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Window and door replacement by Everlast Window and Door, Seattle, WA

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Simpson Door


Simpson has been making doors within the forests of Washington state since 1912. Generations of families have dedicated their lives to creating the finest doors in America. It's a team effort requiring creativity, engineering, innovation and experience. So when you choose a Simpson door, you are not only getting a finely handcrafted piece for your home, you are getting a part of our home as well.

Simpson's comprehensive line of interior and exterior stile and rail doors includes hundreds of standard options from panel to French to decorative entry doors with matching sidelights and transoms. Available in a variety of wood species, sizes and glass options, Simpson provides customers with the door they desire, whether it is a standard design or a one-of-a-kind custom door.


Over a century ago, we set out to make doors that homeowners would be proud to call their own. But before we could do that, the doors had to first exceed our expectations. Today, that pride takes many forms, from our total commitment to safety to our reputation as pioneers of new products to creating doors with the quality our customers have depended on for decades. And that pride also takes shape in our commitment to natural resources and our environment.


The Simpson Family of Companies have a long, proud history of research and innovation. We have been pioneers in sustainable forestry and were early and enthusiastic supporters of the Sustainable Forestry Initiative® (SFI®). Simpson affiliates have earned high praise for their groundbreaking habitat conservation plans for protecting fish and wildlife and were the first private landowners in the country to successfully develop and implement a plan for the Northern Spotted Owl in California.

These works are based on some fundamental principles that make up our environmental policy:

  • Foster a beyond-compliance philosophy in our business such that operations achieve or exceed all applicable environmental laws and regulations.
  • Make environmental considerations a priority in operating existing facilities and planning new ones.
  • Set meaningful, measurable goals for environmental performance and implement environmental management systems that track progress toward these goals.
  • Minimize effects on the environment and work to continuously improve environmental performance through practices such as pollution prevention and resource conservation.
  • Educate our employees on their responsibilities for environmental compliance and management.
  • Certify that our fiber and wood purchasing practices foster sustainable forest management and the wise use of America’s most abundant renewable resource.
  • Regularly review and update our environmental performance and management systems.


We’re honored to work with such a resource as wood. An extraordinary building material, no alternative comes close to its abilities to conserve energy and address global climate change. Further, wood is naturally renewable as the resource is continually growing. Net annual growth for the nation’s commercial forests exceeds harvests and losses to insects and disease by an impressive 50 percent each year.


Nature gives us an incredible resource to work with and we are conscientious to do everything we can to manufacture a product that is efficient, avoids waste and diminishes pollutants.

We purchase raw lumber and door components from responsible and reliable suppliers that subscribe to sound forest management practices, many of which are certified by a third party. We can also make doors with virtually unlimited choices of wood species.

We make the most of the natural resource in our manufacturing processes. Simpson was the first national stile and rail door manufacturer to move to engineered stiles and rails as a standard practice. This type of construction allows us to use the most of our resources and results in stronger, more stable components for our doors. And, wood waste is used as fuel for powering equipment at our facilities.

Simpson doors have no added urea-formaldehyde (NAUF), which minimizes potential pollutants and improves indoor air quality. Further, Simpson doors are CARB (California Air Resource Board) Phase 2 Compliant and have received certification of the lowest possible emissions of formaldehyde in a wood based product for volatile organic compounds (VOCs).*

* The 4-star certification comes from the Japanese Ministry of Land, Infrastructure and Transportation, one of the first international agencies to require VOC testing.


No other commonly used building material requires as little energy to produce as wood.
Wood is resistant to heat, frost, corrosion and pollution.
Using wood products reduces the need to burn fossil fuels for concrete and steel-based products, which reduces the amount of greenhouse gases released into the atmosphere.
Wood removes pollutants from the air, rather than emitting them, sequestering greenhouse gases.
Wood is an efficient insulator because its cellular structure contains air pockets that limit its ability to conduct heat.


We are strong supporters of third-party certification and green building programs. Their efforts have elevated home and building product design and development. And as the parameters of these programs are fine-tuned over time, we applaud those that include a lifecycle assessment as part of their evaluation.

Our manufacturing and purchasing practices are continually reviewed and improved to meet the changing needs of the market and our natural environment. But what has remained nearly unchanged for decades is our core policy to do more in respect to the world around us. And that’s something we are very proud of.

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About Us

License no. EVERLWD902MM

Everlast Window and Door is a Seattle-based company specializing in residential and commercial window installation. Everlast is a certified Milgard dealer, (including the Essence line,) PSE Tier-1 Provider, EPA Lead-Safe Certified, member of the MBA, as well as an accredited business with the BBB.

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