What is architrave? In a UK home, it is the trim around a door or window that covers the junction between a frame and the wall. It is decorative, but its width, profile and fixing also hide the accuracy of the opening beneath it.
Before replacing it, inspect the frame, reveal and wall. If the trim is loose because the substrate is damp or the frame is moving, a new profile will only conceal the cause for a short time. internal frame measuring advice
Understand the trim around an opening
Architrave can be square, chamfered, torus, ogee or a bespoke profile, and it can sit proud or flush to the lining. Our door-frame guide explains the parts behind the trim, which helps decide how much coverage the new casing needs. internal lining guidance
Compare profiles, widths and materials
MDF gives a consistent painted surface, timber offers grain and flexible profiles help with curved details. Compare the head, legs, returns and relationship with skirting; our bullnose skirting guide is useful for coordinating a simpler shadow line. timber trim preparation
Measure, cut and finish the casing
Measure each leg and the head, check corner angles and dry-fit the casing before fixing. Use the HSE electricity-safety guidance before drilling near sockets, switches or concealed cables.
Measure, position and prepare
Record opening width, wall thickness, frame reveal, floor level and service routes. Leave room for the door or window to operate and for future caulk or paint repairs. HSE electricity-safety guidance
- Measure the frame and reveal before choosing width.
- Dry-fit head and legs together.
- Check corners instead of assuming 90 degrees.
- Fix into sound material and protect cut ends.
- Coordinate the profile with skirting and other trim.
Use and maintain it well
Dust the profile, fill small fixing holes and caulk the wall joint where appropriate. Seal cut ends near floors and windows, and repair damp before the next finish coat.
Common mistakes to avoid
- Covering a moving or damp frame.
- Using one old measurement for every opening.
- Forcing a mitre on an uneven corner.
- Drilling without checking services.
- Painting before joints and filler are ready.
Prices are indicative and not financial advice.
Frequently Asked Questions
What should I decide first about what is architrave?
Architrave can be square, chamfered, torus, ogee or a bespoke profile, and it can sit proud or flush to the lining. Our door-frame guide explains the parts behind the trim, which helps decide how much coverage the new casing needs.
Which what is architrave options are worth comparing?
MDF gives a consistent painted surface, timber offers grain and flexible profiles help with curved details. Compare the head, legs, returns and relationship with skirting; our bullnose skirting guide is useful for coordinating a simpler shadow line.
How should I measure and prepare for what is architrave?
Record opening width, wall thickness, frame reveal, floor level and service routes. Leave room for the door or window to operate and for future caulk or paint repairs.
How can I keep what is architrave working well?
Dust the profile, fill small fixing holes and caulk the wall joint where appropriate. Seal cut ends near floors and windows, and repair damp before the next finish coat.
Final Thoughts
Architrave is the visible bridge between a frame and the wall. Once you know what the trim is covering, measuring, profiling, fixing and painting become much more predictable.
