Transition Strips & T-Mouldings: When and How to Use Them

📖 9 min read

Transition strips are those finishing pieces that most people don't think about until they're standing in a doorway wondering how to connect their new hybrid flooring to the tiles in the bathroom. Or realising there's an ugly gap where the flooring meets the sliding door track. Or noticing the height difference between their new floor and the old carpet in the spare room.

They're small details, but they make a huge difference to how finished your floor looks. And more importantly, choosing the wrong type – or skipping them entirely – creates trip hazards and leaves your floor edges exposed to damage.

Here's your complete guide to what's what and when to use each type.

The 5 Types You Need to Know

There are five main transition strip profiles. Each solves a different problem:

Quick Guide: Which Strip for Which Situation

Here's a fast reference for common scenarios:

T-Moulding Explained

T-moulding is the most commonly misunderstood transition strip, so let's dig into it.

When You Actually Need T-Moulding

T-moulding serves two purposes:

1. Transition between rooms with same-height flooring

If you're installing hybrid flooring in the living room and the same hybrid in the hallway, a T-moulding at the doorway allows each section to expand and contract independently.

2. Expansion breaks in large areas

Floating floors need expansion gaps. For most residential installations, the gap around the room perimeter is enough. But for very large open-plan areas (generally over 10-12 metres in any direction), you may need a T-moulding mid-floor as an expansion break.

When You Don't Need T-Moulding

Here's the thing – for typical rooms and doorways, you often don't need T-moulding. If:

• The total continuous floor area is under ~100m²
• No single dimension exceeds 10-12 metres
• You have adequate expansion gaps at all walls

...you can run flooring continuously through doorways with no transition strip. Many people prefer this – it creates seamless flow and makes spaces feel larger.

The Australasian Timber Flooring Association (ATFA) provides guidelines on maximum spans for floating floors, though specific limits vary by product. When in doubt, check your flooring manufacturer's installation guide.

🔴 IMAGE 2 (T-Moulding detail): Close-up of T-moulding installed in a doorway between two rooms with hybrid flooring – shows how it bridges the gap cleanly. Eye-level angle works best. Ideal size: 1000x600px landscape.

How to Install Transition Strips

Most transition strips install the same way. Here's the process:

Method 1: Track System (Recommended)

Most quality transition strips come with a metal or plastic track that screws to the subfloor first. The strip then clips or slides into the track.

The track system is great because you can remove the strip later if needed (for repairs or flooring replacement) without damaging anything.

Method 2: Direct Adhesive

If there's no track, or you're installing over existing flooring where you can't screw into the subfloor:

Direct adhesive is permanent – you can't easily remove the strip later without damage.

Installing Scotia

Scotia is a bit different – it attaches to the skirting board, not the floor:

1. Cut scotia to length (mitre corners at 45°)
2. Apply a thin bead of adhesive or use a nail gun
3. Position against skirting, overlapping the floor edge
4. Press firmly – the scotia should touch the floor but not press down on it

Important: Scotia must never be fixed to the floor itself. It attaches to the wall/skirting only. The floor needs to be able to expand and contract underneath.

The Expansion Gap Question

Transition strips don't replace expansion gaps – they cover them.

When you install a T-moulding or reducer at a doorway, you still need to leave the standard 8-10mm gap between the flooring edge and the strip's track. The strip's profile then conceals this gap.

   ┌─────────────────┐
   │   T-Moulding    │  ← Visible strip
   └────────┬────────┘
            │
   ─────────┴─────────  ← Track (screwed to subfloor)
            
Floor A │  GAP  │ GAP │  Floor B
────────┘       └─────┴─────────
        ↑           ↑
    8-10mm      8-10mm
   expansion   expansion
        

Mistakes to Avoid

These are the errors that lead to callbacks and complaints:

🔴 IMAGE 3 (Installation): Someone installing a transition strip track in a doorway, with drill and screws visible. Or a completed reducer strip between hybrid flooring and tiles. Ideal size: 1000x600px landscape.

Our Transition Strip Range

We stock matching transitions for our hybrid flooring ranges. Having the same finish and colour batch makes a real difference:

For 6.5mm Hybrid Flooring

• Reducer strips – 2400mm lengths
• Scotia – 2400mm lengths
• L-Moulding – 2400mm lengths

For 9.5mm Hybrid Flooring

• T-Moulding – 2400mm lengths
• Scotia – 2400mm lengths
• L-Moulding – 2400mm lengths

Colour-Matched Options

We also stock scotia in specific colours to match our popular hybrid ranges:

Browse the full accessories collection or get in touch if you need help matching transitions to your flooring.

How Many Transition Strips Do You Need?

Before ordering, walk through your space and count:

• Doorways to other flooring types – reducer or T-moulding each
• Doorways continuing same flooring – possibly none, or T-moulding if you want a break
• Sliding door tracks – end cap or L-moulding each
• Step-downs or level changes – end cap each
• Linear metres of skirting board – scotia (measure and add 10% for cuts and waste)

Our flooring calculator can help you work out quantities including accessories.

Questions?

Not sure which transition strip you need, or how many to order? Call us on 0431 311 633 or send us a message with your floor plan and we'll help you work it out.

Last updated: December 2025 · Written by the team at Hybrid Floors Australia

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