Simpson unlimited performed the membrane-only commercial roof replacement for this private company in Prince William County in 2013.



Prince William County, VA

Contract Amount


Simpson Unlimited was contracted to perform the commercial roof replacement of a 60 mil. EPDM membrane roofing system for a biomedical resource company in Prince William County, VA. Membrane-only commercial roof replacements can lower the cost of replacing your membrane roofing system, while re-using the gravel ballast and insulation that is existing, providing up to 50% cost savings over a complete commercial roof tear-off and replacement. When tearing off and removing a commercial roofing system down to the roof deck, local codes require that the owner make a large investment in replacing insulation to meet current energy code requirements. When a membrane-only replacement approach is taken, the replacement of the insulation is not required, providing the owner with significant savings and a the same twenty year duration on the warranty. Commercial roof replacements of this kind are also completed relatively quickly. This building was occupied and operational during the complete duration of the commercial roof replacement that was performed over a period of two months over about half of the building’s footprint.


What Our Customers Say

"They always do quality work and their guys are always skilled."

Cushman & Wakefield

"All of their work was proposed correctly. The work is excellent!"

Chelsea Tower Condominium

"They have delivered exceptional customer service to us and our tenants!"

Washington Prime