When installing a commercial roofing membrane, the way the membrane is attached to the roof deck or insulation can significantly affect the roof’s performance, wind resistance, durability, and long-term maintenance…
- August 14, 2026
What is FM 4470 and what does it cover?
FM 4470 is an FM Approvals standard used to test and certify certain commercial roof assemblies for performance, fire protection, wind uplift resistance, and other property-loss risks. The current edition…
- August 14, 2026
What are OSHA hot work requirements for torch-applied roofing?
Torch-applied roofing systems, such as torch-applied modified bitumen membranes, are widely used in commercial roofing because they provide durable waterproofing and strong performance. However, these systems involve open flames and…
- August 14, 2026
What substrate primers are required for adhered systems?
When installing an adhered commercial roofing system, proper surface preparation is just as important as choosing the right membrane and adhesive. Substrate primers help improve adhesion between the existing roof…
- August 14, 2026
What is UL 1897 uplift testing and when is it referenced?
UL 1897 is a recognized testing standard used to evaluate the wind uplift resistance of roof covering systems. It is formally known as the Standard for Uplift Tests for Roof…
- August 14, 2026
What happens if polyiso gets wet during installation?
Polyisocyanurate, commonly called polyiso, is a popular rigid insulation material used in commercial roofing because of its high R-value, lightweight construction, and moisture resistance. But a common question on roofing…
- August 14, 2026
What silica exposure risks exist in commercial roofing work?
Commercial roofing involves many activities that can create dust, including roof removal, cutting materials, drilling, grinding, and surface preparation. Some of these activities may expose workers to respirable crystalline silica,…
Adhesive open time is an important consideration when installing commercial roofing systems in Florida. Open time refers to the period after a roofing adhesive is applied during which it remains…
- August 14, 2026
What is the difference between UL 790 and ASTM E108?
UL 790 and ASTM E108 are two widely recognized standards used to evaluate the fire performance of roof coverings exposed to fire from outside a building. If you are comparing…
- August 14, 2026
How does insulation facer type affect adhesive compatibility?
When installing a commercial roofing system, insulation does more than provide thermal performance. The type of facer on the insulation board can significantly affect adhesive compatibility, bond strength, application method,…