How to Install Stair Nosings (UK): BS 8300 Compliant Guide
22nd Jun 2025
How to Install Stair Nosings: BS 8300 & UK Compliance Guide
Proper installation of stair nosings is critical for safety, accessibility, and legal compliance. Incorrect fitting can reduce slip resistance, compromise visual contrast, and violate BS 8300, Approved Document M, and fire safety regulations. This guide explains how to install stair nosings correctly in commercial, public, and residential buildings.
Refer to our UK Stair Nosing Regulations Guide for full legal requirements before starting installation.
Why Correct Installation Matters
Properly installed stair nosings ensure that:
- Step edges are clearly visible for all users
- Slip resistance is maintained
- Light Reflectance Value (LRV) contrast remains compliant
- Fire exit routes meet safety regulations
- All steps are uniform in size and placement
Tools & Materials Required
- Compliant stair nosings (DDA or commercial range)
- Measuring tape or ruler
- Pencil or chalk for marking
- Drill and screws / adhesive as per manufacturer instructions
- Spirit level for alignment
- Cleaning materials for surface preparation
Step-by-Step Installation Process
1. Prepare the Stair Surface
- Clean the tread thoroughly to remove dust, dirt, and grease
- Ensure the surface is flat and level; repair any irregularities
2. Measure and Mark
- Measure the width of each step and the intended nosing placement
- Mark where the nosing strip will sit to ensure consistency across all steps
3. Check Visual Contrast (LRV)
- Confirm the nosing provides at least 30 LRV contrast with the tread
- Adjust position or colour selection if necessary
- Reference our LRV requirements guide for details
4. Fix the Nosing
- Use screws, adhesive, or both, according to manufacturer guidelines
- Ensure the nosing sits flush with the tread to avoid trip hazards
- Verify that the nosing is secure and will not move under foot traffic
5. Confirm Slip Resistance
- Test the nosing for grip, especially on wet or external stairs
- Replace or adjust if the nosing is slippery or incorrectly positioned
- Check fire exit routes for safe navigation during evacuation drills
6. Final Inspection
- Ensure all steps are consistent in size, nosing placement, and alignment
- Verify that LRV contrast, slip resistance, and edge visibility meet compliance standards
- Document installation for building control or facilities management records
Common Installation Mistakes to Avoid
- Misaligned or uneven nosings across steps
- Insufficient LRV contrast between nosing and tread
- Loose or insecure fixation
- Using glossy surfaces that reduce visibility or slip resistance
- Failing to maintain consistency on fire exit routes
Installation Compliance Checklist
- Are all nosings aligned and level?
- Is LRV contrast at least 30 points with the tread?
- Is the nosing slip-resistant and securely fixed?
- Are all steps consistent in size and placement?
- Do fire exit routes meet Approved Document B guidance?
Compliant Stair Nosing Solutions
To ensure both safety and compliance, use stair nosings from our DDA and commercial ranges. These products are pre-tested for LRV, slip resistance, and durability: