A commercial roof inspection is mandatory every year for any building or facility.

According to the NRCA, you need to do it at least every six months (before entering each extreme season, summer and winter).

A commercial roof inspection will keep the structure of the building safe. So make sure to include it regularly.

But where should you start, and what should you look for?

To have a successful roof inspection, please consider the following tips:

1. Start by Walking on the Roof

How does it feel under your feet?

Look for any visible damages like marked footsteps, cracks, holes, fasteners back-out, or bubbles.

Some of these damages are easy to identify.

To discover the most common causes of roof damages, click here.

2. Inspect the Rooftop Perimeter

During the commercial roof inspection, make sure to walk the entire perimeter.

Do not forget to also look for tools, heavy objects, branches, or debris.

Besides, the roofer should look for signs of mold, mildew, grease, and algae.

Roof Inspection

During the commercial roof inspection, make sure to walk the entire perimeter.

3. Rooftop Units and Penetrations

Rooftop unit penetrations are one of the most common causes of leaks.

These rooftop units can be HVAC equipment, vents, skylights, hatches, stacks, or pipes.

Ensure all seams in these rooftop units are watertight.

4. Flashings, Roof Edges, and Seams

Flashings become vulnerable when the sealant fails, be sure to examine it and determine if they are performing well.

In addition, check for any splits at the edge. Many roofing contractors often forget this.

Lastly, open seams will leave the roof exposed to moisture and water damage.

5. Gutters, Scuppers, and Drains

Keep an eye on items blocking the drainage system, such as leaves, debris, or dirt.

Also, check all the seals on the gutters, scuppers, and drainage system to ensure they are correctly operating.

Water always needs to find its way out and around any obstacle.


A damaged roof can quickly disrupt the activities of any business and can impact its profitability.

In other words, a commercial roof inspection can save you thousands of dollars. In addition, you will be able to prevent damages at an early stage.

If you do not know how to do it, you should hire a professional to complete the whole checklist and take it off your hands.

Contact Instacoat Premium Products and ask for a consulting call!