Staining and Sealing a Deck: Timing, Products, and Cost

How often is often enough

Most wood decks want cleaning every year and stain or sealer every two to three years. South- and west-facing decks in full sun lean toward two; shaded decks can stretch to three. The water test tells you when: sprinkle water on the boards — if it soaks in instead of beading, the protection is gone.

Choosing a finish

• Clear sealer — shows the grain, least pigment, shortest protection
• Transparent or toner — light color, good grain visibility
• Semi-transparent — the popular middle: color with visible grain
• Solid stain — looks like paint, hides weathered wood, longest-lasting

Preparation is most of the job

Stain over dirt, mildew, or old failing finish peels within a season. Professional staining starts with washing, often a brightener, and drying time before any product touches the wood. That prep is why professional results outlast a rushed weekend job — and why quotes that skip prep are not bargains.

New decks need to wait

Pressure-treated lumber ships wet and needs to dry before it will accept stain — typically a few months after construction. Staining too soon traps moisture and guarantees peeling. Your contractor can tell you whether your deck is ready during the estimate.

Get a staining estimate

The staining and sealing project page prices the work from your deck's size and condition using your local participating contractor's rates — including the prep, not just the product.