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News
ROCKWOOL Cavityrock® Black offers aesthetics, performance and potential installation savings for open-joint cladding systems
ROCKWOOL, North America’s largest stone wool manufacturer, has launched Cavityrock® Black—a dual-density insulation board designed to mask the insulation layer with a bonded fleece facing to create a crisp, dark aesthetic in open-joint facades. Cavityrock® Black also offers the same excellent thermal performance, fire resistance, and moisture control of ROCKWOOL Cavityrock® insulation.
News
Top 2018 Employer
Milton-based stone wool insulation manufacturer ROXUL Inc. (to be known as ROCKWOOL as of January 1st, 2018) has been awarded the title of Hamilton-Niagara’s Top Employer for 2018.

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Roofing Insulation Application Guide
This Roofing Insulation Application Guide will help you design and build roof assemblies that meet and exceed the most stringent performance targets.
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Ontario Home Energy Conservation Program
The more efficient your home, the more comfortable it will be. With the Enbridge's Smart Savings program, you can get up to $1750 back when you upgrade attic, basement and exterior wall insulation!
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Newsletter Sign Up
Sign up today to receive monthly updates with the latest news and information from our Ranson team delivered directly to your inbox.
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Community support, involvement, and economic impact
By building our state-of-the-art manufacturing facility in Ranson, we are committing to making a long-term and positive impact on the economy of Jefferson County. The $218 million investment includes $64 million in payroll and $4 million in taxes over the first 10 years, in addition to the community support we have already started to provide through partnerships with local organizations.
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Your guide to navigating interior-insulated mass walls
High-performance solutions for precast, cast-in-place, CMU, and masonry assemblies – this interior-insulated mass wall application guide can help you plan for your next project.
Case Studies
Ken Soble Tower Case Study
The Ken Soble Tower project sought to rehabilitate a post-war apartment in Hamilton, Ontario. The building was completely upgraded, inside and out, to achieve Passive House standard, reducing greenhouse gas emissions by an impressive 94%
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What are the benefits of renovation?
Energy renovation can help solve today’s economic challenges while supporting the green transition and securing local jobs. Want to understand what renovation can do for you?