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Western Red Cedar Shingles #4 Undercoursing (Bundle)
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Western Red Cedar Shingles #4 Undercoursing (Bundle)
These are western red cedar shingles in #4 undercoursing grade, sold by the bundle. Undercoursing shingles are the hidden base layer beneath the exposed shingles in a double-coursed wall.
#4 undercoursing is not an exposed grade. It allows more knots and defects than the higher shingle grades, so use it where it will be covered, and choose a higher grade for any course that shows.
Features and Common Uses
- Western red cedar, naturally resistant to rot and insects
- #4 undercoursing grade, a low-cost grade for covered use
- Sold by the bundle for easy job-site handling
- Unfinished and ready to nail
Commonly used for:
- Under course of double-coursed shingle sidewalls
- Hidden layers behind exposed shingles
- Spacers and fillers behind siding
- Craft and garden projects
Specifications
| Product | Western Red Cedar Shingles, #4 Undercoursing, Bundle |
|---|---|
| Species | Western red cedar |
| Grade | #4 Undercoursing |
| Sold as | Bundle |
| Finish | Unfinished |
Shingle length, thickness and coverage per bundle are set by the mill and are not listed here. Check the bundle label, and confirm coverage with your installer before you order.
Frequently Asked Questions
What is undercoursing?
Undercoursing is the hidden under layer of a double-coursed shingle wall. The exposed shingles sit on top and cover it, so the grade only needs to be sound, not clear.
Can I use #4 undercoursing for a roof?
No. Roofing needs a higher shingle grade chosen for the roof pitch and the fire and wind requirements in your area. Ask your building inspector or installer before you buy.
How do I fasten cedar shingles?
Use hot-dip galvanised or stainless steel nails so the fasteners do not stain or corrode the cedar. Check the label on your fasteners for the right size.