A commercial roof system depends on a reliable waterproofing layer. When owners evaluate replacement options, understanding how the membrane functions is essential. A single-ply membrane roof system serves as the primary barrier against water intrusion and must integrate correctly with insulation, walls, curbs, and penetrations to perform as designed.
What Makes A Single Ply Membrane Roof The Waterproofing Layer
Where The Membrane Sits In The Roofing System
The membrane is the top layer of the system. It goes over the insulation board and continues up and over walls to create the waterproof surface.
How Single-Ply Membranes Get Attached
Single-ply membranes are usually glued down, but they can also be laid down with ballast or mechanically attached. We explain these options so the attachment choice matches the building in real projects.
Key takeaway: A single-ply roof performs when the membrane covers the insulation board, turns up and over walls, and uses the right attachment method.
The Three Main Single-Ply Membrane Options
There are three different types of single-ply systems.
- EPDM is a rubber membrane.
- TPO is a thermoplastic membrane that is typically white.
- PVC is also usually white.
What White Membranes Can Do For Cooling Costs
White TPO and white PVC membranes offer reflectivity. On large commercial buildings, that reflectivity can help keep some cooling costs down in the summertime.
Pro tip: If you are deciding between black and white, ask how roof color and climate affect your choice on a commercial building.
Need expert help with a single-ply membrane roof? Contact Precision Roofing for a free consultation.
Why Single-Ply Roofing Systems Are Used So Often
Versatility Around Penetrations With Pre-Made Accessories
Single-ply systems are popular because they are easily applied to different roofs and are versatile. Commercial roofs often include penetrations such as curbs and pipes. These systems also have many pre-made accessories, including pipe boot accessories, that are easily applied in those areas.
Flexibility To Go Up And Over Walls
The membrane can turn and go up and over walls to waterproof commercial buildings. That flexibility, plus the accessories used around penetrations, is a major reason these systems are common.
Key takeaway: Single-ply systems stay popular because they handle penetrations with accessories, transition up and over walls, and can offer reflectivity benefits in white membranes.
How We Help Owners Choose The Correct System
Building Height, Wind Speeds, And Attachment Preferences
Building height matters, and wind speeds matter. These factors determine whether an owner wants a mechanically attached system or a fully adhered system, so we connect the attachment method to the building’s conditions.
Roof Color, Location, Penetrations, And Roof Use
Roof color can be a deciding factor, and location plays a role. Owners in hot southern climates may prefer a white roof, and owners in northern areas may evaluate color differently. Penetrations also matter; restaurants often lean toward PVC because grease traps and chemicals can sit on the roof, and PVC is a great product for that exposure, while TPO or EPDM may fit better in other circumstances.
If you want a clear recommendation based on your building, contact Precision Roofing to review options and install the right single-ply membrane roof.
