How to Stain Fir Window Trim
Fir is a favored wood for window trim because of its warm red and yellow tones. However, fir is a soft and porous wood, and it needs to be conditioned before staining in order to avoid a blotchy appearance. There are many tones of stain available, depending on how you want to accent your window. Lighter stains are easier to create a uniform covering and can bring out the natural tones of the wood, but darker stains can be used as well. Window trim should be stained before installing. If your unfinished trim is already installed, mask the edges to protect abutting surfaces with masking tape.
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Things You'll Need
- 120-grit sandpaper
- 220-grit sandpaper
- Rags
- Mineral spirits
- Paintbrushes
- Wood conditioner
- Wood stain
- Finish sealer
Instructions
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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.
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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.
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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.
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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.
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Wipe off any excess stain in the direction of the wood grain with a clean, dry rag, pressing only lightly.
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Allow the stain to dry for at least four hours, applying additional coats as necessary.
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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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Tips & Warnings
For filling cracks or nail holes in the wood, use a putty that matches your stain.
These materials are vaporous. Always work in a well-ventilated area when staining wood.
