How to Stain Fir Window Trim
- 1). Sand the trim to create an even and smooth surface. Start sanding with a 120-grit sandpaper and finish it with a 220-grit sandpaper. Sand in the direction of the wood grain.
- 2). Wipe down your trim with a rag dampened with water if your stain is water-based or mineral spirits if your stain is oil-based.
- 3). Condition the wood to help block some of the wood pores. This will ensure a uniform appearance when the stain is applied. Use a water-based conditioner if you are applying a water-based stain or an oil-based conditioner if you have selected an oil-based stain. Paint the conditioner in the direction of the wood grain. Follow the directions on the can for further application instructions and drying time.
- 4). Apply an even coat of stain in the direction of the wood grain with a brush or rag and rub the stain into the wood with a rag. Allow the stain to sit on the trim for 30 seconds.
- 5). Wipe off any excess stain in the direction of the wood grain with a clean, dry rag, pressing only lightly.
- 6). Allow the stain to dry for at least four hours, applying additional coats as necessary.
- 7). Apply a finish sealer. Use a polyurethane sealer if you used an oil-based stain or a water-based sealer if you used a water-based stain. Paint on the sealer following the instructions on the can for further application instructions and dry-time. Apply at least three coats or until the desired sheen is achieved. Always allow each coat to dry before applying another. Sand between coats with a 220-grit sandpaper.
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