(206) 231-5936


(206) 231-5671

Click Here To Call

WA – (206) 231-5936

Click Here To Call

OR – (206) 231-5671

underdeck weather protected

Serving the Greater Seattle & Portland Area.

Maximize the space under your deck with our UnderCover System Solutions.

Grey undercover deck solution

Undercover Systems Pacific Northwest provides clients with a dry, functional outdoor living space by finishing the underside of your deck with a ceiling. Our underdeck roofing system channels water into your gutter system while dramatically improving exterior views without sacrificing headroom or aesthetics. Our underdecks are constructed out of washable, mold-resistant panels that are easy to remove and replace for plumbing or electrical access. Our underdecks are custom built to fit in with your existing style and come in a wide variety of colors.


The Undercover Systems Pacific Northwest team has been building exquisite outdoor living spaces with our patented underdeck process since the 1990s. Our wealth of experience is unmatched nationally, and we partner with you to ensure that all aspects of the design and installation process move seamlessly. We are proud to offer an exclusive lifetime warranty on every underdeck system that we create for as long as you own your home.

Expand Your Living Space

Underdeck Roofing

Underdeck Roofing

Waterproof Pergola

Watherproof Pergolas

Living room under deck

Outdoor Living Space

Outdoor Living Furniture

Are you ready to buy outdoor furniture for your new and dry under deck living space? We have teamed with a few companies to bring you top-quality furniture. 

Outdoor Furniture Set

What Are the Benefits of an Underdeck System

  • RProvides a year-round outdoor space for entertaining, dining and outdoor enjoyment (they are the perfect spot for a hot tub!)
  • RIncreases home value significantly
  • RIncreases home value significantly
  • RMakes your home feel bigger by dramatically increasing dry, usable space
  • RProtects your deck by ensuring that water or debris to not come into contact with crucial deck elements
Underdeck living room

UnderCover Systems Affiliations