Installation plan · Picture Frame
How to Install Accent Wall Molding on Inside and Outside Corners
Plan a picture frame installation with a dated workflow, material checklist, and links to related catalog guides.
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Overview
Single rectangles of 2.5 cm molding, evenly spaced. The most adaptable layout: it works on short and long walls and in any room. Clean outlines that suit modern and transitional rooms.
Why inside and outside corners need a plan
Single rectangles of 2.5 cm molding, evenly spaced. The most adaptable layout: it works on short and long walls and in any room. Frame corners are 45 degree miters; pre-cut kits arrive mitered.
Building the picture frame pattern
Each frame is four pieces of 2.5 cm molding with 45 degree miters. Set the frames out from the center of the wall, keep every gap equal, and let the margins at the corners match the gaps.
Wall elevation
Living Room wall sizes: picture frame 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 | 5 | 24 in | 50 / 21 in | 37.27 m | 16 | 2 |
| 15 ft | 6 | 25.3 in | 50 / 21 in | 45.82 m | 20 | 2 |
| 18 ft | 7 | 26.3 in | 50 / 21 in | 54.37 m | 23 | 2 |
Cut list for a 15 ft wall
| Piece | Quantity | Length |
|---|---|---|
| Frame top and bottom (lower row) | 12 | 25.3 in |
| Frame sides (lower row) | 12 | 21 in |
| Frame sides (upper row) | 12 | 50 in |
| Frame top and bottom (upper row) | 12 | 25.3 in |
| Chair rail | 2 | 300 cm lengths |
Steps: inside and outside corners
order: 1; text: Frame corners are 45 degree miters; pre-cut kits arrive mitered.; items: Miter box · Fine-tooth saw · Caulk · Painter's tape
order: 2; text: For a chair rail on an inside corner, cut both ends at 45 degrees and press them tight before the adhesive sets.; items: Miter box · Fine-tooth saw · Caulk · Painter's tape
order: 3; text: On outside corners, dry-fit both rail pieces first; caulk fills small gaps from walls that are not square.; items: Miter box · Fine-tooth saw · Caulk · Painter's tape
order: 4; text: Keep frames at least 3 to 4 in away from a corner so the margin looks deliberate.; items: Miter box · Fine-tooth saw · Caulk · 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 / KITArched Accent Wall Trim Molding Kit, 3 Widths | Pre-Cut MDF
From $58.40
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02 / KITLiving Room Herringbone Pattern Wall Molding Kit, Ready to Assemble for Living Areas | Pre-Cut & Primed
From $235.00
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03 / KITQuick Install MDF Board and Batten Panels, Trim Wall Molding Kits | Easy DIY Solution W:75mm x T:8mm
From $592.00
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04 / KITHalf Wall Shadow Box Ready to Assemble Wall Paneling Package, Factory Primed Half of Wall
From $235.00
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05 / KITSelf-Adhesive Trim Wall Moulding 3 Upper, 3 Bottom Picture Frames, Quick Easy Installation
From $75.00
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06 / KITPicture Frame Trim Wall Molding Kit, 4 Upper, 4 Middle, & 4 Bottom Frames | Precut Easy Installation
From $184.00
View kitQuestions
How much molding do I need for a 15 ft living room wall with picture frame frames?
About 45.82 m (150 linear ft) including a chair rail and 10% waste, which is 20 sticks of 240 cm. That assumes 6 frames per row, 25.3 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