Solutions /

HVAC/Mechanical Roof Curbs

HVAC Curbs that respond to your equipment needs.

HVAC Roof Curbs

Roof top mechanical equipment comes in all shapes and sizes. SSM makes roof curbs to match.

SSM fabricates roof curbs that respond to a number of different conditions.  Exhaust fans, HVAC equipment or other specialty devices of all kinds can be accommodated by our curbs.

The difference is SSM.  Our curbs are one piece units that are easy to install. Fewer parts means more productivity.  Because of this, our roof curbs save your crews time on the installation sequence.

When coupled with our skylight roof curbs, you have an unbeatable combination of solutions to assist you with your project’s specific needs.

For more information or assistance, please fill out the form at left.  Or, feel free to contact Derek Mills directly.  You can reach him via e-mail at: or by phone:  816.627.5437.

Download Spec Sheet – PDF Download Spec Sheet – Word Hybrid Roof Curb Installation Guide

SSM‘s Roof Curb Installation Guide

By selecting our hybrid roof curb, you have selected a patented (US Patent #US 9546485B2) and proven product that is easy to install.

With decades of experience and thousands of roof curbs under our belt, it is no wonder we are able to continue to innovate and improve our hybrid roof curbs.

There are dozens of roof curbs on the market today, but what sets SSM apart is the attention to detail and the continuous evolution of our patented design.

+Roof Curb Parts

SSM offers a one-of-a-kind patented (US Patent #US 9546485B2) roof curb that comes in one piece, with no assembly required, making for easy install.

Roof Curb Install Diagram

1. 24 gauge Galvalume®, welded cap is part of our patented design.

2. Integral water diverter cricket.

3. Except as noted, our components are 18 ga. Galvalume®. Our
standard Top Flange is 1 1/2” wide but this can vary depending upon your job requirements.

4. Standard height is 10”and sloped to the roof pitch to provide a level mounting surface, based upon your project’s specific needs.

5. The bottom flange, found on 3 sides, is also 1 1/2” wide but custom widths are available.

6. The interior of the Cricket is full enclosed and insulated.

7. Pre-laid out fastener holes, 9/32” in diameter, are placed at 3” [max.] centers around the full curb perimeter.

8. Purlins, enhance stability of the roof, improving both safety and performance.

+Phase 1: Prep Your Spot

Engineered for ease of Installation, SSM‘s one piece hybrid curb solution is designed to make installation easy.

Hybrid Roof Curb Pre InstallA] Set the curb in place and mark the area to be removed.

B] Cut the opening and trim back the roof’s standing seam components as needed for the curb to seat properly.

C] Clean the area around the opening to remove loose particles.

Hybrid Roof Curb Pre-Install

+Phase 2: Lay Your Roof Curb Down

Roof Curb InstallationD] Apply double stick butyl tape [provided] to the underneath side of the perimeter of the roof curb.

E] Trim all excess butyl and check to see that the tape is secure.

F] Remove the backing layer from the tape and flip the hybrid roof curb over – holding it above the roof opening – and check for proper alignment.



+Phase 3: Place Your Roof Curb

Roof Curb InstallationG] Place curb in position and press down along the butyl tape edges to ensure even contact.

H] Secure the curb in place, as per the provided fastener holes, with mechanical fasteners [provided].


+Phase 4: Clean Up and Finish

Hybrid Roof Curb Installation

I] Clean up the area around the opening joint between hybrid curb and roof to remove any loose particles.

J] Apply caulk around the perimeter of the hybrid curb in an even and concise manner, utilizing the proper tools, to ensure a consistent seal.

That is it!  You are ready to move on to the next one!

Final Hybrid Roof Curb Installed