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BN90 Solid Brass Stair Nosing

Product Description

The BN90 is a solid brass stair nosing with a serrated slip-resistant 89mm tread, a square 5.0mm back edge and a 43mm bullnose riser. Designed most commonly, to be butted up to carpet, or used with CAT BNE Nap Detail.


This nosing profile can also be rebated into stone and timber stairs or used in conjunction with the BNFE30 Ramp Detail for a retrofit installation. The BN90 stair nosing is available in CAT's four signature brass finishes and can be supplied undrilled or drilled for countersunk fixings.


See more Solid Brass Nosings.

Available Finishes:

  • Polished Brass

  • Satin Brass

  • Antique Brass

  • Antique Bronze

Size Options​:

Ordered to Measure

Max Lengths

  • Polished              3.2m

  • Satin                    2.7m

  • Antique Brass     2.7m

  • Antique Bronze  2.7m

Drilling Options:

  • Drilled for countersunk screws

  • Undrilled

Slip Resistance Value (SRV's):

  • Dry - 73 PTV

  • Wet - 45 PTV

CAT Brass Nosing Finishes

Stringer angles are available in Polished Brass, Satin Brass, Antique Brass & Antique Bronze.

BN90 Technical

Data Sheet

Brass Nosing

Maintenance Guide

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