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Safety Cue
Task-specific safety guidance for ordinary work hazards.
Project 17
Install Flooring on Stairs and Landings
Install an approved finish flooring and nosing system on one controlled stair and landing section, using verified stair geometry, material-specific fastening, and full nosing support, without altering the accepted stair's rise, run, or safety condition.
Field Cue System
These cues appear at the point of work. Stair work carries fall and trip consequences beyond ordinary floor work, so the cues in this chapter focus on geometry, support, and safe stair access throughout the project.
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Critical Safety Cue
Serious injury, a fall hazard, or a noncompliant stair condition is possible.
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Field Safety Cue
Practical work-area safety: barricading, alternate access, footing, and housekeeping.
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Code Alert
Local requirements vary. Verify permit, inspection, and jurisdictional stair rules.
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Manufacturer Cue
Follow product-specific instructions for nosing support, adhesive, and fastening.
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Measurement Cue
Reference-point, tolerance, and verification guidance.
Job Overview
This project qualifies you to install an approved finish flooring and nosing system on one controlled stair and landing section. The finished work product is a complete stair and landing finish: riser finish, tread finish, listed stair nosing with full support, and landing flooring, all installed to the exact rise, run, and nosing dimensions recorded from the structural stair.
You will measure every tread, riser, nosing, and landing; confirm the structural stair has already passed inspection; barricade the stair and provide alternate access; dry-fit and cut every finish piece to the actual stair dimensions; install riser finish, tread finish, and nosing in the specified sequence; install landing flooring; and inspect every step for movement, loose edges, proud fasteners, sharp corners, slip hazards, and trip conditions before the stair reopens to normal traffic.
This project depends on an already-accepted structural stair. It does not authorize any change to stair geometry. The Chapter 16 doorway-undercutting skill and the finish-flooring installation skills built in Chapters 6 through 13 are applied here to the added constraints of a walking surface with a fall hazard.
Skills You Will Demonstrate
- FL-097 — Inspect stair substrate for structural acceptance, damage, and geometry before finish work begins.
- FL-098 — Cut stair treads or coverings to the actual measured dimensions of each step.
- FL-099 — Install stair nosing with full support and the correct projection.
- FL-100 — Secure flooring on landings while preserving movement and transition requirements.
- FL-101 — Maintain safe edges, uniform geometry, and slip resistance across every step.
- FL-102 — Inspect the completed stair finish for movement, trip hazards, and safe reopening.
Where This Skill Fits
Stair finishing sits downstream of every subfloor, flatness, and structural competency built earlier in this book, and it applies the material-specific installation methods from Chapters 6 through 13 to a walking surface where uneven rise, an unsupported nosing, or a proud fastener is a fall hazard rather than a cosmetic defect. The measurement discipline built here — recording rise, run, tread depth, and nosing projection for every step rather than assuming uniformity — is the same discipline reused in Chapter 19's final quality inspection and in Chapter 20's capstone stair or landing interface.
This project also reinforces the stop-work discipline from Chapter 1: a stair that has not already passed a structural acceptance is not a valid stair-finishing project, regardless of how sound the tread material or adhesive system is.
Scope and Intended Use
This project covers:
- measuring every tread, riser, nosing, and landing on one controlled, already-accepted stair and landing section
- barricading the stair and providing alternate access before finish work begins
- cleaning and repairing only the finish-level stair substrate, not the structural stair itself
- dry-fitting and cutting tread, riser, plank, tile, carpet, or resilient pieces to the actual stair dimensions
- installing riser finish, tread finish, and listed stair nosing with full support in the specified sequence
- installing landing flooring while preserving movement and transition requirements
- inspecting every step for movement, loose edges, proud fasteners, sharp corners, slip hazards, inconsistent geometry, and trip conditions before the stair reopens
This project does not authorize the learner to:
- alter stair rise, run, tread depth, nosing projection, landing geometry, guard, or handrail conditions — those are structural conditions outside this finish-flooring chapter
- proceed with any finish work on a stair that is loose, uneven beyond the approved finish correction, damaged, or noncompliant with the approved stair details
- rely on finish flooring alone to support a projecting nosing
- reopen the stair to normal traffic before every unsafe condition identified during inspection has been corrected
Any stair found loose, structurally uneven, damaged, or noncompliant during this project's inspection steps must be corrected by a qualified structural professional before finish work continues.
