DecoMoldings

inspiration · Picture Frame

SW Rainwashed Staircase Wall Molding

SW Rainwashed Staircase Wall Molding: wall elevation, color data (LRV 59.2), staircase layout for 8, 12, 16 ft walls, cut list, calculator and pre-cut kits.

Catalog snapshot View 2 sources ↓

Project calculator

Wall molding linear-foot estimate

Estimate for rectangular molding frames.

Estimated quantity109.08 linear feet

Divide by 7.87 ft (240 cm stick) and round up for the number of sticks.

Formula & assumptionsframe_count * 2 * (frame_width_inches + frame_height_inches) / 12 * (1 + waste_percent / 100)

Assumes identical rectangular frames. The waste allowance is editable. The estimate does not optimize cuts or include separate rails, baseboards, or other trim.

Overview

SW Rainwashed is a light gray with a green undertone and a calculated LRV of 59.2. Against white trim the contrast ratio is 1.47:1, which gives almost no contrast, so the molding reads through shadow alone (a tone-on-tone look); painted tone-on-tone, the picture frame pattern shows only through its shadow lines.

Picture Frame layout on a 12 ft staircase wall

Molding over the full wall height, upper and lower rows divided by a chair rail. On a 12 ft wall with an 8 ft ceiling this gives 5 frames per row, each 24 in wide, with 50 in upper and 21 in lower frames. The layout uses about 37.27 m of 2.5 cm molding, or 16 sticks of 240 cm, including 10% waste. Frames follow the stair angle: keep the bottom rail parallel to the stringer.

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.

Painting molding in SW Rainwashed

Grays sit in the middle of the contrast range: white trim reads clearly, while same-color trim gives a quiet, architectural look.

Wall elevation

SW Rainwashed wall, tone-on-tone trim, picture frame layout on a 12 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
SW RainwashedSherwin-Williams#C2CDC559.2greenlight1.47:110.07:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneSW Rainwashed#C2CDC51:1Trim painted the same color as the wall
matching whiteBM Chantilly Lace#F4F6F11.5:1White with the closest undertone
contrastBlack#1F1F1F10.07:1Dark trim for a graphic outline

Staircase wall sizes: picture frame accent wall layout

Wall widthFrames per rowFrame widthFrame height (upper / lower)Molding incl. 10% waste240 cm sticksChair rail pieces (300 cm)
8 ft326.7 in50 / 21 in23.53 m101
12 ft524 in50 / 21 in37.27 m162
16 ft627.3 in50 / 21 in47.5 m202

Cut list for a 12 ft wall

Planning cut list
PieceQuantityLength
Frame top and bottom (lower row)1024 in
Frame sides (lower row)1021 in
Frame sides (upper row)1050 in
Frame top and bottom (upper row)1024 in
Chair rail2300 cm lengths

Pre-cut kits for this wall

Pre-cut kits that fit this project. Open a kit for photos, options and pricing.

Heritage DIY Board and Batten Panels, Pre-Cut MDF for Fast Installation | Unprimed W:75mm x T:8mm01 / KIT

Heritage DIY Board and Batten Panels, Pre-Cut MDF for Fast Installation | Unprimed W:75mm x T:8mm

From $581.00

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Picture Frame Ready to Assemble Wall Molding Kit, 3 Upper & 3 Bottom Frames | Easy Installation02 / KIT

Picture Frame Ready to Assemble Wall Molding Kit, 3 Upper & 3 Bottom Frames | Easy Installation

From $181.00

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Picture Frame Ready to Assemble Wall Molding Package | Self-Adhesive Paintable Easy Installation03 / KIT

Picture Frame Ready to Assemble Wall Molding Package | Self-Adhesive Paintable Easy Installation

From $285.72

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Nested Frame Nursery Wall Molding Kit, Ready to Assemble | 3 Upper & 3 Bottom Nested Frames04 / KIT

Nested Frame Nursery Wall Molding Kit, Ready to Assemble | 3 Upper & 3 Bottom Nested Frames

From $250.00

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Modern Pre-Cut Flat Wall Molding Kit for Living Areas | Factory Primed & Paintable05 / KIT

Modern Pre-Cut Flat Wall Molding Kit for Living Areas | Factory Primed & Paintable

From $130.00

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Quick Install MDF Board and Batten Panels, Trim Wall Molding Kits | Easy DIY Solution W:75mm x T:8mm06 / KIT

Quick 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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Questions

How much molding do I need for a 12 ft staircase wall with picture frame frames?

About 37.27 m (122 linear ft) including a chair rail and 10% waste, which is 16 sticks of 240 cm. That assumes 5 frames per row, 24 in wide, on an 8 ft ceiling.

Is SW Rainwashed warm or cool?

SW Rainwashed has a green undertone and reads as a light gray. Its calculated LRV is 59.2, so it sits in the mid range, where molding shadows show clearly.

Should trim be the same color as SW Rainwashed walls?

Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds almost no contrast, so the molding reads through shadow alone (a tone-on-tone look) (1.47:1), and black trim gives 10.07:1.

How high should the chair rail be in a staircase?

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. Frames follow the stair angle: keep the bottom rail parallel to the stringer.

Trace the details

Sources & dates

Prices, options and photos come from our product catalog on the date shown. Layout tables are planning estimates; measure your wall before ordering.

  1. Paint color dataset (screen approximations; LRV calculated)Recorded November 11, 2026
  2. DecoMoldings product catalogRecorded November 11, 2026