Whether you are considering a flat roofing system or have one already, our expert Seattle-area roof installers can help with any flat roof issue you may be facing. Serving Western Washington since 2006, our many years of experience make us a valuable asset when it comes to installing and maintaining your flat roof. Using only the best materials including vinyl roof membranes, we make sure our flat roof installation and repair services are always done right, so customers like you can have the peace of mind you deserve.
Why We Choose Vinyl for Flat Roof Installation
There are two kinds of vinyl roof membranes: polyvinyl chloride or PVC and thermoplastic polyolefin or TPO. PVC and TPO sheets are made out of flexible plastic materials that are welded together to create a seamless sheet covering for your entire roof. Unlike other materials like wood, these plastic sheets can last 25 years or more with proper maintenance.
Here are some characteristics of heat-welded PVC and TPO sheet roofing:
- Flexible even in cold weather
- Class A fire resistant
- Puncture and tear resistant
- Holds up well to standing water
- Chemicals and grease resistant
- Available in many different colors
Our Flat Roof Installation Process
At Pro Roofing NW, we firmly believe that our experienced greater Seattle area roof replacement contractors are the best in the field. It’s not just the care we take, it’s the techniques we use. For example, one of the problems with PVC and TPO is they don’t breathe, so water vapor is unable to pass through. If the roof is simply covered with a sheet of PVC, as many other flat roof installers do, condensation will get trapped from inside the home and form leaks.
Fortunately, we are the experts when it comes to flat roof installation as well as repair. We follow strict quality and safety protocols to ensure a reliable and efficient flat roofing service.
Our installation process is as follows:
- After removing your old roof, we fully remove any rotten or worn foundation and install only with strong and carefully selected material such as vinyl roof membranes
- We then apply ice and water shield, which is a waterproof but breathable product, to the roof deck
- We apply a separator sheet designed to absorb small quantities of moisture
- We place the PVC or TPO sheeting
- We ensure proper roof ventilation in order to prevent and mitigate the need for costly flat roof repairs later on
Our Western Washington roofing experts install two kinds of vents on flat roofs. One vents the attic under the roof while the other vents the separator sheet, so any water or moisture can easily pass through.
What are the Benefits of Flat Roofing?
For both residential and commercial buildings, there are significant benefits that make a flat roof well worth the choice. The main reason for many is cost savings: Installing a flat roof saves money on material and installation costs, and on heating bills every year after. As heat rises, it’s drawn to the heights of a traditional angled roof, requiring more energy to heat the inside of the building. A flat roof retains heat in the main part of the building, saving significantly on heating costs.
Another main benefit to installing a flat roof is the opportunities it presents: An apartment complex, office building, or other shared space with a flat roof may have a rooftop garden, lounge, or green roof to provide a gorgeous community space that raises the value of the properties within. A flat roof may also be essential to a business such as a hospital that requires helicopter accessibility, or a parking structure seeking to maximize available spots. While there are many benefits to installing a flat roof, there are also considerations to prevent costly problems in the future.
Are There Any Common Problems with Flat Roofing to Watch Out For?
Yes, flat roofs have their own set of common problems and challenges that you should be aware of and watch out for. Regular inspections and proactive maintenance can help prevent these issues from becoming major problems. Here are some common problems associated with flat roofing:
- Water Ponding: Flat roofs are prone to water ponding or pooling, especially if the drainage system is inadequate or blocked. Prolonged standing water can lead to roof membrane deterioration and leaks.
- Leaking: Leaks are a significant concern with flat roofs. They can occur due to damaged or deteriorating roofing materials, failed seams, or improperly installed flashing. Regular inspections are essential to catch leaks early.
- Blistering and Bubbling: Over time, moisture can become trapped between the layers of roofing materials, leading to blistering or bubbling of the roof surface. This compromises the integrity of the roof and can lead to leaks.
- Flashing Issues: Flashing, which is used to seal roof penetrations (such as vents, chimneys, and skylights), can deteriorate or become loose over time. Damaged or improperly installed flashing is a common source of leaks.
- Deterioration from UV Exposure: UV radiation from the sun can cause roofing materials to break down over time, leading to cracks, loss of flexibility, and reduced lifespan.
- Ice and Snow Accumulation: In cold climates, ice dams and snow accumulation on a flat roof can lead to water infiltration and damage when the snow melts and refreezes.
- Punctures and Mechanical Damage: Foot traffic, dropped tools, or other mechanical damage can puncture the roofing membrane or damage the surface, leading to potential leaks.
- Lack of Maintenance: Neglecting regular maintenance, including inspections and necessary repairs, can exacerbate all of the above problems and significantly reduce the lifespan of a flat roof.
How Can I Extend the Life of My Flat Roof?
To address the common problems listed above and extend the life of your flat roof, it's essential to have a proactive maintenance plan in place. Regular inspections by a professional roofing contractor can help identify issues early, and timely repairs can prevent more extensive and costly damage. Additionally, keeping the roof clean and free of debris, as well as ensuring proper drainage, is crucial for flat roof maintenance.
Our company is based out of the Seattle area, but we serve other areas throughout King County, Pierce County, Snohomish County, and Kitsap County. If you are considering a flat roofing system in any of these areas, our award-winning flat roofing contractors are available. We will take the time to do your installation right.
“Pro Roofing was excellent from start to finish.” - Anonymous