Personalized Decking & Railings for the Pacific Northwest
Expand your outdoor space and enhance the look with a beautiful wooden deck from Mt. Si Contracting. Our decks and railings are engineered to withstand both heavy weights and weather events, so you can be assured of a durable and long-lasting outdoor deck, with railings that can keep you and your guests safe.
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Cedar
Cedar is an excellent wood for decking and railings—it doesn’t warp, shrink, or split, even up to a decade after installation. It can last up to 30 years, and comes with a beautiful reddish appearance. It even has that wonderful cedar smell you love, and naturally repels insects.
Hardwood
Hardwood options are stronger than cedar, lasting between 30 and 50 years. These have much greater rot and mold resistance than even the durable cedar, hardwood is equally insect-repellent and requires little in the way of maintenance.
Composite
Composite decking is composed of a combination of wood and plastic. With a price comparable to that of hardwood, composite does not rot, never splinters, and requires practically no maintenance time. Composite is even flexible, so these decks can be made into ovals or circles to match your landscaping.
