Need a High-Performance Flat Roofing Option? 

If you’re a resident of Western Washington who is dealing with a failing flat roof, Green City Window Door & Siding offers a robust solution designed to resist leaks, withstand the local climate, and enhance your home's energy efficiency. Based in Bothell, we’re an experienced roofing company offering flat roofing products from Malarkey that provide superior protection and can significantly improve the overall thermal performance of your home. We’d love the opportunity to demonstrate the customer-focused service that has helped us earn an A+ rating with the Better Business Bureau. 

About Flat Roofs 

Flat roofing systems differ significantly from traditional asphalt shingles in both structure and materials. Flat roofs provide a continuous surface that is particularly beneficial for residential structures that require efficient water drainage and space utilization, such as modern homes and extensions like garages or porches. These roofs are essential for designs where sloped roofs would be impractical or aesthetically displeasing. 

General Benefits of Flat Roofing 

Flat roofs offer a multitude of advantages, so it’s no surprise that they’re a preferred choice for many homeowners. The flat roofs we install are known for their: 

• Weather protection – Flat roofs are built to withstand the harsh weather conditions of Western Washington, from heavy rain to intense winds.

• Longevity – When installed correctly, flat roofs can last as long as sloped roofs and deliver decades of service.

• Energy efficiency – Flat roofs can be equipped with materials that reflect sunlight, significantly reducing heat absorption and lowering energy costs.

• Ease of maintenance – The simple structure of flat roofs makes them easier to inspect and maintain compared to more complex roofing systems.

Our Superior Single-Ply PVC Roof Membrane 

At Green City Window Door & Siding, we install high-quality single-ply PVC roof membranes known for their durability and performance. Here are some of the factors that make our PVC membrane the best choice for your roofing needs: 

• Wind uplift resistance – Our single-ply membrane is ideal for both low-rise and high-rise buildings, as it provides stability in fierce winds.

• Durability – Our PVC membranes are resistant to dampness, ponding water, and extreme pH conditions, so they deliver long-lasting performance without compromising warranty protections.

• Fire safety – Unlike some other roofing materials, our PVC roofing resists flames.

• Environmental resistance – Capable of withstanding diverse types of pollution, our membranes exceed industry standards for longevity.

• Energy savings – With high solar reflectivity, our white PVC membrane can reflect up to 90% of incoming heat, reducing energy consumption and potentially paying for itself through lower energy bills.

• Color variety – We offer several colors, so you can fit your home's aesthetic seamlessly.

We Stand Behind Our Flat Roof Installation Services 

Green City Window Door & Siding's flat roof installation services are carried out by a team of licensed, certified, and insured professionals. To ensure that our customers enjoy peace of mind about their investment, we stand behind our installations with a five-year workmanship warranty. 

Choose Expert Flat Roof Installation 

Don't wait for your flat roof problems to escalate. Contact Green City Window Door & Siding today to learn more about the flat roof installation and replacement services we offer to homeowners in Bothell and throughout Western Washington. With more than 50 years of experience, we are proud to be the region’s trusted flat roofing contractor.   

Flat Roofing FAQs  

If you’re interested in a flat roofing project at your home in Western Washington but have some questions for our trusted experts at Green City Window Door & Siding, we’d be happy to answer them for you and provide you with all of the information you’re looking for. For now, though, feel free to read through some of the frequently asked questions we get from homeowners about flat roofing, the flat roofing services we offer, and more: 

What Types of Flat Roofing Systems Do You Offer? 

When you turn to Green City Window Door & Siding for your project, you’ll find that we offer high-quality, single-ply PVC roof membranes that are built to provide exceptional durability and performance in the long run. Not only that, but these roofing systems are outstanding for energy efficiency, as they can reflect up to 90% of incoming heat. 

Are Flat Roofing Systems Suitable for Rainy Weather? 

As a homeowner in Western Washington, you’re surely used to having to make decisions based on rain and the area’s climate in general. The good news is that yes, flat roofing can be a great option for rainy areas—especially when properly designed, constructed, and maintained. They drain well, possess waterproof membranes, and are equipped with durable flashing and seals to help them hold up in the rain long-term. 

How Long Does a Flat Roof Typically Last? 

Flat roofing systems are typically known to last between 15 and 30 years depending on the material used and how well-maintained the roof is. We’d love to schedule you for a consultation so that we can further discuss the factors that play into the lifespan of a flat roof. 

Do Flat Roofs Require More Maintenance Than Pitched Roofs? 

That can sometimes be the case, as the lower slope of a flat roof can leave them more vulnerable to debris buildup, membrane wear and tear, and at times, pooling water that can lead to leakage. 

Can a Flat Roof Be Used As a Rooftop Patio or Green Roof? 

Flat roofing systems can be used for rooftop patios or green roofs, though they have to be properly equipped to do so. There are certain safety factors and features you’ll need for a rooftop patio, while reinforcements and a high-quality drainage system will be key for a green roof.