Northwest Under Decks

installing aluminum under deck drainage systems

covering all of Washington State and beyond – the official sales and installation for

Under Deck Oasis

visit for complete product profile including color choices and construction details


Aluminum under deck drainage system

America’s most trusted under deck system

Create Dry Living Space


meet with you on your site to discuss all your design build questions and prepare a professional quote


Work through any construction issues that may arise and address product options available


Manufacture your custom built, made to order product.


Usually only 1 to 3 days for most jobs to complete your project.


Your new dry under deck space is now ready – enjoy your new aluminum under deck drainage system3 and beautiful soffit living space


Even the STAIRS can be ‘under covered’ which helps to complete the under deck area appearance.

Now available in BLACK

Washington State Sales And Installation - Northwest Under Decks
David Aldridge - Northwest Under Decks

15 years experience in residential construction and 18 years in metal fabrication 

visit – Under Decks Oasis 

for detailed product information

Sales and Installation by

Northwest Under Decks — get the job done

Call 425 760 6510 to schedule an onsite visit

12760 Bel Red Rd, Bellevue WA 98005

By Appointment Only

Washington State contractor number


Certificate of insurance / bond available upon request