Technical information
Our beautiful doors and accessories are designed and engineered with all relevant standards and technical specifications in mind.
Whether you’re embarking on a fresh home renovation project or simply looking to replace an old door, you’ve come to the right place. Providing you with all the technical details and insights you need to make an informed decision about your door selection.
In this section, you’ll find comprehensive breakdowns of our various door products, from the materials used and design features to installation tips and maintenance advice.
Explore the sections below, or contact us if you can’t find the answer you’re looking for.
Glossary Terms
accessories
Additional items or features that can be added to a door to enhance its functionality or aesthetic appeal.
american white oak
A hardwood species native to North America, commonly used in the production of high quality doors due to its durability and attractive grain patterns.
american blackwalnut
A hardwood species native to North America, selected for its rich, dark colour and unique grain patterns, often used in high end door production.
aperture
The opening in a door where light can pass through and is usually filled with glass.
architrave
A decorative moulding or trim that frames the perimeter of a door and often bridges the gap between the frame and wall
beading
Refers to a narrow strip of moulding or trim that is often used to add decoration to a door or to secure glass panes in place within a door.
bespoke
Doors which are made to measure to the specific size required for your project, which are outside of the trimmable tolerances on our stock door sizes.
bi-fold
A type of door which has two or more panels and opens by folding back into sections flat against each other. Folding together often saves space in a room. Bi-folding doors come as both internal and external options.
blade
A term used to refer to the main body or panel of a door, typically without specifying particular features or materials.
blanks
A flush door with no pattern/design.
bottom rail
The horizontal section of a door frame or panel located at the bottommost part of the door. The bottom rail provides structural support and stability to the door.
canopy
A protective covering or roof like structure installed above an exterior door to shield it from adverse weather conditions, such as rain, snow, or sunlight.
chamfered
A type of profile used for skirting and architrave, where a bevelled or angled cut is made.
cill
The horizontal, lowermost part of a door frame or threshold that extends across the bottom of an exterior door. It acts as a barrier to prevent water, drafts, and debris from entering the building.
composite
A type of door made from a combination of materials.
core
The central or innermost structural component of a door that provides its strength and stability. Door cores can be made from various materials, including solid wood, particleboard, or composite materials.
damper
An accessory A device or mechanism installed on a door to slow down its closing speed, preventing it from slamming shut.
demi panel
Usually glazed, this is a smaller door leaf which generally remains in a fixed position, sat next to a main access door to allow more light to pass between rooms.
door frame
The structural framework that surrounds and supports a door, providing stability and a means of attachment for the door itself. This is often referred to as a door lining, particularly in internal applications.
door pairs
A term used to describe two doors that are installed side by side, to create a double door entrance. Door pairs are often used for larger openings, such as grand entrances.
dowel construction
A method of joining or assembling wooden components, such as door stiles and rails, by inserting cylindrical wooden dowels into corresponding holes in the pieces being joined.
embossed
A decorative technique used on doors where a design, pattern, or texture is raised or pressed onto the surface of the door material. It is often used for decorative purposes or to mimic the look of wood grain or other textures.
escutcheon
A decorative plate or cover, typically made of metal, designed to surround and protect a keyhole, handle, or lock cylinder on a door.
etched
A design or pattern which is created and cut onto glazed panels. An aesthetic appeal which can help to create privacy in style.
engineered core
An engineered core refers to the internal structure of a door that is composed of a mixture of wood-based materials such as MDF and plywood to create a compact core that is durable and resistant to warping.
fd30
Doors that are resistant to fire for a minimum of 30 minutes providing they are fitted in line with the specific fire door test report.
fd60
Doors that are resistant to fire for a minimum of 60 minutes providing they are fitted in line with the approved accessories.
finish
Refers to the surface of the door as you’d receive it, which describes whether the door has been treated or painted prior to your receiving your door. The most common terms include unfinished, prefinished and primed.
fixings
Refers to various types of fasteners, hardware, or components used to secure or attach doors, door frames, and related elements to a building’s structure.
flush
A simple door designs which has a plain, smooth face on both sides without any design or features.
flusso
LPD Door’s range of Pocket Door systems and accessories.
