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Internal Doors

Internal doors have hundreds of designs, styles and sizes. From traditional shaker style; to modern contemporary designs like Ely Oak. Glazed or non glazed doors; to bevelled and non bevelled. High quality timber brands like Deanta, JB Kind, and LPD Doors.

If you're interested in creating your own internal door, you can view our door visualiser.

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    JB Kind Quattro Internal White Primed Door 1981 x 610 x 35mm (24")

    JB Kind Quattro white primed internal door 1981 x 610 x 35mm supplied ready for painting to suit any interior.
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    JB Kind Quattro Internal White Primed Door 1981 x 686 x 35mm (78 x 27)

    JB Kind Quattro white primed door 1981 x 686 x 35mm with a smooth paint ready finish and contemporary styling.
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    JB Kind Quattro Internal White Primed Door 1981 x 711 x 35mm (28")

    JB Kind Quattro white primed internal door 1981 x 711 x 35mm ready for painting and easy installation.
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    JB Kind Quattro Internal White Primed Door 1981 x 762 x 35mm (30")

    JB Kind Quattro white primed door 1981 x 762 x 35mm offering a clean modern appearance and decorating flexibility.
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    JB Kind Quattro Internal White Primed Door 1981 x 838 x 35mm (78 x 33)

    JB Kind Quattro white primed internal door 1981 x 838 x 35mm ideal for contemporary residential interiors.
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    JB Kind Quattro Internal White Primed Fire Door 1981 x 686 x 44mm (78 x 27)

    JB Kind Quattro white primed FD30 fire door 1981 x 686 x 44mm providing certified fire protection with a paint ready finish.
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    JB Kind Quattro Internal White Primed Fire Door 1981 x 762 x 44mm (30")

    JB Kind Quattro white primed internal fire door 1981 x 762 x 44mm delivering reliable FD30 fire resistance.
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    JB Kind Quattro Internal White Primed Fire Door 1981 x 838 x 44mm (78 x 33)

    JB Kind Quattro white primed FD30 fire door 1981 x 838 x 44mm combining safety with contemporary styling.
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 686 x 35mm (27")

    JB Kind Quattro white primed glazed door 1981 x 686 x 35mm bringing light into interiors with a paint ready finish.
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 762 x 35mm (30")

    JB Kind Quattro white primed glazed internal door 1981 x 762 x 35mm offering stylish glazing and decorating flexibility.
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 838 x 35mm (33")

    JB Kind Quattro white primed glazed door 1981 x 838 x 35mm ideal for bright contemporary living spaces.
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    JB Kind Rushmore Internal White Primed Glazed Door 1981 x 762 x 35mm (30")

    JB Kind Rushmore white primed glazed internal door 1981 x 762 x 35mm bringing natural light with a smooth paint ready finish.
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    JB Kind Rustic DX Internal Fully Finished Oak Glazed Door 1981 x 762 x 35mm (30")

    Rustic oak, naturally knotty in appearance 1930's DX style glazed interior door. Supplied with varnish finish.. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for bespoke door options:...
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    JB Kind Rustic Oak DX Fully Finished Door 1981 x 610 x 35mm

    JB Kind Rustic Oak DX fully finished internal door 1981 x 610 x 35mm with a premium factory finish.
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    JB Kind Rustic Oak DX Fully Finished Door 1981 x 686 x 35mm

    JB Kind Rustic Oak DX fully finished door 1981 x 686 x 35mm combining traditional design with natural oak.
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    JB Kind Rustic Oak DX Fully Finished Door 1981 x 762 x 35mm (78 x 30)

    JB Kind Rustic Oak DX fully finished internal door 1981 x 762 x 35mm ready for installation.
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    JB Kind Rustic Oak DX Fully Finished Door 1981 x 838 x 35mm

    JB Kind Rustic Oak DX fully finished oak door 1981 x 838 x 35mm offering timeless appeal.
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    JB Kind Sapele Internal Veneered Flush Fire Door 1981 x 610 x 44mm (24")

    JB Kind sapele veneered flush FD30 fire door 1981 x 610 x 44mm providing reliable fire protection and a smooth finish.
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    JB Kind Sapele Internal Veneered Flush Fire Door 1981 x 686 x 44mm (27")

    JB Kind sapele veneered flush fire door 1981 x 686 x 44mm designed for commercial and residential fire door applications.
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    JB Kind Sapele Internal Veneered Flush Fire Door 1981 x 762 x 44mm (78 x 30)

    JB Kind sapele flush FD30 fire door 1981 x 762 x 44mm offering certified fire resistance and quality veneered construction.
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    JB Kind Sapele Internal Veneered Flush Fire Door 1981 x 838 x 44mm (33")

