Load-bearing curbs – built-up roof

Download our technical drawing for a detailed explanation of how to specify and successfully weatherproof a load-bearing curb for input units, fans, and other equipment on a commercial built-up roof. Find out what layers are required, and how they work together to create a weatherproof seal. Weatherproofing load-bearing curbs Roof curbs provide support to roof-mounted equipment and play an important part in weatherproofing the roof penetration. They should be installed at a 90-degree angle to the roof pitch, and the height of the curb should be at least 150mm from the roof surface. We also recommend weatherproofing with the Jones Weatherproofing in-situ weathering system. This is a cold-applied GRP-based seal that provides flexibility, durability, and long-term performance. This technical drawing shows the various elements required to ensure a weatherproof load-bearing curb on a commercial built-up roof, and how they work together. To find out more, click the download button below. You can also get in touch with a member of our team using the contact form on this page.