folding systems
Multiple door panels hinged together, allowing them to fold and stack against each other when opened in conjunction with a sliding door mechanism.
fsc
The Forest Stewardship Council. An international non-profit organisation that promotes environmentally friendly and responsible management of the world’s forests. FSC is recognised globally.
glazing
Refers to the varying types of glass panels which are installed within a door. They serve various purposes, such as enhancing aesthetics, providing natural light and improving energy efficiency.
grain
When the original rough looking timber style can be seen on the door faces giving it an authentic look.
grooves
Channels cut into the surface of a door, most commonly in a square or V shape. Grooves are often used for decorative purposes, adding texture and design elements to the door’s appearance.
grp
An abbreviation of Glass Reinforced Plastic. The outer skin of a composite door which is moulded to give the door a natural, woodgrain appearance.
guarantee
A formal assurance or warranty provided by the manufacturer or seller of a product, specifying the terms and conditions under which they will repair or replace the product if it fails to meet certain quality standards or experiences defects within a specified timeframe.
handing
Refers to the direction in which a door swings or the orientation of a door’s hinge placement.
hang
In door related terminology, ‘hang’ refers to the process of fitting a door to its hinges or other mounting hardware, allowing it to open, close and swing within a door frame.
hardware
Refers to the various components, fixtures, and accessories that are used to enhance the functionality, security, and aesthetics of a door.
hardwood
A type of wood derived from broad leafed trees, typically characterised by its dense and durable nature. Hardwood is commonly used in door construction due to its strength, resilience and appealing grain patterns.
hinges
Mechanical components that serve as pivot points and allow a door to swing open and closed within a door frame.
inlay
A decorative strip which is set into the face of the door, generally using varying materials to create a key feature.
intumescent
A type of material or product that expands when exposed to heat or flames, forming a protective barrier to seal gaps and prevent the spread of fire and smoke. They are generally applied in door frames and they’re used to protect key hardware components.
ironmongery
A collective term for various hardware and fittings used in door construction and related applications.
jamb kit
Also known as the lining or finishing kit, the Jamb Kit is used on internal Pocket Doors. Often constructed from timber, it’s attached to the pocket door framework and covers the edges of the steel so you can’t see above the door or into the pocket.
kick plate
Often used in more commercial settings, they are usually metal or plastic strips which are installed at the bottom of doors. They protect from wear and tear and allow the door to be pushed open using a foot, without marking or damaging the face of the door.
knob
A round door handle which you have to turn to open the door. Often preferred in traditional properties and require more grasp and strength to turn.
knots
Knots are imperfections from branches that cause living wood grain to grow around them. Knots are natural imperfections that make the wood grain so eye-catching and distinctive.
kite mark
Seen in the bottom corner of glazed doors, it identifies critical information about the glass used such as the manufacturer, product standard and it’s impact performance. It indicates that the glass maker adheres to kite mark accredited quality control measures. It is not safety mark.
laminate
A man made product used to cover the face of a door in the same way as a wood veneer. Laminate finishes will often mimic wood grains.
latch pack
A hardware pack including a pair of handles, three hinges and a tubular latch.
latch plate
Also known as a strike plate, a metal plate that is fixed to the door frame and is designed to receive and secure the latch, to hold the door in the closed position.
leaf
A single door can also be known as a leaf or blade
light
Used to describe a glass panel within a door.
lippings
A strip of solid wood, generally colour matched with the face of the door, to conceal the inner core but also to allow for the door to be trimmed during installation.
linings
A structural framework or casing that is installed into a timber stud wall or brickwork opening to fix your door to.
lock block
Generally used in hollow core or semi solid core doors, a lock block is a solid area of the door where the latch/lock would be positioned to ensure a good, secure finish can be achieved.
mouldings
A decorative bead, usually made from wood to enhance the doors design. Mouldings vary in shape and size between different door designs.
m&t construction
A method of joining or constructing doors using a traditional technique called ‘Mortise and Tenon’.
