Knowing what you’re looking for is easy, but it’s not easy to find when you’re not sure exactly what it’s called.

Explaining ‘the bits that hold the glass in’ isn’t as easy as you’d think!

That’s why at Door Superstore we’ve put together a guide to what the various parts of a door are called, and what they do, too.

Below you’ll also find a diagram explaining where each part of the door is.

We offer a range of internal doors and external doors. Browse our selection for more information.

Table of contents

Call us banner at Door Superstore

Parts of a door – The basics

XL Joinery Forli Fully Finished Walnut Clear Glass Internal Door


An architrave is a piece of wood that goes around the door frame to cover the gap between the wall and the door frame. It’s often selected for decorative purposes.


Beading is only found on glazed doors. It’s the piece of wood that surrounds the glazing to hold the glazing in place.


The wooden framework sits over the edge of the door frame. This is what architraves will be fitted around. Also known as door lining.


This is the frame the door sits flush in. The hinges are installed on the frame.


Another name for door casing, perhaps more common, it is the wooden framework that sits over the edge of the door frame.


A door jamb is one part of a whole door frame. It refers to whichever side the hinges are mounted on.

Diagram showing the different parts of a door.


A door sill is only really prevalent on external doors. It’s a piece of timber or metal that has a seal attached underneath it. The door sill fits on the front of the door, facing outwards, to keep any dirt and water coming in underneath the door. This is often referred to as a threshold or a weathering bar.

Weathering bar attached to an external door.

The image to the right shows a door sill, or weathering bar, attached to an external door. In areas with paths that slope downwards towards an external door, or areas that may be susceptible to pooling water, they’re a great investment to ensure that any unwanted rainwater or even previously stagnant water doesn’t come into the building.

Door sills also go some way to preventing a draught, but we would recommend using a draught excluder internally to fully counteract this.

If you would like to know more about doors or need any other advice, contact us using the live chat or give us a call on 01752 422 501.

Was this guide useful?

Thanks for rating this article.

Mentioned in this product guide: