What is a 49mm Wide Aluminium Door Threshold Strip?

A 49mm wide door threshold strip is a broader flat aluminium profile designed to bridge the transition between two floor surfaces at a doorway, providing a wider coverage area than standard 35mm thresholds. The extra width (49mm vs the common 35mm) makes it ideal where a larger gap exists between floor surfaces, where slightly different floor heights need to be accommodated, or where a more substantial, prominent finish is desired. Made from anodised aluminium, it is screw-fixed to the subfloor and available in five finishes to match any interior.

Technical Specifications

49mm vs 35mm — Which Width Do I Need?

Choosing Your Length

Colour Matching Guide

Key Features and Benefits

• 49mm wide profile — the extra width compared to standard 35mm thresholds provides better coverage of wider expansion gaps, slightly misaligned floor edges, and situations where a minor height difference exists between the two surfaces.
• Slight height difference tolerance — unlike purely flat thresholds, this profile accommodates minor height differences between adjacent floors, making it more versatile for real-world installation conditions.
• Anodised aluminium — scratch-resistant, corrosion-proof, maintenance-free. Will not rust, chip, or peel.
• Pre-drilled screw holes — no marking out required. Screws and plugs included for immediate installation.
• 5 finishes — match to door hardware, skirting boards, and flooring trims.
• Cuttable — metal saw or angle grinder. File edges smooth.

Where to Use a 49mm Door Threshold Strip

• Hallway laminate to living room carpet (where a slight level difference exists)
• Kitchen vinyl/LVT to dining room hardwood with minor height variation
• Bathroom tile to bedroom laminate across an expansion joint
• Office reception to meeting rooms with varied floor thicknesses
• Anywhere two floors meet with a slightly wider or uneven gap
• Commercial doorways requiring a more substantial threshold presence

⚠️ Note: While this profile accommodates slight height differences, it is not a full ramp or reducer profile. For significant height differences (more than approximately 3-4mm), a dedicated ramp threshold is required.

How to Install a 49mm Door Threshold Strip

1. Measure the doorway width and mark the threshold strip to length.
2. Cut to size using a fine-tooth metal saw or angle grinder. File sharp edges smooth.
3. Position centrally over the floor joint or expansion gap, aligned with the door stop.
4. Mark fixing positions through the pre-drilled holes onto the subfloor.
5. Drill pilot holes and insert the supplied wall plugs.
6. Screw down firmly with the supplied screws — secure but not overtightened.
7. Check finish — run your hand across to confirm a smooth, stable installation.

Frequently Asked Questions

What is the difference between a 49mm and a 35mm threshold strip?

The main difference is width and tolerance. The 49mm strip is wider (providing more coverage) and can accommodate slight height differences between adjacent floors. The 35mm is slimmer and suited to same-level flush transitions where a discreet, minimal appearance is preferred.

How much height difference can this threshold accommodate?

This profile accommodates slight height differences between floor surfaces. It is not a ramp or reducer profile. For significant height differences exceeding approximately 3-4mm, a dedicated ramp threshold is required.

Can this be cut to a shorter length?

Yes. Both the 0.93m and 2.7m lengths cut with a metal saw or angle grinder. File edges smooth before installation.

What is the best finish for chrome door handles?

Silver or Inox. Silver is brighter and more polished; Inox has a brushed stainless steel appearance for a slightly more understated match with brushed nickel hardware.

Can this be used in a bathroom or wet area?

Anodised aluminium is corrosion-resistant and suitable for bathroom doorways and wet-area thresholds. The anodised finish will not rust or degrade in humid environments.

Is 0.93m enough for a standard door?

Yes. Standard UK internal doorways are typically 762–838mm wide. The 0.93m length provides enough material to cut to the exact doorway width with a tidy finish.

How many strips do I need?

One strip per doorway with a floor transition or expansion gap. Use the 0.93m for standard doors and the 2.7m for wide or commercial openings.

What is anodised aluminium?

Anodising is an electrochemical process that hardens and colours the aluminium oxide surface layer. The result is scratch-resistant, corrosion-proof, permanently coloured, and maintenance-free.

Why Buy From Stair Nosings UK?

• ✅ UK stock — fast dispatch, no overseas delays
• ✅ Flooring trims specialists — the widest range of threshold strips and floor profiles in the UK
• ✅ Complete kit — screws and plugs included in every pack
• ✅ 5 finishes, 2 lengths — the right combination for every project
• ✅ Trade and DIY — used by flooring contractors and homeowners across the UK
• ✅ Secure checkout — major payment methods accepted

Available in Silver, Gold, Champagne, Inox, and Black. Lengths: 0.93m and 2.7m. Screws and plugs included. Select your options above.