Cart Search Carpet Runners
Free delivery over £75 to most UK addresses

Fitting Door Thresholds and Floor Trims

Follow the manufacturers’ fitting instructions

Brief installation instructions for fitting door thresholds sold on our website can be found on the individual product pages. For some products there are also product videos featured.

Expert installers

If you are unsure how to fit a product, it is recommended that you use the services of an expert flooring fitter.

Use the correct tools

Always use a sharp hack-saw to cut door thresholds and floor trims to size.


Once cut or fitted, it is not possible to return your product. Please see our full terms and conditions.

Underfloor heating

Check for underfloor heating before screwing into a floor.

Protective tape

Remove any surface, protective tape only once the installation is completed and then wipe with a dry cloth to remove any finger marks.

Cover plates

These fit over the top of the join between two floor-coverings and protect the edges of both. Therefore, there is no spiked, base section to hold the carpet firm and therefore any carpet will require fixing with an alternative method e.g. gripper. Choose a suitable width of plate to sufficiently cover this area.

A cover plate featuring screws to join any type of floorcovering

Under-carpet base section

These are an integral part of thresholds designed to join carpet. They fit under the carpet and are therefore hidden from view. Teeth punched into the base section grip and hold the carpet, helping to keep it under tension. The base section of the threshold needs to be securely attached to the floor using a traditional screw in method or a special flooring fixative.

Fitting door thresholds using Premier Double Z9 featuring spiked base strips

Fitting door thresholds with self-adhesive tape

Prior to removing the backing tape, ensure all surfaces are clean, free of dirt, dust, paint and grease. Measure up and cut the threshold or trim to measure, before removing the backing tape.

Floating and non-Floating floors

If one or more of your floorcoverings to be joined is floating, it expands and contracts with atmospheric conditions. This is typical of some timber, laminate and vinyl floorcoverings. If this is the case, you will need to use a floor trim designed for floating floors. This means it allows the flooring to move independently of the threshold, on one side; the other side is strongly fixed. You can normally find expansion joints for such floors around the edge of a room, sometimes hidden behind the skirting boards. If your floors are non-floating, the floorcovering is fixed and not affected by atmospheric conditions in your home.

Rated 5-stars by customers