Natural Wood Siding Soffit & Trim Interior Cladding Premium  ·  Rocky Mountain Finishes  ·  May 2026

Hemlock Siding, Soffit & Trim — CVG and CMG

A clean, consistent natural wood species for prefinished exterior and interior applications in Colorado mountain construction

Hemlock is one of the cleanest natural wood species available for prefinished siding, soffit, and trim work. Its tight, uniform grain takes finish evenly, presents consistently from board to board, and holds color well over time. For Colorado mountain construction — where wood character matters and the details show — hemlock delivers a refined look that cedar and pine cannot match at the same grade level.

Rocky Mountain Finishes carries hemlock in two product lines: CVG (Clear Vertical Grain) and CMG (Clear Mixed Grain). Both are available prefinished in the full RMF color range and backed by our finish warranty. Thermally modified and FRTW options are also available.

Why Hemlock

Hemlock is a tight-grained, consistent species with a fine, smooth face and relatively uniform color from board to board. Compared to cedar or pine, hemlock produces fewer resin pockets, less color variation, and a more predictable surface for prefinishing. The result is an installation that looks intentional — clean lines, consistent color, and a face that holds finish without blotching or uneven penetration.

• Tighter grain than cedar or pine — cleaner, more consistent face
• Lower resin content — fewer bleed-through issues under finish
• Takes prefinish evenly — color is consistent across an entire installation
• Works exterior and interior — soffits, siding, trim, accent cladding, and feature walls
• Strong dimensional stability for a natural wood — holds its shape through humidity swings

CVG Hemlock — Clear Vertical Grain

CVG stands for Clear Vertical Grain. The vertical grain cut means the growth rings run perpendicular to the face of the board — this is the most stable orientation for natural wood and the configuration that presents the cleanest, most refined appearance. The CVG grade is also knot-free, producing a consistent face from end to end with no character interruptions.

CVG hemlock is the premium grade. It is the right call for high-visibility applications where a clean, architectural look is non-negotiable — soffits visible from the ground, interior accent cladding, trim at eye level, and feature wall applications where every board is on display.

CVG Hemlock Smooth Soffit — Clear Satin, T&G profile

CVG Hemlock 2x Soffit — Custom Grey/Brown/Beige prefinished

CVG Hemlock 2x Interior Cladding — Custom Grey/Brown/Beige

CVG Hemlock 2x Interior Cladding — installed detail, vertical grain clearly visible

CMG Hemlock

CMG hemlock is a more cost-effective, clear solution — available in a wide range of textures including 1x, 2x, Rough, and Smooth. It is the right choice for applications where hemlock's species characteristics matter but the strict grain orientation of CVG is not the priority. CMG hemlock is commonly used for soffits, siding accent zones, and interior cladding where the prefinished color and species quality are the spec drivers.

CMG hemlock paired with a contrasting primary siding material is one of the most common high-end exterior combinations in our market — the hemlock soffit brings warmth and grain character to the underside where it is visible from the ground, while the primary field material handles weather exposure and compliance.

CMG Hemlock Smooth Soffit — Clear Satin | Pine Rough Siding — Custom Gray

CMG Hemlock Soffit — elevation view, paired exterior application

CMG Hemlock Smooth Soffit — close detail, satin clear finish

Color Options

Both CVG and CMG hemlock are available prefinished in the full RMF color range — named for Colorado's 14,000-foot peaks. Any color can be applied to either product line. View the full RMF color catalog for the complete selection.

Elbert

Wilson

Uncompahgre

Crestone

Cameron

Princeton

Red Cloud

Wetterhorn

WUI Considerations

Benefits & Drawbacks