Apply Protective Topcoat

What happens in this clip

After the stain has completely dried, apply a durable topcoat to protect the wood and enhance its appearance. For high-traffic areas like stairs, a product such as Varathane Floor Finish Polyurethane (High Traffic Formula, Crystal Clear Satin) is ideal. Apply the first coat thinly and evenly with a high-quality synthetic brush, working with the grain. Allow this coat to dry completely, typically 2-4 hours. Lightly sand the entire staircase with 220-grit sandpaper (or finer, as per product instructions) to remove any dust nibs and ensure good adhesion for subsequent coats. Clean thoroughly with a tack cloth. Apply a total of 3-4 coats, lightly sanding and cleaning between each coat, until you achieve a durable and beautiful finish. Allow the final coat to cure fully before heavy use.

Goal: Protect the wood with a durable, clear finish

What's used

Tools

• 220-grit Sandpaper
• Synthetic Brush
• High-quality roller for large flat areas
• Tack Cloth

Materials

• Varathane Floor Finish Polyurethane Varathane
• Bona Traffic HD
• clear protective layer over the stained wood.

About the full video

This project details the transformation of an old, carpeted staircase into a beautiful hardwood staircase. It involves removing the existing carpet and treads, precisely measuring and installing new risers and treads, laying matching hardwood flooring on the landings, and finally sanding, staining, and applying a durable topcoat for a polished, long-lasting finish.

Step 11 of 11: Apply Finish (Stain and Sealant)

If staining, apply the stain evenly with a brush or cloth, following the wood grain. Wipe off excess stain as per manufacturer instructions. Allow the stain to dry completely. Once dry, apply the first coat of sealant (e.g., polyurethane). Allow it to dry thoroughly, then lightly sand with very fine-grit sandpaper (320 grit or higher) and wipe clean. Apply subsequent coats of sealant, repeating the light sanding and cleaning process between each coat for optimal smoothness and durability. Typically, 2-3 coats are recommended for staircases.

Open this step in the guide

Every video in How to Get a Hardwood Look on Carpeted Stairs

1. Step 1: Remove Carpet and Padding

   • 0:04–0:34 Remove Old Carpet and Padding
   • 0:21–0:50 Remove the Carpet
   • 0:44–2:00 Remove Old Carpet

2. Step 2: Remove Staples and Nails

   • 0:31–0:55 Remove Tack Strips and Staples
   • 0:13–0:38 Remove Carpet and Prep for Installation
   • 1:19–1:49 Remove Staples and Protruding Nails

3. Step 3: Inspect and Repair Stair Structure

   • 0:09–0:14 Repair and Prepare Stair Structure
   • 1:40–2:44 Prepare Surface by Filling Holes
   • 3:59–6:57 Replace Damaged Stair Treads or Risers

4. Step 4: Clean and Sand Stair Surfaces

   • 1:05–1:18 Vacuum Dust and Perform Fine Sanding
   • 0:51–0:57 Strip Old Finish from Tread Surfaces
   • 0:37–0:41 Sand the Staircase

5. Step 5: Measure and Cut Hardwood Treads and Risers

   • 6:09–11:07 Measure and Cut Treads
   • 0:43–0:52 Measure and Cut New Treads
   • 3:40–6:00 Measure and Cut Risers

6. Step 6: Install Hardwood Risers

   • 0:35–0:46 Install the Riser Boards
   • 2:49–3:19 Install Retro Risers
   • 3:55–5:35 Cut and Install Stair Risers

7. Step 7: Install Hardwood Treads

   • 10:00–11:40 Install Hardwood Treads and Risers
   • 0:49–2:35 Install the Tread and Nosing Components
   • 2:35–4:25 Secure New Stair Treads

8. Step 8: Install Stair Nosing (if applicable)

   • 4:41–5:53 Cut and Install Nosings
   • 0:37–0:41 Install Stair Nose Trim
   • 13:39–14:45 Measure and Install Stair Nosing

9. Step 9: Fill Nail Holes and Gaps

   • 16:00–16:30 Apply Wood Filler for Finishing Touches
   • 0:55–1:21 Apply Wood Filler to Blemishes
   • 0:07–0:25 Inspect and Fill Imperfections

10. Step 10: Sand Repaired Areas and Final Surface

    • 2:44–3:20 Sand Surfaces and Control Dust
    • 1:21–1:35 Sand and Clean Stairs
    • 1:47–2:00 Fill and Sand Risers

11. Step 11: Apply Finish (Stain and Sealant)

    • 0:45–0:59 Apply Protective Topcoat (this video)
    • 11:09–11:34 Apply Protective Wood Top Coat
    • 2:01–2:44 Apply Polyurethane Sealer