applied to it.



Hyload makes available to its customers several high performance product warranties.  Contact Hyload’s Corporate Office directly for details. A standard warranty is 10 years.