Flynn Canada

Flynn Canada is a trade contractor of complete building envelope solutions. With 17 offices from coast-to-coast they manage single facilities, as well as organizations with national real estate portfolios. When the company needed to expand its own real estate, by turning a warehouse into office space, the noise inside the building from the nearby airport needed to be addressed. A re-roof was needed over the office space portion of the building. Valcoustics, an acoustical consulting company, performed acoustical testing on the initial building before and after the re-roof to assess the difference in noise transmission frequencies.

ROCKWOOL Product Installed

ROCKWOOL TOPROCK® DD is a rigid stone wool insulation board with exclusive dual density properties. It features a higher density top layer providing strong point load resistance and effective load distribution. TOPROCK is fire resistant, water repellent, sound absorbent, sustainable and has a long term stable R-value.

Project Location

Toronto, ON

Roof Assembly

• White single ply TPO membrane adhered with asphalt

• 5/8” cover board mechanically attached to the deck

• 2.5” TOPROCK DD insulation

• 1.5” polyso insulation

• Vapor Barrier

• Steel deck

Flynn case study 1
Based on the same sound level at the roof for the pre and post renovation condition, the indoor NC level has been reduced from NC 61 to NC 39 with the indoor sound level dropping from 58 dBA to 45 dBA. This reduction is a direct result of the roof upgrade, which included the addition of the ROCKWOOL TOPROCK DD 2.5 inch insulation.

Valcoustics Canada Ltd.