When you think about a commercial flat roof, the large rubber membrane is usually the first thing that comes to mind. But some of the most important waterproofing details are found around the edges. Gravel stop and drip edge help protect the perimeter of a commercial roof and direct water where it belongs.
For commercial buildings in Northeastern Pennsylvania, these roof-edge components can take a beating from rain, snow, ice, wind, and temperature changes. Keeping them in good condition is an important part of commercial roof maintenance.
What Is a Gravel Stop?
A gravel stop is a metal edge component installed around certain commercial flat roofs. It helps secure the roofing system at the perimeter while also helping keep loose roofing material from moving off the edge.
On some roofs, gravel stops are used with aggregate surfacing. On other systems, the metal edge provides an important termination point for the roofing membrane.
A properly installed gravel stop creates a finished roof edge and helps protect the underlying roof assembly. If the metal becomes loose, damaged, or corroded, water can find pathways into areas that should remain protected.
What Does a Drip Edge Do?
A drip edge is designed to control how water leaves the roof. Instead of allowing water to run backward underneath the roof edge or down the building’s exterior surfaces, the metal directs runoff away from the structure.
This may seem like a small detail, but commercial roofs handle a tremendous amount of water. During a heavy NEPA rainstorm, thousands of gallons can move across a large commercial roof.
If the roof edge is not properly protected, repeated water exposure can contribute to deterioration of the roof deck, fascia, insulation, and other building components.
Why Roof Edges Need Regular Inspection
Commercial roof edges are especially vulnerable to wind and weather. Strong winds can loosen metal components. Ice and snow can put additional stress on the edge. Expansion and contraction from changing temperatures can also affect fasteners, seams, and metal connections.
During a commercial roof inspection, a professional should look for:
- Loose or missing fasteners
- Bent or damaged metal
- Rust or corrosion
- Open seams
- Separation from the roofing membrane
- Signs of water intrusion
- Improper drainage around the roof perimeter
Small problems are generally easier to address before they become larger roofing repairs.
Protect Your Commercial Roof
Whether your commercial building has an EPDM rubber roof or another low-slope roofing system, the perimeter deserves attention. Gravel stop and drip edge are more than finishing details. They are part of the roof’s overall water-management and protection system.
At The Flat Roof Guys, we specialize in commercial and residential flat roofing throughout Northeastern Pennsylvania. If you are concerned about damaged metal edging, leaks, or the condition of your commercial flat roof, give us a call at (570) 332-1223 or email office@theroofrepairguys.com.
Proper roof-edge protection can help keep water outside and protect your commercial building for years to come.
