Replace Stair Treads

Tools:

workbench
table saw
saw horses
carpenter’s square
nippers
small and large pry bars
tape measure
nail spacer
spacing block
old-fashioned nail puller
small sledge hammer
carpenter’s pencil
power drills
clamps
gloves
safety glasses
dust mask
replacement lumber
screws

1. First check the undercarriage of your stairs, the stringers and supports (figure A). If they're solid, just cut and replace the treads and risers.

2. Measure the existing steps (figure B).

3. Now start removing the olds treads and risers. Use the nail puller to remove stubborn nails, then go to work with the pry bars and small sledgehammer (figure C). Use the nippers to trim off any old nails, leaving a smooth surface, and replace any damaged cleats.

4. Cut replacement boards with table saw. When replacing treads, use a nail spacer to leave a narrow, even gap between tread boards so water drains easily (figure D).

5. Use a block of wood to make sure the treads are even on the ends. Put the riser that falls below the tread in place and attach to the cleats with screws. Secure treads with screws, and always drill pilot holes first. Continue until all stairs are replaced (figure E).

6. Prime and paint stairs.