Common causes
Loose substeps, gaps, dried adhesive, old fasteners, framing movement, and worn carpet-covered stair structures can all create sound.
Why inspection matters
Installing a pretty surface over a moving stair can transfer the problem into the new finish.
What FIR checks
During the estimate and prep process, FIR looks at the stair layout, existing surface, movement, damage, and repair needs.
Next step
Send FIR a few photos of the rooms or staircase, your city, step count or square footage, and the material direction you like. The estimate can then explain material, labor, prep, stairs, trims, transitions, delivery, and timeline in one clear scope.