DIY Before the Holidays
DIY Before the Holidays
Flooring 101 Home Stairs, Vents and Grills Stair Installation Hardwood Tread and Riser Installation

Hardwood Tread and Riser Installation


Treads, 48" L x12w x 3/4"
Risers, 48"L x 7 1/4 W x 3/4"


Installation of solid hardwood treads and risers takes place in a single installation step, significantly reducing installation time. Solid treads eliminates the need of attaching a narrow stair-nose piece to a step, promoting safety and ease of maintenance.


  • Professional help is recommended for this project. Treads and risers require higher skill levels for proper installation.
  • For safety, stair parts must also be fully glued to the existing stair structure, loose or unsecure parts can result in injury.
  • Always work safe around power tools.
  • Severe injury can result from slipping and falling on stair treads, avoid walking on stair treads with socks, hosiery and slippery or wet shoe soles.

Recommended tool check list

  • safety glasses
  • tape measure pencil
  • hammer and 6d finish nails 1 1/2" or 2"
  • power drill
  • table saw
  • miter saw
  • 10" saw blade, 60- or 80-tooth carbide-tipped
  • urethane construction adhesive (adhesive cartrage and gun applicator recommended)


*Preparation; Treads and risers should be installed directly over stair joist or (stringers). A minimum of three supporting stringers are recommended. For safety, stair parts must be glued and nailed. Treads and risers may also be installed over secure existing treads and risers if your local building code allows. Adhere to your local building codes.

When installing over existing treads and risers, stair part must be structurally sound, flat, dry, clean, smooth, and free from paint, varnish, wax, oils, solvents, and other foreign matter. Remove existing floor coverings. Next create a 45 step-edge angle by; (a) cutting off the bullnose flush with the step riser, or (b) add wood material to the existing riser thickness to support the bullnose firmly.

INSTALLATION SEQUINCE ; refer to picture

(1) Bottom of the new risers must overlap the back of the new treads, (2) new treads must overlap top of riser.

Trim moldings can be used to hide cut edges where treads and risers meet. Side edges or gaps can be filled using color matched caulking . Stair parts should fix well, not too tight.

1.    Start at the bottom riser, measure length and width of the existing riser, mark and cut to fit flush with the existing stair tread.

2.     Glue and nail the riser in place. Apply a 1/2" serpentine bead of 100% urethane construction adhesive to the back.

(For best results; dry-fit and adjust treads and risers before applying adhesives)

(To promote adhesion, lightly sand the back before gluing) Press riser into place.

2.     Measure and cut the tread to length and width. Dry-fit, make adjustments as needed

3.    Also apply a 1/2" serpentine bead of adhesive to the back of the tread.

4.    Press tread into place. Repeat steps 1 -4 until installation is complete.

5.     For safety, stair parts must be glued and nailed. When doing so avoid damaging the surface. Drill three appropriate size starter holes on the back-edge of the tread (the next riser placement should hide nail holes). Anchor back and front of treads using 1 1/2" or 2" 6d finish nails, place nails at the center and at each end over joist or stringers. Set nails using a nail punch, avoid over-nailing.

6.     When installing over concrete, adhere with 100% urethane construction adhesive, weights can be placed over stair parts until adhesives have set. Allow 24 hours curing time before permitting stairs traffic.

* consult with your local building codes.

Installation or product assistance contact Lumber Liquidators Technical and Installation 1-800-366-4204

Flooring 101 Home Stairs, Vents and Grills Stair Installation Hardwood Tread and Riser Installation