Door Thresholds Buyers Guide

Door thresholds are typically made of metal and create a neat and secure join between two floorcoverings, inside the home. They are widely used across doorways and rooms, butting up to full-drop windows and around fireplaces. Differing designs of internal door thresholds cater for specific types of flooring, from carpets to vinyl, tiles to engineered wood, parquet to multiply flooring, and they address specific issues, such as differing floor height transitions and joining floating floors.

Both are suitable for joining two carpets and are the most popular. The double naplock has a base strip either side with serrated pins, these fit under the carpets and grip them under tension; this leaves the solid door bar visible, neatly covering the exposed carpet edges & preventing them from fraying. Alternatively, a threshold plate fits over the top of the carpet join, covering up the two exposed edges; the carpet should therefore be held in place with gripper, similar to the rest of the room.

SHOP CARPET TO CARPET DOOR THRESHOLDS

The standard double naplocks can be screwed/nailed into the floor or fixed with a propriety adhesive; the latter is particularly useful with underfloor heating. Carpet bar plates, such as the Premier Cover and Premier Posh, screw into the floor.

SHOP CARPET TO CARPET DOOR THRESHOLDS

A quality, brass carpet bar is around 3 mm thick; this needs to be added to the thickness of your underlay and carpet when calculating if your doors will open and close.

The term differentiates the type of flooring from carpet, the latter being typically soft, springy and constructed from fibre yarn. In contrast, hard flooring includes bare floorboards and concrete, porcelain tiles, engineered wood, laminates, parquet, vinyl and LVT, stone and the like.
Carpet to tile door trims join a carpet to a hard floorcovering. On the carpet side there is a base plate with serrated pins which fits under the carpet and holds it firm, whilst on the hard flooring side, the threshold neatly fits over the edge, covering it up. This type of design is also known as a Z bar, named after its side profile. For more information

SHOP CARPET TO TILE TRIM

When joining a carpet to a porcelain tiled floor, you can opt for a door bar that butts up against the tile (Square) and therefore shows the cut edge or lips over the top (Z bar) and therefore covers over any rough edges.

SHOP Z BAR
SHOP SQUARE THRESHOLD

Most door thresholds need to be fitted flat to work. However, where a tiled floor (or other type of hard covering) is higher than the compressed carpet and you install a door threshold, the carpet will be unsupported as you pull it up to the level of the higher threshold and tiles. Consequently, the carpet will quickly pull away from the door threshold strip and ultimately fray. Instead, sloped shims fitted under the carpet will support and lift it up to the level of the tiles and you can then use a standard carpet to tile Z bar to bridge the gap and create a smart join.
Alternatively, the Posh and Premier Cover Plates are both designed to cater for up to 8mm height difference and can be installed at an angle.

SHOP SHIMS
SHOP POSH COVER PLATES
SHOP PREMIER COVER PLATE

The curved design of the single naplock carpet threshold creates a smooth transition where a carpet stops and bare floorboards, concrete or a thin floorcovering such as vinyl starts. The curved profile is designed to avoid a trip hazard, whilst the serrated pins under the carpet hold it under tension, avoiding any rucks. The Premier Single door trim is the best product – choose by thickness of carpet 4mm, 9mm or 13mm.

SHOP SINGLE NAPLOCK

Vinyl flooring comes in many designs and formats, including brands such as Karndean and Amtico. Typically, it is relatively thin, up to 5mm thick. When joining vinyl to other types of flooring or bridging the gap to another vinyl floor, in doorways and across rooms, you have the option of choosing a solid metal trim, such as those from the Premier range, or a trim which is designed to be inset with a piece of your vinyl and therefore matches and is discrete – the Ali range.

SHOP ALI RANGE for VINYL
SHOP VINYL TRANSITION STRIPS

LVT is typically much thinner at 2.5-5mm than hard flooring such as laminates, wood, ceramic tiles etc. The design of special thresholds for thin flooring such as vinyl accounts for this, resulting in slender thresholds. However, the attraction of matching all your door thresholds throughout a house, regardless of floorcovering, means that versatile cover plates, are a popular alternative.

SHOP VERSATILE COVER PLATES

The term differentiates the type of flooring from carpet, the latter being typically soft, springy and constructed from fibre yarn. In contrast, hard flooring includes bare floorboards and concrete, porcelain tiles, engineered wood, laminates, parquet, vinyl and LVT, stone and the like.

There is an excellent choice of different types and widths of threshold strips, which are fixed in place with a self-adhesive strip, attached to the underside. The adhesive is a propriety adhesive and sticks fast.

SHOP SELF-ADHESIVE THRESHOLD STRIPS FOR HARD FLOORING

T Bars vary in width from 12-25mm wide and provide a neat floor divider for covering the gap between two hard floorcoverings, providing neither floor is floating (expands). Fixed in place with silicone, they provide an economic solution.

SHOP T BARS

There is a choice of extra wide door thresholds for joining level floors, from 55mm – 100mm.

SHOP EXTRA WIDE DOOR THRESHOLDS (filter by WIDTH)

The Premier Ramps (10-20mm height difference) and Premier 2 Way Ramps (2-9mm height difference) are ideal – they create a safe and smart slope from one floor to the other.

SHOP RAMPS