Picture-frame wall moulding uses decorative lengths to create rectangular outlines on an existing wall. The most important work happens before fixing: deciding where the frames sit, how wide they should be and how the cuts fit the lengths you buy. This guide covers that planning stage so your shopping list reflects the actual layout.
Start with a drawing of the wall
Measure the wall width and height at several points. Mark skirting, door architraves, sockets, switches, radiators and furniture. Decide whether the frames will sit above a dado line, occupy most of the wall height or form a smaller feature behind a sofa.
Choose a consistent measurement convention. In the example below, frame width and height mean the outside dimensions, measured to the long points of the mitred pieces. The visible opening inside the frame will be smaller because the moulding has width.
Work out frame widths and gaps
For equal frames, subtract the two outer margins and all gaps between frames from the usable wall width. Divide the remainder by the number of frames.
Example: a 3,000mm wall with three frames, 200mm margins at each end and two 100mm gaps leaves 2,400mm for frames. Dividing by three gives an outside width of 800mm per frame.
These are example proportions, not a rule for every room. Tape the outlines onto the wall with a product suitable for its finish. Check them from the doorway and with the furniture in place. Move the layout if a socket or wall light creates an awkward interruption.
Calculate the perimeter, then plan the cuts
Suppose each of the three frames is 800mm wide and 1,000mm high. Each frame has a perimeter of 2 × (0.8 + 1.0) = 3.6m. Three frames therefore require 10.8m of finished moulding.
Dividing 10.8m by a 2.4m stock length gives 4.5, but rounding that to five lengths is not a reliable shopping list. The individual pieces must fit, and cuts remove material.
| Requirement | Quantity |
|---|---|
| Vertical pieces, 1,000mm outside long-point length | 6 |
| Horizontal pieces, 800mm outside long-point length | 6 |
| Allocation per 2.4m stock length | One 1,000mm piece plus one 800mm piece |
| Stock lengths for this allocation | 6 lengths, totalling 14.4m |
This allocation leaves material for saw kerf, end trimming and offcuts. Confirm the actual cutting method and condition of the timber before committing. It is a workable example, not a guarantee that every offcut will be useful or that no spare length will be needed. For 90-degree frame corners, the usual arrangement is two 45-degree mitres; make a test corner before cutting the final pieces.
Choose the moulding profile
Cheshire Double Astragal pine, 9 × 21mm × 2.4m, and the 12 × 34mm version are examples to compare. Check the actual profile, finish requirements and wall suitability before selecting one. Keep the same profile and orientation throughout each frame.
Build the whole shopping list
- Decorative moulding in the quantities from your cutting plan.
- Tape measure, pencil, level and layout tape suitable for the wall finish.
- Suitable cutting equipment and the protective equipment specified by its manufacturer.
- Adhesive and, where needed, mechanical fixings compatible with the timber, wall and intended use.
- Suitable preparation materials, filler and finishing products.
- Primer and paint appropriate to the timber and chosen finish.
Check product instructions rather than assuming a particular adhesive bonds to every painted surface. Repair loose or unsound finishes and address moisture problems first. Check for hidden cables and pipes before using mechanical fixings.
Allow for delivery and finishing
At the price checked on 1 November 2026, six 9 × 21mm Astragal lengths at £2.03 total £12.18. The published Status Home Care rate for items over 1.2m is £25, giving an illustrative £37.18 for those lengths and delivery. This excludes all other materials and labour; confirm the final checkout charge for your address and basket. See our shipping policy.
After the layout and cutting list are settled, follow the chosen fitting and finishing products' instructions, including drying times. Browse timber mouldings to select your profile, then check each item against the plan before ordering.
Still deciding on the style? Compare decorative moulding and slatted wall panels before finalising your layout.