What this work covers
Moulding installation fixes flat or recessed profiles along the ceiling and wall junction, closes corners and joints, and fills fixing marks before paint or wallpaper. The profile may look like a simple line, but it carries the level of the whole room. Ceiling variation, real corner angles, and clearance around doors and cabinets all need to be resolved before it is fixed.
When this work is needed
Use it to define or conceal the ceiling and wall junction, create a flat or recessed trim line, and prepare board edges for paint or wallpaper. A trimless scheme does not simply omit the profile; it shifts the accuracy requirement to the plasterboard, corner bead, and putty finish.
Decide before setting the trim line
Choose the profile and agree how it will cross corners, steps, doors, and fitted furniture.
- Flat moulding, recessed moulding, or a fully trimless detail
- Profile width, thickness, colour, and start and end points by room
- Treatment of internal and external corners and ceiling level changes
- Clearance at casings, cabinets, curtain pockets, and opening doors
- Pin-mark, joint-filling, and sanding scope before paint or wallpaper
Check in the quote
The measured length needs to be supported by clear corner, substrate, and correction allowances.
- Are length, profile type, width, and thickness listed for each room?
- Are ceiling and wall level variations and board-joint corrections included?
- Are measured corner cuts, test fitting, adhesive, and joint pressing specified?
- Are tacker marks, joints, wood filler, and sanding included?
- Are door and furniture clearance checks and final cleanup included?
If you have photographs of the ceiling junction or a carpentry quote, I can help check moulding quantity, corner cuts, correction work, and possible interference.
What to check on site
Moulding should establish a calm finish line, not merely hide an uneven junction. Set the route and corner cuts first, then hand it over only after the joints and clearances are ready for the next finish.
- Molding Reference Line and Cutting Complete
Survey the ceiling and wall junction, then mark the profile height and endpoints around the full room. Do not assume that every corner is 90 degrees; test-fit offcuts and adjust the mitre until the face closes without an open edge. - Molding Fixing and Joint Pressing Complete
Fix long profiles to the reference line and stagger straight joints so they do not cluster in one view. Apply adhesive across the joint faces and hold corners and butt joints until the profile fronts remain flush and neither end lifts. - Correction, Inspection, and Cleanup Complete
Fill tacker and adhesive marks without flattening the profile, then sand the repair smooth. Use side light to read the full line, open doors and cabinets to their limits, and correct any contact before paint or wallpaper begins.
Where problems usually start
- Open joints at corners If the cutting angle is not adjusted to the actual corner, the joint opens and becomes even more obvious after paint or wallpaper.
- Pinholes visible after painting Tacker holes and joint lines left at the carpentry stage repeat along the finished profile as small pits and shadows.
- Moulding pulling away Incomplete adhesive contact or insufficient pressure can let the profile open or detach as the materials shrink and expand.
- Interference discovered after painting If doors and cabinets are not opened fully before handoff, the finished moulding may need to be planed and repainted later.
Do not rely on a thick layer of filler to close a poorly cut joint. Correct the first corner and the level line, then check every moving door and cabinet before finishing.
Keep the profile specification, room lengths, reference lines, measured corner angles, fixing locations, joint repairs, and door or furniture clearance photographs.
Timing and records
Allow about 8 to 16 hours on site. More rooms, corners, ceiling steps, recessed profiles, and clearance corrections can extend this. Let the wood filler dry fully before paint or wallpaper starts.
Retain the profile and room lengths, ceiling-level survey, corner measurements and test cuts, adhesive and tacker fixing, filled joints, and final opening-clearance checks.
Moulding follows the plasterboard base and hands over to putty and wallpaper, so the substrate level and final thickness need one shared finish line.