Reference Conventions
Establish these references before any measurement or cutting begins, and do not change the defined stair or landing section mid-project.
| Term | Definition |
|---|---|
| Rise | The vertical distance from the top of one tread's walking surface to the top of the next tread's walking surface, measured at each individual step |
| Run | The horizontal distance from the face of one riser to the face of the next riser, measured at each individual step |
| Tread depth | The horizontal distance from the leading edge of the nosing to the face of the riser above, measured at each individual step |
| Nosing projection | The horizontal distance the tread nosing extends beyond the face of the riser below, measured at each individual step |
| Landing | A flat platform surface at the top, bottom, or an intermediate point of the stair run, finished as part of this project where included in scope |
| Structural acceptance | The documented condition confirming the framed or fabricated stair has already passed inspection for rise, run, support, and safety before any finish work in this chapter begins |
Stair and Landing Identification Record
Before measuring any tread, riser, or nosing, record the defined stair and landing section directly on the stair-finishing record:
Stair location (identify by room, level, or drawing reference): ______ Number of risers: ______ Landing(s) included in scope: ______
Approved finish material and nosing profile: ______ Date started: ____________ Builder name: ____________
Prerequisites
- Completed Chapter 1 Flooring-Readiness Plan and structural acceptance record for the stair and landing section
- Approved stair finish schedule, nosing profile, tread and riser dimensions, adhesive, fastener, slip-resistance, and geometry details
- Completed Chapter 16 doorway-undercutting skill where a landing interfaces with a doorway in this project's scope
- Alternate access route confirmed and communicated before the stair is barricaded
- Basic hand tools, cutting tools, fastening tools, and PPE listed in the Tools, Equipment, Materials, and PPE tables above
- A stop-work decision authority — the learner, supervisor, or licensed professional who will be notified if a structural stop-work condition is found
Common Field Fundamentals
Stair finishing applies the same substrate, layout, cutting, and fastening skills used throughout this book, with one added constraint that overrides every other consideration: the finished stair must remain a safe walking surface with uniform geometry at every step.
Structural checkStair confirmed already accepted; loose, uneven, or damaged stairs stopped before finish work begins
MeasurementRise, run, tread depth, nosing projection, and landing dimensions recorded at every step
Access controlStair barricaded and alternate access established before work begins
Riser and treadFinish installed in the specified sequence using the actual dimensions of each step
Nosing supportListed nosing installed with full support; finish flooring alone never supports a projecting nosing
Landing finishLanding flooring installed while preserving movement and transition requirements
Geometry checkUniform finished rise and tread depth confirmed across every step
Final inspectionEvery step checked for movement, loose edges, proud fasteners, and trip hazards before reopening
Structural Confirmation, Measurement, and Access Control
Every measurement taken in this chapter reflects the actual stair, not a nominal or averaged dimension. Record rise, run, tread depth, nosing projection, and landing dimensions individually for every step before cutting any finish material. Where a stair is found loose, uneven beyond the approved finish correction, damaged, or noncompliant, stop finish work at that step and escalate per the Failure Points section before continuing.
FL-097 – FL-102
Stair Substrate Inspection / Tread, Riser, and Nosing Installation / Landing Finish / Safety Inspection
Install Flooring on Stairs and Landings
A. Finished-Project Specification
Quantity: one defined stair section with every riser, tread, nosing, and included landing finished, individually measured, cut, installed, and inspected, with uniform finished rise and tread depth confirmed at every step and no unaddressed movement, loose edge, proud fastener, sharp corner, slip hazard, or trip condition remaining at project closeout.
