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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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  • JBK%20Palomino%20Glazed_1.jpg.jpeg JBK%20Palomino%20Glazed_2.jpg.jpeg

    JB Kind Palomino Internal Oak Glazed Door 1981 x 838 x 35mm (33")

    Contemporary oak veneer internal door, glazed with clear glass and supplied unfinished. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully...
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    JB Kind Pintado Fully Finished Grey Laminate Glazed Door 1981 x 686 x 35mm

    JB Kind Pintado fully finished grey laminate glazed door 1981 x 686 x 35mm bringing natural light into modern interiors.
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    JB Kind Pintado Fully Finished Grey Laminate Glazed Door 1981 x 762 x 35mm

    JB Kind Pintado grey laminate glazed door 1981 x 762 x 35mm with a durable finish and contemporary styling.
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    JB Kind Pintado Fully Finished Grey Laminate Glazed Door 1981 x 838 x 35mm

    JB Kind Pintado fully finished grey glazed door 1981 x 838 x 35mm featuring clear glazing and a durable laminate finish.
  • JBK%20Plaza%20Black%20Glass_1.jpg.jpeg JBK%20Plaza%20Black%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished Black Glazed Internal Door 1981 x 610 x 35mm (24")

    JB Kind Plaza fully finished black glazed internal door 1981 x 610 x 35mm combining elegant glazing with a striking black finish.
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    JB Kind Plaza Fully Finished Black Glazed Internal Door 1981 x 686 x 35mm (27")

    JB Kind Plaza fully finished black glazed internal door 1981 x 686 x 35mm combining contemporary styling with clear glazed panels.
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    JB Kind Plaza Fully Finished Black Glazed Internal Door 1981 x 762 x 35mm (30")

    JB Kind Plaza fully finished black glazed internal door 1981 x 762 x 35mm bringing natural light and modern industrial style to interiors.
  • JBK%20Plaza%20Black%20Glass_1.jpg.jpeg JBK%20Plaza%20Black%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished Black Glazed Internal Door 1981 x 838 x 35mm (33")

    JB Kind Plaza fully finished black glazed internal door 1981 x 838 x 35mm featuring premium glazing and a durable factory finish.
  • JBK%20Plaza%20White%20Glass_1.jpg.jpeg JBK%20Plaza%20White%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished White Glazed Door 1981 x 610 x 35mm (24")

    Contemporary industrial style white interior door with clear glass panels. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
  • JBK%20Plaza%20White%20Glass_1.jpg.jpeg JBK%20Plaza%20White%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished White Glazed Door 1981 x 686 x 35mm (27")

    Contemporary industrial style white interior door with clear glass panels. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
  • JBK%20Plaza%20White%20Glass_1.jpg.jpeg JBK%20Plaza%20White%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished White Glazed Door 1981 x 762 x 35mm (30")

    Contemporary industrial style white interior door with clear glass panels. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
  • JBK%20Plaza%20White%20Glass_1.jpg.jpeg JBK%20Plaza%20White%20Glass_2.jpg.jpeg

    JB Kind Plaza Fully Finished White Glazed Door 1981 x 838 x 35mm (33")

    Contemporary industrial style white interior door with clear glass panels. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
  • JBK%20Quartz%20Glazed_1.jpg.jpeg JBK%20Quartz%20Glazed_2.jpg.jpeg

    JB Kind Quartz White Primed Internal Glazed Door 1981 x 686 x 35mm (27")

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

    JB Kind Quartz white primed glazed internal door 1981 x 762 x 35mm combining elegant glazing with decorating flexibility.
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 686 x 35mm (27")

    Modern moulded panel white primed glazed internal door with ladder style effect. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for...
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 762 x 35mm (30")

    Modern moulded panel white primed glazed internal door with ladder style effect. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for...
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    JB Kind Quattro Internal White Primed Glazed Door 1981 x 838 x 35mm (33")

    Modern moulded panel white primed glazed internal door with ladder style effect. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for...
  • JBK%20Rushmore%20White%20Glazed_4.jpg.jpeg JBK%20Rushmore%20White%20Glazed_1.jpg.jpeg

    JB Kind Rushmore Internal White Primed Glazed Door 1981 x 762 x 35mm (30")

    White shaker style internal glazed door with two clear glass top panels, supplied ready primed. This door can be trimmed to the following specifications, for anything else please contact our customer...
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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...
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    JB Kind Severn Internal Oak Glazed Door 1981 x 686 x 35mm (27")

    JB Kind Severn glazed oak door 1981 x 686 x 35mm features clear glazing to maximise light while showcasing natural oak grain.
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    JB Kind Severn Internal Oak Glazed Door 1981 x 762 x 35mm (30")

    JB Kind Severn glazed internal oak door 1981 x 762 x 35mm adds natural light and contemporary style to living spaces.
  • JBK_OSEV23G_1.jpg.jpeg JBK_OSEV23G_2.jpg.jpeg

    JB Kind Severn Internal Oak Glazed Door 1981 x 838 x 35mm (33")

    JB Kind Severn oak glazed door 1981 x 838 x 35mm supplied unfinished for a bespoke finish to complement your interior.
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    JB Kind Spencer Internal Fully Finished Oak Glazed Door 1981 x 686 x 35mm (27")

    Attractive oak glazed internal door with walnut inlays, supplied fully finished. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for...
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    JB Kind Spencer Internal Fully Finished Oak Glazed Door 1981 x 762 x 35mm (30")

    Attractive oak glazed internal door with walnut inlays, supplied fully finished. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for...

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