A tenon peg from one component of the door is fixed and glued into a mortise hole into another component to create a strong and secure joint.
mullion
A mullion is a fixed or removable part of a door frame which separates doors, sidelights or glazed panels. LPD Doors use Mullions in our Manhattan Sidelight interior door designs.
night latch
Mostly used on exterior doors, it’s a lock that is fitted on the surface of the door. It is operated from the exterior using a key and from the interior side of the door using a knob. It holds the door closed and has a latch which can often be deadlocked into position.
opening
The physical gap or passage within a building’s structure where a door is installed to allow access between two spaces.
oak
A durable and strong hardwood, oak is renowned for its attractive grain patterns and long lasting qualities. When used to veneer doors, Oak adds a layer of natural beauty and gives doors a premium appearance.
pair maker
A timber strip also known as a T-lip, that is fixed to the long edge of a door to create a rebate on a pair of doors.
panel
A component of a door which makes up it’s visible surface. Panels come in varying sizes and profiles such as, flat panels, raised & fielded panels, shaker style panels and cricket bat panels.
pefc
The Programme for the Endorsement of Forest Certification
pocket door
A sliding system that can be built into a wall to allow doors to slide into the wall.
pre-finished
A door that is already finished with varnish so no top coats are required.
primed
A door that has received one coat of treatment, a top coat is required.
primed plus
A high quality first coat of treatment has been applied, a top coat is required.
privacy lock
A thumb turn used for locking doors, usually combined with a door handle latch pack.
quality
The standard of something compared to other versions.
quantity
The amount of products required.
rail
Rails are the horizontal, short pieces of a door.
rebate
Where two doors overlap half of the thickness of each door is cut away so that they interlock. Working similar to a door stop.
reeded
A type of glass that is made up of parallel lines that create a semi obscure finish.
room divider
A pair door situated by itself or with fixed demi panels used for bigger openings.
roomfold
A folding system that allows hinged doors to fold back similar to a bi-fold. They allow bigger openings and light to be passed through.
rose
A circular back plate on a handle that hides the screws and applies a neat finish.
safety glass
Glass that has been toughened to ensure it is difficult to break.
semi-solid core
A blend of hollow and solid construction types, combining solid timber and lighter materials.
shaker
Flat centre panels with square edges, they have minimal detailing.
sidelight
A narrow window that is fastened to a door.
skirting
A decorative piece of wood used to cover the bottom of the wall and start of the floor to provide a neat finish.
solid core
Normally referring to the construction, the centre of a door is a solid, heavy material.
stile
The long edges of a door.
stops
Slim pieces of timber that create a frame that your door sits into. They are also useful for stopping drafts.
strike plate
A small piece of metal attached to the door lining that the latch sits into.
threshold
A strip of wood or metal placed at the bottom of a door on the floor, to distinguish the difference between rooms and to stop the flooring moving.
t-lip
A ‘T’ shaped piece of timber used to create a rebate for a pair door.
toughened glass
Glass that has been strengthened using chemical or thermal treatments. This ensures it does not break easily.
treatment
The finishing you give to a product to ensure it’s longevity. Usually a varnish or paint.
trimming
A particular amount of wood that can be planed down to allow a door to fit an opening.
unfinished
Unfinished products need a stain or paint applying to seal the wood and prevent damage.
u-groove
A U-Groove is a decorative groove cut into the surface of a door, in the shape of the letter “U.”
veneer
A 0.6mm decorative covering of real, fine wood covering a sturdier wood or alternative material.
v-groove
A V-Groove is a decorative groove or channel cut into the surface of a door, shaped like the letter “V.” This groove creates a sharp, angular line that adds depth and texture to the door’s design.
weather bar
A timber strip that can be fixed to the sill of an external door which can be treated to be water resistant.
white oak
White Oak is a durable and versatile variant of Oak known for its durability and attractive grain pattern.
z brace
Seen on external wood gates, it’s the position which the brace should be placed on the back of the gate. The angled part of the ‘Z’ prevents downward movement in the panels and the horizontal portions of the brace keep the panels together.
BLOGS & NEWS
In the world of internal and external doors, we’re at the forefront of trend and style. Keep up to date with the latest industry updates, technical tips, ideas and inspiration from our design team, and all the activity here at Homestyle By Kelvin Timber & LPD Doors.