B. Stair-Finishing Schedule
| Item | Target Condition | Verification Method |
|---|---|---|
| Structural acceptance | Stair confirmed already accepted, with no loose, uneven, damaged, or noncompliant condition present | Written record from prior structural inspection |
| Measurement record | Rise, run, tread depth, nosing projection, and landing dimensions recorded individually for every step | Direct measurement with tape measure and combination square |
| Access control | Stair barricaded with alternate access established before work begins | Visual confirmation and written record |
| Riser and tread installation | Every riser and tread piece cut to its actual measured dimension and installed per the approved adhesive and fastener schedule | Dry-fit check followed by installed-piece inspection |
| Nosing installation | Listed nosing installed with full support and correct projection at every required tread edge | Direct measurement and support inspection |
| Landing finish | Landing flooring installed while preserving required movement and transition details | Visual and physical inspection |
| Final safety inspection | Every step free of movement, loose edges, proud fasteners, sharp corners, slip hazards, and trip conditions | Full-stair walk-through inspection |
C. Material Takeoff
- Tread, riser, and landing finish material: quantity sufficient for every step and landing in the defined stair section, per the approved finish schedule, with waste allowance for individual step-cutting.
- Stair nosing: listed nosing profile matched to the tread material, sufficient in length for every tread edge requiring nosing.
- Adhesive and fasteners: the exact product and quantity specified by the manufacturer for tread, riser, nosing, and landing installation.
- Documentation: one stair-finishing record per stair section, plus photographs of measurements, dry-fit layout, nosing support, and the completed inspection.
- Access control materials: barricade or warning tape and alternate-access signage sufficient for the duration of the project.
D. Acceptance Standards
| Check | Standard |
|---|---|
| Structural acceptance | Stair confirmed already accepted before any finish-cutting or fastening step begins |
| Measurement accuracy | Every installed tread, riser, and nosing piece matches the individually recorded dimension for its step, within the tolerance stated by the approved finish schedule |
| Nosing support | Every nosing piece installed with the full support method specified by the manufacturer; no nosing relies on finish flooring alone for support |
| Geometry uniformity | Finished rise and tread depth uniform across every step, within the approved finish correction tolerance |
| Fastener condition | No proud, missing, or improperly seated fastener remains at any tread, riser, nosing, or landing location |
| Safety condition | No movement, loose edge, sharp corner, slip hazard, or trip condition remains at any step or landing |
| Documentation | Stair-finishing record complete with measurements, structural acceptance reference, installation details, and final inspection results |
E. Review, Structural Confirmation, and Measurement
- Review the approved stair finish, nosing, tread, riser, landing, adhesive, fastener, slip resistance, and geometry details. Confirm the finish schedule matches the stair section defined in the Stair and Landing Identification Record.
- Confirm the structural stair has passed inspection. Locate and review the written structural acceptance record before proceeding to Step 3.
- Measure every tread, riser, nosing, and landing. Measure each step individually rather than applying an averaged dimension.
- Record rise, run, tread depth, nosing projection, width, and transition conditions. Complete this record for every step before cutting any finish material.
- Stop work if the stair is loose, uneven beyond the approved finish correction, damaged, or noncompliant. Escalate per the Failure Points section before continuing.
F. Access Control and Substrate Preparation
- Barricade the stair and provide alternate access. Confirm the alternate route is communicated to all occupants before work begins.
- Remove only finish materials assigned to the project. Do not remove or disturb any structural stair component.
- Clean and repair the stair substrate. Vacuum dust and debris, and correct only finish-level substrate conditions assigned to this project.
G. Dry-Fit and Cutting
- Dry-fit tread, riser, plank, tile, carpet, or resilient pieces. Label each dry-fit piece to its exact step location.
- Cut each piece to the actual stair dimensions. Use the individual measurement recorded for that step, not an averaged dimension.
H. Riser, Tread, and Nosing Installation
- Install riser finish in the specified sequence. Confirm each riser piece is seated fully before installing the tread above it.
