Stairs FAQ
5 questions answered by NSW's only Bona Premier Dealer.
Stairs (5)
Can changing floor coverings on stairs cause compliance issues?
Yes, even small changes in floor coverings can throw stair measurements out of tolerance. If you replace carpet with a timber overlay, you can end up with compliance issues against the National Construction Code dimensional requirements. It's something you've got to check before you start -- a good floor sander understands stair compliance and makes sure all the work meets code.
What slip resistance standards apply to timber stairs?
Slip resistance standards have applied to domestic stairs since 2014, and the Building Code of Australia requires slip resistance for commercial building paths of travel. AS4586 governs new surface classification, and testing methods include wet pendulum, dry floor friction, and inclining platform tests. Your floor sander needs to make sure any stair coatings meet all the applicable slip resistance standards -- it's not optional.
What is the difference between P-class, R-class, and CoF slip resistance ratings?
P-class ratings come from wet pendulum testing, R-class from inclining platform tests, and CoF (Coefficient of Friction) from dry floor friction testing. These ratings appear on product data sheets and verify compliance with slip resistance requirements. When you're choosing a coating system, make sure it meets the required slip resistance classification for your application.
Are stair nosing profiles important for safety?
Absolutely -- stair nosing profiles are critical for safety and compliance. They need purpose-built designs with non-slip inserts, secured with both adhesive and mechanical fasteners. Even small changes in floor coverings can throw stair measurements out of tolerance. Compliant stair nosing that meets all National Construction Code requirements is a must.
How do I master the art of sanding stairs?
Sanding stairs takes specialised techniques that are quite different from flat floor sanding -- you've got to pay specific attention to nosings, risers, and tight spaces. ATFA provides how-to video content on mastering stair sanding techniques. It's one of those jobs where having the right skills and equipment really shows in the result.
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