Installation plan · Nested
How to Install Nested Wall Molding Along a Staircase
Plan a nested installation with a dated workflow, material checklist, and links to related catalog guides.
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Overview
A second, smaller frame set 4 in inside each outer frame using the same profile. It doubles the shadow lines and gives a classic, layered look. Layered depth for traditional, French and formal rooms.
Why on stairs need a plan
A second, smaller frame set 4 in inside each outer frame using the same profile. It doubles the shadow lines and gives a classic, layered look. Measure the stair angle with an angle finder.
Building the nested pattern
Fix the outer frames first, then set each inner frame 4 in inside with spacer blocks so the reveal is identical on all four sides. Both frames use the same 2.5 cm profile.
Wall elevation
Living Room wall sizes: nested 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 | 56.33 m | 24 | 2 |
| 15 ft | 5 | 31.2 in | 50 / 21 in | 70.63 m | 30 | 2 |
| 18 ft | 7 | 26.3 in | 50 / 21 in | 90.19 m | 38 | 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 |
| Frame sides (upper row) | 10 | 50 in |
| Frame top and bottom (upper row) | 10 | 31.2 in |
| Inner frame pieces | 40 | 23.2 in / 13 in |
| Chair rail | 2 | 300 cm lengths |
Steps: on stairs
order: 1; text: Measure the stair angle with an angle finder.; items: Angle finder · Laser level · Miter box · Painter's tape
order: 2; text: Run the chair rail parallel to the stair stringer at the same height above each step nose.; items: Angle finder · Laser level · Miter box · Painter's tape
order: 3; text: Make frame tops and bottoms follow the stair angle; vertical sides stay plumb.; items: Angle finder · Laser level · Miter box · Painter's tape
order: 4; text: Cut the angled corners at half the stair angle plus 45 degrees, dry-fit, then fix.; items: Angle finder · Laser level · Miter box · 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 / KITNested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation
From $295.00
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02 / KITAccent Wall Panels Kit, 3 Upper & 2 Bottom Nested Frames | Self-Adhesive Pre-Cut
From $220.00
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03 / KITSelf Adhesive Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed
From $220.00
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04 / KITInstant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation
From $333.00
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05 / KITNested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation
From $277.00
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06 / KITNested Accent Wall Molding Kit, 3 Upper & 3 Bottom Nested Frames | Easy Installation
From $180.00
View kitQuestions
How much molding do I need for a 15 ft living room wall with nested frames?
About 70.63 m (232 linear ft) including a chair rail and 10% waste, which is 30 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.
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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