- Install tread finish using the approved adhesive and fasteners. Follow the exact coverage, spacing, and fastening schedule specified for the selected tread material.
- Install the listed stair nosing with full support. Confirm the nosing profile matches the approved schedule and achieves the specified projection at every tread edge.
- Do not rely on finish flooring alone to support a projecting nosing. Verify the full-support method specified by the manufacturer is in place before proceeding to the next step.
- Maintain uniform finished rise and tread depth. Check each completed step against the adjoining steps before installing the next riser.
I. Landing Finish and Fastener Control
- Install landing flooring while preserving movement and transition requirements. Follow the material-specific installation method from the applicable earlier chapter for the selected landing finish.
- Keep fasteners below walking surfaces and away from concealed services. Confirm fastener depth and location before moving to the next step or landing area.
- Clean adhesive or mortar before cure. Remove excess material from tread, riser, nosing, and landing surfaces before it sets.
- Protect the stair through cure. Maintain the barricade and alternate access until the specified cure or set time has passed.
J. Final Stair Inspection and Reopening
- Inspect every step for movement, loose edges, proud fasteners, sharp corners, slip hazards, inconsistent geometry, and trip conditions. Walk and load each step methodically, including the nosing of every tread.
- Correct any unsafe condition before reopening the stair. Do not remove the barricade until every condition identified in this step has been corrected and reinspected.
- Document final stair measurements and installation. Record the completed measurements, materials, fastening details, and final inspection results on the stair-finishing record.
Common Readiness Inspection
Inspect every completed stair and landing section using the same checks regardless of the finish material selected.
- Structural check: confirm the structural acceptance record was reviewed before any finish work began.
- Measurement check: confirm rise, run, tread depth, and nosing projection were recorded individually for every step.
- Access check: confirm the stair was barricaded and alternate access was provided before work began.
- Nosing check: confirm every nosing piece is installed with full support and correct projection.
- Geometry check: confirm finished rise and tread depth are uniform across every step.
- Fastener check: confirm no proud, missing, or improperly seated fastener remains at any location.
- Safety check: confirm no movement, loose edge, sharp corner, slip hazard, or trip condition remains before the stair reopens.
Complete the stair-finishing record in the Inspection Checklist section below before beginning Project 18.
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Failure Points and Troubleshooting
Cleanup
This project ends with the stair and landing section fully finished, inspected, and either reopened to normal traffic or still barricaded pending a correction identified during final inspection.
- Remove and properly store cutting tools, fastening tools, and adhesive equipment
- Clean adhesive, mortar, grout, dust, and installation residue from every tread, riser, nosing, and landing surface
- Leave the barricade in place until every item on the final safety inspection has passed
- Store the stair-finishing record with the PPE and documentation station for reference by later projects
Field Terms
- Rise
- The vertical distance from the top of one tread's walking surface to the top of the next tread's walking surface, measured at each individual step.
- Run
- The horizontal distance from the face of one riser to the face of the next riser, measured at each individual step.
- Tread Depth
- The horizontal distance from the leading edge of the nosing to the face of the riser above, measured at each individual step.
- Nosing Projection
- The horizontal distance the tread nosing extends beyond the face of the riser below, measured at each individual step.
- Structural Acceptance
- The documented condition confirming the framed or fabricated stair has already passed inspection for rise, run, support, and safety before finish work begins.
- Full-Support Method
- The manufacturer-specified backing, blocking, or fastening method that supports a projecting nosing independent of the finish flooring material.
- Landing
- A flat platform surface at the top, bottom, or an intermediate point of the stair run.
- Trip Condition
- Any uneven, loose, sharp, or projecting condition on a finished stair or landing surface capable of catching a foot or causing a fall.
Skill Check
- Why must the structural stair be confirmed as already accepted before any finish-cutting or fastening step begins?
- Why must rise, run, tread depth, and nosing projection be measured individually at every step rather than applied from a single averaged dimension?
