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Step 2 · Prepare Stair Subfloor

Once the old treads and risers are removed, thoroughly clean the exposed stair stringers and subfloor. Use a stiff brush or broom to sweep away all dust, debris, and old adhesive. Inspect the subfloor for any damage, such as rot, cracks, or soft spots. Repair any damaged areas using wood filler for minor imperfections or by cutting out and replacing severely damaged sections with new plywood or OSB. Ensure that all surfaces are flat and free of obstructions. If any stringers appear weak or damaged, reinforce them or replace as necessary before proceeding.

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Step 2 · Prepare Stair Subfloor

Once the old treads and risers are removed, thoroughly clean the exposed stair stringers and subfloor. Use a stiff brush or broom to sweep away all dust, debris, and old adhesive. Inspect the subfloor for any damage, such as rot, cracks, or soft spots. Repair any damaged areas using wood filler for minor imperfections or by cutting out and replacing severely damaged sections with new plywood or OSB. Ensure that all surfaces are flat and free of obstructions. If any stringers appear weak or damaged, reinforce them or replace as necessary before proceeding.

Videos for this step

Prepare Stair Sub-StructurePrepare the StairsClean and Prepare the Stair Subfloor

Tools and Materials

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How to Install Treads and a Landing Pad on L-Shaped Stairs

Step 2 of 5·9 hr left

Remove Old Treads and Risers
120 minutes7 items
2
Prepare Stair Subfloor
90 minutes6 items
3
Measure and Cut New Treads and Landing Pad
150 minutes9 items
4
Install New Treads and Landing Pad
180 minutes9 items
5
Install Risers (if applicable) and Finishing Touches
120 minutes7 items
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