    JB Kind sapele veneered flush FD30 fire door 1981 x 838 x 44mm combining durability, safety and clean styling.
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    JB Kind Sapele Internal Veneered Flush Fire Door 1981 x 915 x 44mm (36")

    JB Kind sapele veneered flush fire door 1981 x 915 x 44mm providing up to 30 minutes fire protection.
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    JB Kind Sapele Internal Veneered Flush Fire Door 2040 x 726 x 44mm

    JB Kind sapele veneered flush FD30 fire door 2040 x 726 x 44mm providing reliable fire protection with a smooth veneered finish.
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    JB Kind Sapele Internal Veneered Flush Fire Door 2040 x 826 x 44mm

    JB Kind sapele veneered internal flush fire door 2040 x 826 x 44mm offering certified fire resistance and lasting durability.

Internal Doors

Wooden internal doors are traditionally used to create an occasional barrier between rooms whilst creating privacy. However, they have also taken up the role of helping to create a specific appearance to a home, whether that’s a traditional or contemporary one.

At Howarth, we currently offer a vast range of interior doors in 80+ types of doors, which are available in 10+ styles. The types of doors include:

Glazed doors, which are available as clear, obscure, and decorative to suit the needs of different areas of your home. These are a simple method of adding light to dark areas, such as hallways.

Fire doors are aimed to help protect your home in the event of a fire. All our fire doors meet the necessary building regulations. All fire doors can be chosen to match or compliment standard doors, and many of our popular door ranges are available in a fire door option.

Pre-Finished doors are ready to be hung straight away and do not need paint or stain to be applied. Pre-finished is also a good choice if you are short on time.

Unfinished doors may require sanding down to prepare them for paints and stains. These are a great option for if you have a specific colour in time, perhaps to match existing mouldings or furniture. At Howarth, we recommended this type of door for customers who are looking for a customisable option.

We also offer other types of doors, such as doors with glass, bifold doors and oak doors - which are a few of our most popular and recommended options.

We also sell a wide range of paints, stains, and preservatives to help you finish the job.

For further information and expert advice regarding wooden internal doors, please contact your friendly local Howarth branch.

Frequently Asked Questions

How much can I trim off an internal fire door?
Make sure to not trim off more than 5mm per side.
What size hinges do I need for internal doors?
You will need 75mm hinges for a 35mm thick internal door.
How wide is a standard internal door?
A standard internal door has a width of 762mm x 1981mm, which equates to a width of 2ft 6in.
What is the smallest internal door size?
The smallest internal door size Howarth offers is 1981mm x 457mm, but we also offer a made to measure service.
How much does an internal door weigh?
Based on the 1981mm x 457mm door being our smallest, it weighs approximately 21kg. Our biggest and heaviest door at 2040mm x 826mm weighs around 39kg.
How to measure for new internal doors?
First measure the width - across the top, the middle and bottom. The largest measurement will be your door width. Then, measure the height within the frame - at the left-hand side, centrally and at the right. The largest measurement is your door height.
How to hang an internal wooden door?
To hang an internal wooden door, you must first unscrew the existing door from your home. The new door will then need to be trimmed to size. However, before cutting a door down, always measure it against the open door as a template and note where to plane or cut down if necessary. Use a panel saw to lower the height of the new door by more than 6mm. Sand it smooth after that. Cutting off less than 6mm requires only a hand or power plane. The hinge pivots (edges) should extend beyond the frame edge. Remove the hinges from the door frame and line them with your pencil markings on the edge of the door. With a chisel and mallet, tap along the shape of the hinge forms. Check that the chisel's "bevel" (sloped edge) is facing the waste wood. Check for flush hinges and fasten them with one screw per hinge. Make a beginning hole with a screw or a bradawl that is slightly smaller than the screw. After that, you may begin installing your new door. While the door is supported on wedges and at right angles to the frame, secure the hinge flaps to the door frame. To allow for adjustments, use only one screw. Make sure the door opens and closes smoothly. If it does, you can then replace the door's remaining screws.
Can you paint concrete slabs?
Yes, you can paint concrete slabs. Make sure you clean the concrete slabs thoroughly and prep them before painting.

How to guides

A Guide to Choosing Interior Doors

Looking for internal doors, but don't know where to start? Our guide is here to help.

Introducing Jigtech

Discover the innovative tool that speeds up the installation of doors.

How to install an internal door

How to install an internal door guide including delivery and storage things to consider.

10 Things to Consider when purchasing internal oak doors

A guide explaining what things to consider when purchasing doors.

Internal Door Fitting Instructions

Do's and Don'ts when it comes to fitting your internal doors.

Understanding Door Construction - JB Kind Doors

An article explaining the different door constructions - read more to find out.

Customer Inspiration