Glossary of Door Terminology

A little puzzled by our terminology? Take a look at the sectors below to find out their reference and specification.

Key Terminology &
Reference Table

You might find reference to various names, products, processes or organisations when exploring our internal door set range. So we have collected some together in a short glossary and given a brief explanation of what they mean.

Reference	Meaning
Single Leaf	Single Door
Double Leaf	Double Door
Double unequal leaves	Hospital Door Set
Single Leaf & over panel	Panel above Single Door
Double Leaf & over panel	Panel above Double Door
Double unequal Leaf & over panel	Panel above Hospital Doorset
Single Leaf & glazed vision panel	Single Door featuring Glazed Aperture
Double Leaf & glazed vision panel	Double Doors featuring Glazed Aperture
Double unequal Leaf & glazed vision panel	Hospital Doors featuring Glazed Aperture

Koto Hospital Doors — Double unequal leaves

Single Door with Vision Panel — Single Leaf with Vision Panel

Double unequal leaves with Vision Panels

Architrave

Molded decorative strips that are fitted to the door frames to cover any gaps between the frame edge and the wall.

Aperture

Any type of opening in the door where glass is fitted.

Beading

Beading is used to fix solid panels or glass apertures into doors.

Bespoke

Tailor-made to meet individual requirements to match specific needs.

Core

The specification of material used internally to make up the body of the door.

Each core has varying properties and is tested in various ways depending on where the door will be placed and the requirements it must meet.

Finish

When we refer to our “door finishes” we are referring to the visible surface of the door. We offer a range of different door finishing options including Real Wood Veneers, Laminates and Paint Grade.

FSC®

The Forest Stewardship Council is an independent organisation that promotes the responsible management of forests worldwide and is recognised on a global scale.

FD30 Fire Doors

Doors that have been tested by an accredited under the IFC Certification and BM TRADA ‘Q’ Mark Fire Schemes with 30-minutes resistance to the passage of fire.

FD60 Fire Doors

Doors that have been tested by an accredited under the IFC Certification and BM TRADA ‘Q’ Mark Fire Schemes with 60-minutes resistance to the passage of fire

FD90 Fire Doors

Doors that have been tested by an accredited under the IFC Certification and BM TRADA ‘Q’ Mark Fire Schemes with 90-minutes resistance to the passage of fire.

FD120 Fire Doors

Doors that have been tested by an accredited under the IFC Certification and BM TRADA ‘Q’ Mark Fire Schemes with 120-minutes resistance to the passage of fire.

Hollow Core

The internal center of the door constructed in a hexagonal fiber-board honeycomb structure, providing the doors formation and strength.

Intumescent Seal or Strip

Materials described as ‘intumescent’ have the additional property that, upon reaching a certain temperature they expand dramatically.The intumescent seal/ strip works by sealing around the edges of a door way to prevent exposure to elements.

Lippings

Specifying what the edges of the door are covered or not covered with, normally edges will be covered on each side of the door (the width) as the cores will show upon opening.

Covering these sides is typically called ‘C2LE’ concealed 2 long edges.

All sides being covered would be called CL4E. made of internally.

MDF- Medium Density Fibreboard

Medium-density fibreboard (MDF) is a manufactured wood product constructed from wood fibre and resins which is then pressed out into sheets to vary the products thickness.

Pre-finished / Primed Doors

Primed doors arrive with a base coat of primer, allowing you to paint them your desired colour without having to sand and prime yourself beforehand.

Solid Core

The internal centre of the door constructed from wood byproducts providing the doors formation and strength.

Skirting

Decorative wooden board that runs along the bottom of an interior wall, to finish the join between the wall and the floor.

Sustainable Sources

A sustainable resource is a resource that can be continuously replenished. For every resource used harvested from the land a replacement will be created/planted.

Veneer

A Veneer is a thin decorative covering of fine wood applied to a coarser wood or other material. Veneers can be constructed in either hardwood of softwood in a range of wood species.

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