- What must happen before finish work begins if the stair is found loose, uneven beyond the approved finish correction, damaged, or noncompliant?
- Why can finish flooring never be relied upon alone to support a projecting nosing?
- What is the required sequence for installing riser finish, tread finish, and nosing, and why does that sequence matter?
- What conditions must be corrected and reinspected before a finished stair is reopened to normal traffic?
- Why must the stair be barricaded and alternate access established before cutting or fastening begins?
- What information must be recorded on the stair-finishing record before Project 18 begins?
- How does the acceptance tolerance for uniform finished rise and tread depth relate to the individually recorded step measurements?
- Why does a proud fastener or sharp edge carry greater consequence on a stair than on a level floor?
Competency Rubric
| Competency | Independent Pass Standard | Not Demonstrated | With Assistance | Independently |
|---|---|---|---|---|
| FL-097 | Inspects the stair substrate, confirms structural acceptance, and records damage or geometry findings before finish work begins | |||
| FL-098 | Cuts stair treads or coverings to the actual measured dimensions of each individual step | |||
| FL-099 | Installs stair nosing with full support and the correct projection at every required tread edge | |||
| FL-100 | Secures flooring on landings while preserving required movement and transition details | |||
| FL-101 | Maintains safe edges, uniform finished rise and tread depth, and required slip resistance across every step | |||
| FL-102 | Inspects the completed stair finish for movement, trip hazards, and safe reopening condition, and documents the result |
Mark one column per competency. Only Demonstrated Independently awards the competency; Demonstrated with Assistance authorizes additional supervised practice but does not complete the requirement.
Inspection Checklist — Stair-Finishing Record
| Item | Target Condition | Result | Pass/Fail | Correction (if any) |
|---|---|---|---|---|
| Structural acceptance | Confirmed and referenced before finish work began | |||
| Measurement record | Rise, run, tread depth, and nosing projection recorded individually for every step | |||
| Access control | Stair barricaded with alternate access established before work began | |||
| Riser and tread installation | Every piece installed per the approved adhesive and fastener schedule | |||
| Nosing installation | Full support and correct projection confirmed at every required tread edge | |||
| Landing finish | Installed while preserving required movement and transition details | |||
| Final safety inspection | No movement, loose edge, proud fastener, sharp corner, slip hazard, or trip condition remaining |
Deficiency list and assigned corrections: ____________________________________________
Stair reopening decision: ______ (Reopened/Conditional/Barricaded Pending Correction) Date: ____________ Builder name: ____________
Performance Check
With the structural acceptance confirmed, every step individually measured, the stair barricaded during work, riser and tread finish installed per the approved schedule, nosing installed with full support, landing flooring installed with preserved movement and transition details, and every step inspected for safety, compare the finished stair-finishing record against the Acceptance Standards table and confirm the structural acceptance reference is documented, every installed piece matches its individually recorded step dimension, every nosing achieves full support and correct projection, finished rise and tread depth are uniform across every step, no fastener is proud or improperly seated, and no movement, loose edge, sharp corner, slip hazard, or trip condition remains. Complete the stair-finishing record and correct any failed item before reopening the stair or beginning Project 18. If an item fails, identify whether the error occurred in measurement, cutting, riser or tread installation, nosing support, landing finish, or final inspection before correcting it and re-running the affected check.
Project Closeout
You have completed the seventeenth project in the residential flooring sequence: installing flooring on stairs and landings. This project required you to confirm structural acceptance, measure every step individually, control access to the stair, cut and install riser and tread finish, install nosing with full support, finish the landing, and inspect the completed stair for safety before reopening it (FL-097 through FL-102).
You now have a documented stair-finishing record that carries directly into the final quality inspection in Chapter 19 and into any stair or landing interface included in the Chapter 20 capstone. That record is the reference for confirming stair safety and finish condition at every later inspection point in this book.
Retain your stair-finishing record, including every step measurement, nosing-support confirmation, and final safety inspection result. You will reference this exact record before Chapter 19's final quality inspection.