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I need to reduce my door to suit the opening I have, how much can I take off the door?
On external doors we recommend that no more than 9mm be removed from any given edge. Sometimes door openings are a non standard size e.g. 31 1/2″ x 78″. We would advise that you purchase an 80” x 32” door and reduce the height rather than the width, as there is more width to the bottom rail than the door stiles.

However removing more than 1” from either the height or width will invalidate the guarantee. On internal doors, we recommend no more than 9mm (3/8 inch) be removed from the sides and top and bottom of the door. As with the external door, if a greater amount requires removal from the height of a door it should be taken from the bottom rail.


I have broken a piece of glass, can you supply a replacement piece?
These doors are of cassette construction therefore they are built around the glass and there are no loose beads. We do not have replacement glass. If the customer wants to re-glaze, they would need to router the mould off one side of the glazing aperture, remove the broken glass, put new glass in and acquire a new loose beading to re-glaze the door ( probably as cheap to buy a new door).


The label on the door states that I cannot use wax, teak oil or varnish…….why not?
When we manufacture a door it has a controlled moisture content, the above mentioned treatments will not seal the moisture content into the door, therefore allowing moisture ingress or loss to occur causing the door to either swell or shrink. Only a fully paint finish (primer, undercoat, gloss) or high performance wood stain should be used.


What is the U-Value of a specific external door?
Certified U-Values are available for the majority of Door Warehouse Doorsets. These U-Values have been determined by Chiltern Dynamics, an independent UKAS accredited testing laboratory. External doors sold separately are available with indicative U-Values only. These indicative U-Values are based upon information from BRE 443 2006 Edition: Conventions for U-Value Calculations, produced by the Building Research Establishment Limited.


Can you tell what the fire rating is for my door?
Other than the specific fire doors sold by Door Warehouse none of our internal or external doors have a fire rating.

The fire doors sold by Door Warehouse all have a 1/2 or 1 hour fire rating.


What wood (species) is the door made up of?
Hardwood — Meranti/Durian/Menkulang/Melunak

Clear & Knotty Pine — Radiata/Elliotti/Patula

Oak — American White Oak:

White Moulded—egg box construction, pressed hardboard skin, softwood stiles and rails and lock block on both sides of the door.


Are the doors made up of solid or engineered construction?
In the interest of continual improvement, efficiency and environmental awareness, we reserve the right to include engineered components in all our doors.


What is the difference between a door with Dowelled construction to that of a door with M&T construction?
Our Dowelled Hardwood doors are manufactured from kiln dried timber and are jointed using fluted dowels and modern adhesives.

Our Mortice & Tenon doors are manufactured from select kiln dried hardwoods, and are constructed using traditional Mortice & Tenon joints and modern adhesives. This ensures that the doors are constructed to the very highest standard. The panels are set in a waterproof mastic ensuring that the highest level of weatherproofing is achieved.



Ensure to fully seal your newly purchased doors on all faces and edges to avoid any moisture getting into the door or allowing any natural moisture present within the door to escape. Failure to do this will invalidate any guarantee given by Door Warehouse and any of its suppliers.

Avoid fixing locks/latches in mid-rails as over time this will weaken the door and cause problems further on down the line. In doing this, you will also be voiding any warranties given.

Do not install any type of timber doors into building with recent plastered or screeded areas. Wet sites with enclosed unheated buildings represent extremely detrimental environments and must be thoroughly dry, without condensation, before doors are introduced.

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