In This Guide
- Step 1 – Apply Knotting Solution
- Step 2 – Prime the Timber
- Step 3 – Rub Down & Tack After Priming
- Step 4 – Apply First Undercoat
- Step 5 – Apply Second Undercoat
- Step 6 – Apply the Top Coat
- Quick-Reference Checklist
Painting new timber is all about careful preparation and technique. Every stage matters, from sealing the knots to laying down that final crisp top coat. Follow this guide and you’ll achieve a finish that’s both beautiful and built to last.
Step 1
Apply Knotting Solution
Before anything else, treat any resinous knots in the timber with a knotting solution. Knotting, typically a shellac-based sealant, prevents resin from bleeding through your finished paint layers, which would otherwise cause unsightly staining or discolouration over time. Apply it directly to each knot, allow it to dry fully, and then proceed to priming.
Pro Tip: Don’t skip knotting on timber that looks knot-free at first glance. Resin can still be present beneath the surface, especially on softwoods like pine, and it will work its way through your paint as temperatures change.
Step 2
Prime the Timber
Apply a quality wood primer, such as Dulux Trade Uni-Primer, to create a solid, sealed surface. Primer serves two purposes: it helps your subsequent coats adhere properly, and it provides the timber with its first layer of protection against moisture and wear. Apply evenly and allow to dry fully before moving on.
Step 3
Rub Down & Tack After Priming
Once the primer is fully dry, lightly rub down the surface with fine abrasive paper (120–180 grit), working in the direction of the grain. This smooths out any raised grain or surface imperfections left by the primer. Always follow up with a tack rag, wiping over the entire surface to remove every trace of dust and debris before applying paint.
Pro Tip: A tack rag is non-negotiable. Even dust you can barely see will create a gritty texture in your finish. Take thirty seconds to wipe over thoroughly, it makes a visible difference in the final result.
Step 4
Apply the First Undercoat
Use a professional-grade undercoat such as Dulux Trade or Johnstones Trade. A quality undercoat builds opacity, helps the top coat achieve its true colour, and adds durability to the overall system. Apply evenly, allow to dry fully, then repeat the rubbing down and tack rag process before the second coat.
Step 5
Apply the Second Undercoat
A second undercoat adds extra durability and colour depth, creating the perfect foundation for your final finish. It also helps eliminate any thin spots from the first coat. Once dry, rub down and tack again, this step is just as important between undercoats as it is after priming. The smoother the base, the better the top coat will perform.
Pro Tip: Two undercoats might feel like extra work, but this is where professional results are made. Skipping the second coat is one of the most common reasons a gloss finish looks uneven or loses its depth within a year.
Step 6
Apply the Top Coat
Complete the job with your chosen top coat. A satin gloss delivers a crisp, modern appearance with excellent light reflectance, while an eggshell finish offers a softer, more traditional look that’s slightly easier to touch up over time. Whichever you choose, apply with care and a quality brush to achieve a smooth, flowing finish. Each stage you’ve completed feeds into this final result, protecting the timber from moisture and wear while enhancing its natural beauty.
Quick-Reference Checklist
- Apply knotting solution to all resinous knots, allow to dry fully
- Prime with a quality wood primer (e.g. Dulux Trade Uni-Primer)
- Rub down with 120–180 grit abrasive paper, working with the grain
- Wipe over with a tack rag to remove all dust
- Apply first professional-grade undercoat
- Rub down and tack again between coats
- Apply second undercoat for depth and durability
- Rub down and tack before the top coat
- Apply satin gloss or eggshell top coat for a lasting, beautiful finish
At RM Decor Solutions, we specialise in delivering high-quality finishes on all timber surfaces, interior and exterior. Our meticulous process ensures every project is completed to the highest standard, combining craftsmanship with lasting protection.