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Applying Spray Foam on Varying Roof Levels


Many buildings and building owners suffer from a building that was built in various stages over the years, rather than one complete project. When buildings are assembled in stages, they don’t always tie together as you’d expect or hope. What you end up with is a roof system that has multiple different levels, and multiple different substrates. These roof systems are hard to manage because each roof section requires a different type of attention, repair technique, inspection frequency, etc. If you’ve got a roof system that has varying levels and varying materials, we have a solution that you’ll love.

Foam Adheres to Many Different Roof Surfaces

One of the biggest advantages of spray foam is that it will adhere to just about any surface it’s applied to. Foam can be sprayed directly onto the surface of many different materials, and it will adhere to all of them. Because the two chemicals are being mixed when foam is applied, a chemical reaction occurs that enables the foam to harden and become stronger, while also grabbing onto just about anything. This is obviously a major advantage for roof systems with multiple substrates. Other roof systems may not be able to be installed over every substrate you have, but foam most likely can.

varying roof
Does your roof have varying heights, materials, and angles? Spray foam can handle it all

Foam Can be Easily Installed Anywhere

Have a roof with varying roof levels? No problem. Foam can be installed with nothing more than a hose and an application gun. Once the roof is installed on one roof section, simply move to the next one with your hose and you’re ready to keep installing. No other roofing system can be installed as easily as spray foam can.

Foam Ties Together Uneven Roof Sections

When a building is built over time, the roofs often end up at different heights. These variances can be an inch or two, or they can be a couple feet. This poses a major challenge when working with traditional roofing systems. It’s difficult, and sometimes impossible, for other systems to tie the varying heights together. Foam can tie these roof sections together because it can be applied vertically or horizontally. It will set up and form a “bridge” between the two roof sections. A bridge that doesn’t leak, doesn’t allow heat in, and can be walked on.


Don’t sweat it if you have a building with multiple substrates and roof heights – spray foam and a good spray foam contractor can replace all your roofs and tie them into one continuous system.

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