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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 visualiser here.

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    JB Kind Aria Internal Fully Finished Grey Door 1981 x 610 x 35mm

    Light grey wood effect laminate internal door with full length fluted black painted grooves. Can be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully...
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    JB Kind Aria Internal Fully Finished Grey Fire Door 1981 x 610 x 44mm

    Light grey wood effect laminate internal door with full length fluted black painted grooves. This door cannot be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and...
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    JB Kind Aria Internal Fully Finished Grey Glazed Door 1981 x 610 x 35mm

    Light grey laminate internal glazed door with full length fluted black painted grooves. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors section of the...
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    JB Kind Aria Internal Fully Finished Oak Door 1981 x 610 x 35mm

    Oak wood effect laminate internal door with full length fluted black painted grooves. Can be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
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    JB Kind Aria Internal Fully Finished Oak Fire Door 1981 x 610 x 44mm

    Oak wood effect laminate internal door with full length fluted black painted grooves. This door cannot be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully...
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    JB Kind Aria Internal Fully Finished Oak Glazed Door 1981 x 610 x 35mm

    Oak wood effect laminate internal glazed door with full length fluted black painted grooves. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors section of...
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    JB Kind Aria Internal White Primed Door 1981 x 610 x 35mm

    White primed internal door with full length fluted white grooves. Can be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal...
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    JB Kind Aria Internal White Primed Fire Door 1981 x 610 x 44mm

    White primed internal door with full length fluted white grooves. This door cannot be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit...
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    JB Kind Aria Internal White Primed Glazed Door 1981 x 610 x 35mm

    White primed internal glazed door with full length fluted white grooves. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors section of the website to view...
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    JB Kind Belton White Primed Door 1981 x 610 x 35 mm

    Classic white primed panelled interior door with decorative flush mouldings
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    JB Kind Classique Internal White Primed Bi-Fold Door 1981 x 610 x 35mm (24")

    Classic white primed moulded panel interior bi-fold door with grained effect. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for bespoke door options: Maximum Trimming From Each Side: mm...
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    JB Kind Cosmo Fully Finished Grey Glazed Internal Door 1981 x 610 x 35mm (24"')

    Contemporary industrial style grey 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. Visit our internal doors section of the website to...
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    JB Kind Cosmo Fully Finished Grey Internal Door 1981 x 610 x 35mm (24"')

    Contemporary industrial style grey interior door with recessed panels. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors section of the website to view...
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    JB Kind Eiger Internal Oak Door 1981 x 610 x 35mm (24")

    Shaker style oak internal door with two recessed panels, supplied unfinished. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for bespoke door options: Maximum Trimming From Each Side: 12mm...
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    JB Kind IPLY Paint Grade Internal Veneer Door 1981 x 610 x 35mm (24")

    Paint grade veneered internal door. This door can be trimmed to the following specifications, for anything else please contact our customer helpline for bespoke door options: Maximum Trimming From Each Side: 3mm. Maximum Trimming From Bottom: 10mm...
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    JB Kind Osborne White Primed Door 1981 x 610 x 35 mm

    Classic white primed interior door with 3 recessed panels and decorative flush mouldings
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    JB Kind Thames Internal White Primed Door 1981 x 610 x 35mm

    Cottage style white interior door with grooved centre panel, supplied ready primed. Can be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors...
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    JB Kind Thames Internal White Primed Fire Door 1981 x 610 x 44mm

    Cottage style white interior door with grooved centre panel, supplied ready primed. This door cannot be used as part of a pocket door system.Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully...
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    JB Kind Thames Internal White Primed Glazed Door 1981 x 610 x 35mm

    White cottage style half glazed internal door with grooved bottom panel, supplied primed. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors section of...
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    JB Kind Thames Original Oak Door 1981 x 610 x 35mm

    Cottage style oak internal door with grooved centre panel, supplied ready to finish
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    JB Kind Tigris Internal Fully Finished Light Grey Glazed Laminate Door 1981 x 610 x 35mm

    Contemporary light grey laminate door with clear glass panel and etched lines, supplied fully finished. Howarth supply a wide range of internal doors, including oak doors, white primed doors, fire doors, and fully finished doors. Visit our internal doors...
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    LPD 4 Panel Clear Pine Door 1981 x 610 x 35mm (24 Inch)

    This narrow door design features two raised rectangular shaped panels in a characterful Clear Pine wood grain finish.
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    LPD 4P Oak Door 1981 x 610 x 35mm (24 Inch)

    A versatile door design, the 4P features four raised rectangular shaped panels and an appealing unfinished white Oak wood finish.
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    LPD 4P White Primed Door 1981 x 610 x 35mm (24 Inch)

    This textured door design features four raised rectangular shaped panels crafted from an appealing white composite.

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.

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