(206) 735-1286Get a quote
Blog / Snohomish County

How to Protect a New Cedar Fence in the Rainy Northwest

By the Larchmont crew · July 2026 · 6 min read

How to Protect a New Cedar Fence in the Rainy Northwest
How to Protect a New Cedar Fence in the Rainy Northwest

A new cedar fence looks great on day one and has zero protection from our weather. Here is how to protect a new cedar fence in the PNW so it does not go gray and rough in a year.

Let new cedar dry first

The first rule of protecting a new cedar fence is to not seal it too soon. Fresh lumber often shows up damp, and if you trap that moisture under a sealer you get a blotchy finish that will not last. Let the wood dry out for a few weeks of decent weather first. In the PNW that means you wait for a real dry stretch, which takes some patience.

Then seal it right

Once the wood is dry, put on a penetrating stain or sealer with two things on the label: UV blockers and water repellent. UV protection slows the gray, water repellent keeps the rain out. Skip the cheap film-forming stuff that sits on top. You want a product that soaks in. Apply it on a dry day and give it time to cure before the next storm rolls through.

Recoat before it fails

Sealer is not one and done. It wears out, faster on the sunny south-facing side, slower in the shade. Check it once a year by flicking water on the boards. If it beads, you are fine. If it soaks in, it is time to clean and recoat. Staying ahead of it is a light afternoon. Letting it go means starting over with a gray, rough fence.

Keep sprinklers, soil, and moss off

Protection is not just coating. Aim sprinklers away from the fence, because a board that gets soaked every morning will fail no matter what you put on it. Keep soil and mulch from piling against the bottom rail, which wicks moisture up into the wood. And knock moss off early, especially on the shaded north side, before it roots in and holds water against the boards.

Get it right the first time

Protecting a cedar fence is not hard, it just has to be done in order and at the right time, which is the part our weather fights you on. Dry, seal, recoat, keep water off. If you would rather hand it off, we build and finish fences as one job and back it with a written warranty. Doing it right once beats redoing a gray fence later.

Common questions

How long should I wait to seal a new cedar fence?Let it dry out first. Fresh cedar is often damp, and sealing wet wood traps moisture and gives a blotchy, short-lived finish. Wait for a few weeks of dry weather, then flick water on a board. If it soaks in rather than beads, the wood is ready to seal.
What should I put on a new cedar fence in the PNW?A penetrating stain or sealer with UV blockers and water repellent. The UV part slows the gray, the water repellent keeps rain out, and penetrating means it soaks in instead of forming a film that peels. Apply on a dry day and let it cure before the next rain.
How do I keep moss off my cedar fence?Keep the boards dry and clear growth early. Aim sprinklers away, keep soil and mulch off the bottom rail, and trim back plants that trap shade and damp. When moss shows up on the north-facing side, clean it off before it roots in. Sealed wood resists it better than bare.
Built and sealed in one go.

We set posts deep in concrete, let the cedar dry, and put the first coat on before we call the job done, so your new fence isn't standing bare through its first fall. The warranty terms come with the contract, where you can read them.

Fence building, start to finish →
☎  Larchmont hotline
One number, any hour
Call when you spot it. Whoever answers can usually tell you whether that stain means the pan or the grout, and set up the walkthrough from there.
☎ (206) 735-1286Free quote →