How To Install Cedar Channel Siding

How To Install Cedar Channel Siding

Red Cedar is a high-quality wood known for its beauty, durability, lightweight, thermal insulation, and dimensional stability. It adds character and distinctiveness to your property that no other siding can equal. It will provide years of low-maintenance performance if it is fitted and finished correctly.

Read this post attentively before commencing your siding job; it provides important information to ensure that the siding is put correctly and performs as planned.

With minimal work and waste, channel siding can be installed quickly. The Channel pattern is often laid horizontally, with one board’s rear edge having a recessed section that receives the contoured top-rear edge of the board next to or below it to keep water out during rain.

A Few Considerations Before Cedar Channel Installation

Western Red Cedar channel siding is a common type of lap siding that offers great weather protection, particularly in places where moisture levels fluctuate throughout the year. Each piece of channel siding has a profile that partially overlaps the next, providing a deep, recessed channel look.

Determine The Material

Always buy recognized grades and make sure you know what grade you’re getting. Grades are created to have distinct appearances and functions. Before you begin, double-check that the siding you’ve chosen fulfills your needs. Any product that is judged to be defective or unattractive for any reason.

Should not be installed; if you come across one, STOP and contact your supplier right away.

Western Red Cedar is one of the most stable softwoods, but it is still a natural substance that reacts to its surroundings. As it accumulates or loses moisture, cedar siding can swell or contract to achieve balance with the moisture content of the surrounding air.

Before installing cedar siding, make sure the moisture content is balanced. This will prevent movement later on.

Store At A Safe Place

Western Red Cedar siding requires protection from direct sunshine, water saturation, snow, ice, dirt, and other elements until it is erected. So that moisture does not absorb through the bottom boards of the stack, store the siding flat and off the ground on stickers and a vapor barrier.

Water will not pool on the cover if protected with a waterproof covering lifted in the center. Because excellent air circulation is necessary, do not totally close the bundle. Before usage, the siding should be stored in an enclosed structure such as a garage.

Apply Finish To All Surface Before Installation

Apply a finish to all surfaces before installation is suggested. The best finishes are those that have been applied in the factory. They ensure that the finish performs at its optimum. The ultimate finish and appearance will decide the type of coating used.

The finish will protect the wood from moisture absorption and UV degradation and aid, prevent mildew and extractive staining, and extend the life of topcoats.

Installation Of Cedar Channel Siding

Make sure that flashings are installed before installing siding to prevent moisture from entering wall and roof spaces. When it comes to moisture control in wall assemblies, flashing is a crucial line of defense.

The flow of water is intercepted and directed away from the building to designated drainage routes by flashing. Horizontal flashing should be installed from the top of all wall penetrations and any material or material orientation change.

To allow water to drain away from the wall, the flashing should be angled downward. The flashing ledge should be 14 inches above the siding or trim. Caulk should not be used where the flashing meets the trim or other materials. It is important to note that caulking is not an appropriate substitute for flashing.

Use High-Quality Caulks

Seal gaps around windows, doors, corners, and other external joints exposed to potential water incursion with high-performance acrylic-latex or terpolymer rubber caulks or sealants.

Pure silicone and transparent caulks are not approved for use on Western Red Cedar. Caulking isn’t a long-term solution; thus, it needs to be maintained regularly.

Caulking can fail if it isn’t inspected and maintained, trapping water and causing serious moisture problems. It should not be relied upon as the only barrier to moisture entry. Caulk should not be used in situations where moisture will be prevented from escaping the wall hollow.

Install Tongue And Groove

Siding with tongue and groove can be put horizontally or vertically. Start at the bottom and work your way up, keeping the groove edges facing downwards. Blind nailing siding up to 6 inches wide with one siding nail per bearing toe-nailed through the base of each tongue is possible.

Face nailing wider siding with two nails per piece is recommended. Begin vertically at one corner, with the grooved edge facing the adjacent wall. To ensure that the first board is plumb, use a level or plumb line.

To guarantee a flush fit, the grooved edge of the first board may need to be cut. Siding is fastened to horizontal blocking lines or furring strips installed between studs. Pieces up to 6 inches can be blind nailed, and larger pieces should be face nailed, as with horizontal installation.

Install Lap Siding

Vertically or horizontally, lap sidings can be erected. Start with the lowest course and work your way up with the channels pointing upwards for horizontal applications. If the siding is air or kiln-dried, leave a 1/8-inch expansion gap between sections.

Overlaps should not be nailed through. Use one nail one inch up from the lap for siding up to 6 inches wide. Face nail patterns with two nails each piece, spacing them 2-1/2 to 3 inches apart to allow dimensional movement without separating. Siding should be affixed to horizontal blocking or furring strips for vertical applications.


Start at the bottom and work your way up when installing horizontal channel siding. Siding should be attached to blocking or furring strips as needed for vertical or diagonal applications to ensure that the nail penetrates solid wood. To keep the siding in place, use stainless steel or other corrosion-resistant ring shank nails.

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