Installation plan · Arched
How to Install Arched Wall Molding for Renters (Removable)
Plan a arched installation with a dated workflow, material checklist, and links to related catalog guides.
Project calculator
Overview
Upper frames finish in a half-round arch instead of a flat top. The curve softens a headboard or reading-nook wall. Soft curves behind beds, in nurseries and entryways.
Why for renters need a plan
Upper frames finish in a half-round arch instead of a flat top. The curve softens a headboard or reading-nook wall. Choose a self-adhesive kit and skip caulk so the pieces can come off later.
Building the arched pattern
Arched tops are pre-formed in MDF; the straight sides and the bottom rail are cut to the same width as the arch. Fix the arch first, then hang the sides from it.
Wall elevation
Living Room wall sizes: arched accent wall layout
| Wall width | Frames per row | Frame width | Frame height (upper / lower) | Molding incl. 10% waste | 240 cm sticks | Chair rail pieces (300 cm) |
|---|---|---|---|---|---|---|
| 12 ft | 4 | 31 in | 50 / 21 in | 32.26 m | 14 | 2 |
| 15 ft | 5 | 31.2 in | 50 / 21 in | 40.43 m | 17 | 2 |
| 18 ft | 6 | 31.3 in | 50 / 21 in | 48.6 m | 21 | 2 |
Cut list for a 15 ft wall
| Piece | Quantity | Length |
|---|---|---|
| Frame top and bottom (lower row) | 10 | 31.2 in |
| Frame sides (lower row) | 10 | 21 in |
| Arch frame sides (upper row) | 10 | 34.4 in |
| Arch top + bottom rail (upper row) | 5 | 31.2 in span |
| Chair rail | 2 | 300 cm lengths |
Steps: for renters
order: 1; text: Choose a self-adhesive kit and skip caulk so the pieces can come off later.; items: Self-adhesive kit · Degreaser · Painter's tape
order: 2; text: Clean the wall with a degreaser so the adhesive grips.; items: Self-adhesive kit · Degreaser · Painter's tape
order: 3; text: Paint the molding before installing so you do not paint the wall.; items: Self-adhesive kit · Degreaser · Painter's tape
order: 4; text: Press each piece for several seconds; remove slowly with gentle heat when you move.; items: Self-adhesive kit · Degreaser · Painter's tape
Pre-cut kits for this wall
Pre-cut kits that fit this project. Open a kit for photos, options and pricing.
01 / KITDouble Arched Wall Molding Set | Pre-Cut MDF Decorative Wall Panels
From $133.60
View kit
02 / KITArched Accent Wall Trim Molding Kit, 3 Widths | Pre-Cut MDF
From $58.40
View kit
03 / KITFlexible Arch Trim Wall Molding Kit | Pre-Cut MDF Decorative Wall Panels
From $83.40
View kit
04 / KITU Shaped Arch Wall Trim Molding Kit | Pre-Cut MDF Medium & Large
From $81.40
View kit
05 / KITFlexible Arched Wall Molding, Paintable MDF Wall Trim, Pre-Cut Arch Decorative Wall Panels | Picture Frame Molding, Accent Wall Trim
From $73.60
View kit
06 / KITHalf Wall Arched Wainscoting Panels Kit | Pre-Cut MDF Easy Installation
From $73.60
View kitQuestions
How much molding do I need for a 15 ft living room wall with arched frames?
About 40.43 m (133 linear ft) including a chair rail and 10% waste, which is 17 sticks of 240 cm. That assumes 5 frames per row, 31.2 in wide, on an 8 ft ceiling.
How high should the chair rail be in a living room?
About one third of the ceiling height: 32 in on an 8 ft ceiling, 36 in on 9 ft and 40 in on 10 ft. Center the layout on the sofa or TV rather than the wall when furniture is off-center.
Trace the details
Sources & dates
This is a planning workflow, not a substitute for the selected product manufacturer's installation, safety, fastening, or cure instructions.
- Paint color dataset (screen approximations; LRV calculated)Recorded November 11, 2026
- DecoMoldings product catalogRecorded November 11, 2026