Z9 Z bar in Antique Brass made from solid brass with a brushed finish. This door threshold joins carpet to hard flooring while providing a classic, durable transition for traditional interior schemes.
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Description
The Premier Z9 door threshold is designed to create a neat and durable transition between carpet and hard flooring, including ceramic tiles, wood, laminate, stone, and rubber. Often referred to as a ‘Z bar’ due to its profile shape, it provides a firm grip on the carpet while allowing the hard flooring to sit neatly alongside it.
Suitable for carpets approximately 9–12mm thick, the carpet is secured onto integrated pins, with thicker carpets requiring compression for a snug fit.
For the best installation, both floor surfaces should be level. If the hard flooring sits slightly higher than the carpet, 3mm MDF strips can be placed beneath the threshold to raise it, ensuring the visible bar sits neatly over the edge of the hard floor while the pins align correctly with the carpet.
Once installed, the carpet can be ‘napped down’ using a carpeted wood block, improving grip and reducing the height slightly.
Manufactured from solid brass with rounded edges and finished in antique brass, this door threshold combines durability with a more traditional, characterful appearance.
Key Features
Designed for joining carpet to hard flooring
Suitable for carpets approx. 9–12mm thick
Z bar profile for a secure and professional transition
Compatible with tiles, wood, laminate, stone, and rubber flooring
Carpet is held firmly using integrated pins
Can be ‘napped down’ for improved grip and reduced height
Includes option to adjust height using 3mm MDF strips
Made from solid brass for strength and durability
Rounded edges for a smooth finish
Available in a range of unlacquered metal finishes
Sizing Specifications
Threshold width: 30mm (visible top bar)
Approximate thickness: 4mm
Suitable for carpets approx. 9–12mm thick
Available lengths: 900mm, 1000mm, 1800mm and 2700mm
Can be cut to size
Important: Your floors should be level in order for the door threshold to sit correctly. MDF strips can be used to adjust the height if necessary. Carpets may need to be compressed onto the pins depending on the thickness.
Flooring Compatibility
Compatible with:
Carpet to hard floor joins
Ceramic tiles
Wood flooring
Laminate flooring
Stone flooring
Rubber flooring
Not suitable for:
Uneven floor levels without adjustment
How to Choose the Right Size Door Threshold
Measure the width of the doorway or area where the carpet meets the hard floor. Select a slightly longer length so the threshold can be trimmed to fit precisely.
The Z9 profile is designed for carpets within the 9–12mm range. Ensure both floor surfaces are level before installation. If the hard flooring is slightly higher, use MDF strips to raise the threshold accordingly.
If the carpet sits lower than the hard floor, Easyshims can be used to create a gradual ramp underneath.
How to Install a Door Threshold Step-by-Step
Installing a Premier Z9 door threshold can be completed using basic tools:
Measure and cut the threshold to the required length using a hacksaw.
Prepare the bar by removing one side of the base along the scored groove using pliers (turn anti-clockwise).
Position the threshold over the join between carpet and hard flooring.
Adjust height using MDF strips if required.
Fix the threshold using adhesive, nails, or screws (avoiding underfloor heating).
Press the carpet onto the pins so it is held securely.
Use a carpeted wood block to ‘nap down’ the carpet for a firmer grip.
Check that the threshold is level and securely fixed.
For more detailed guidance, see our guides on installing door threshold strips and cutting door bars to size.
The visible bar or top is 30mm (just over 1") wide and approximately 4mm thick.
To prepare the Premier Z, score down the shown groove.Peel off the excess base strip with a pair of pliers.
How to Remove an Existing Door Threshold
First, determine how the existing threshold has been fixed.
If screws are present, remove them using the correct screwdriver. If nailed, gently lift the threshold using a claw hammer or pry bar.
Release the carpet edge from the pins before removing the trim, taking care not to damage the surrounding flooring.
Remove any remaining fixings before installing the new threshold.
Cleaning & Maintenance
Dust regularly to prevent micro-scratches
Clean with warm, soapy water and a soft cloth
Dry thoroughly after cleaning to prevent water marks
Avoid abrasive or harsh cleaning products
Use a suitable metal polish occasionally if you wish to maintain the original finish
As this door threshold is unlacquered, it will naturally develop a patina over time, enhancing the depth and character of the antique bronze finish.
Many of our door thresholds are available with next-day delivery. You’ll see this clearly marked at the top of the page and again at checkout.
We deliver throughout Great Britain for most items (including Northern Ireland).
We use DHL, DX and UK Mail for deliveries and ship direct from our manufacturers to your door to keep delivery times to a minimum.
The products we sell are high quality, and many are made-to-order and hand-finished. This means that delivery times vary for each product and will be displayed at the top of this page, with more information available on our delivery page.
Frequently Asked Questions
What is a Z9 door threshold used for?
It is used to join carpet to hard flooring, creating a neat and secure transition.
What carpet thickness is suitable for this trim?
It is designed for carpets approximately 9–12mm thick.
Can it be used with laminate or tile flooring?
Yes, it is suitable for a range of hard surfaces including laminate, tiles, wood, and stone.
How is the carpet secured?
The carpet is held in place using integrated pins and can be tightened further by ‘napping down’.
What if my hard floor is slightly higher than the carpet?
You can use MDF strips to raise the threshold so it sits correctly over the edge.
Can I install this door threshold myself?
Yes, it can be fitted using standard tools and common fixing methods.
How do I cut the threshold to size?
Use a fine-toothed hacksaw for a clean and accurate cut.
Will the finish change over time?
As the product is unlacquered, it may naturally develop a patina depending on its environment.
The visible bar or top is 30mm (just over 1") wide and approximately 4mm thick.
