Choosing a Finish for Wood Fences and Gates in Marine Fog

A fence finish does one job: it slows how fast water enters and leaves the grain. Every painting teardown carlsbad house painters black forest meadery has logged on an old fence shows the same thing, that the finish failed from the bottom and the back where boards stay damp, not from the sunny face. Wood fences and gates around Carlsbad, CA live in a cycle of summer marine fog and a short, wet winter, and the finish has to cope with both.

Why fences split and peel

Wood that swells and shrinks all year splits along the fibres, and the film follows it. Stain soaks in and wears away evenly, while paint sits on top and holds a hard edge until it cracks. Neither is wrong, but they fail in different ways, and the choice depends on how the boards look today.

Stain versus paint on boards

Semi transparent stain suits weathered boards and needs only a wash and a light sanding before it goes on with a sprayer or a roller with a thick nap. An acrylic or latex paint gives a solid colour and hides patched boards, but it needs a primer on bare wood and two coats to reach the mil thickness that resists fog. Oil based primer blocks tannin bleed on cedar and redwood.

Board ends, rails and the back side

End grain drinks water like a straw. Brush primer and topcoat into every cut end and the bottom edge of each picket, and finish the back of the board as well as the front. Fill nail holes and open splits with caulk made for exterior wood, not spackle, because spackle crumbles once it gets wet. Patching a few rotten boards beats painting over them.

Gates and hardware

A gate moves, so the film flexes at the latch side and around the hinges. Remove the hinges and latch, scuff sand the rubbing edges and coat the edge that meets the post. Gates near the lagoons stay damp longer, and a coat of enamel on the frame holds up better than flat. Check the hinge screws for rust before closing it up again.

When the wood is too wet to coat

Fog leaves a heavy dew on a fence even on a sunny day. Press a dry rag on a board in the morning and see if it comes away damp. Dry, warm boards are ready, and damp ones will trap moisture and blister the finish inside a season. Late summer and early fall in Carlsbad usually give the longest dry spells for this work.