---
product_id: 618265774
title: "18\" #4 Undercourse Cedar Kiln Dried Sidewall Shingle 1 Square Carton, Natural"
brand: "miller shingle"
price: "£297.59"
currency: GBP
in_stock: true
reviews_count: 7
category: "Miller Shingle"
url: https://www.desertcart.co.uk/products/618265774-18-4-undercourse-cedar-kiln-dried-sidewall-shingle-1-square
store_origin: GB
region: United Kingdom
---

# Western Red Cedar natural durability 18-inch precision length 1 square carton covers 100 sq ft 18" #4 Undercourse Cedar Kiln Dried Sidewall Shingle 1 Square Carton, Natural

**Brand:** miller shingle
**Price:** £297.59
**Availability:** ✅ In Stock

## Summary

> 🌲 Elevate your sidewalls with the natural strength of cedar – don’t settle for less!

## Quick Answers

- **What is this?** 18" #4 Undercourse Cedar Kiln Dried Sidewall Shingle 1 Square Carton, Natural by miller shingle
- **How much does it cost?** £297.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/618265774-18-4-undercourse-cedar-kiln-dried-sidewall-shingle-1-square)

## Best For

- miller shingle enthusiasts

## Why This Product

- Trusted miller shingle brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Installation:** Ideal for double-course sidewalls and single-course starter shingles
- • **Proudly Made in the USA:** Crafted by Miller Shingle Company with trusted American quality
- • **Premium Western Red Cedar:** Naturally resistant and kiln-dried for enhanced longevity
- • **Generous Coverage per Carton:** Covers up to 100 sq ft at 14" exposure, maximizing project efficiency
- • **Precision Engineered 18" Length:** Perfectly sized for seamless undercoursing and starter rows

## Overview

The 18" #4 Undercourse Cedar Kiln Dried Sidewall Shingle by Miller Shingle Company is a utility-grade, kiln-dried Western Red Cedar product designed specifically for undercoursing in double-coursed sidewalls and starter courses. Each 1 square carton covers up to 100 square feet at 14" exposure, offering efficient coverage with natural durability. Proudly manufactured in the USA, these shingles bring authentic character and reliable performance to your siding projects.

## Description

Miller Shingle 18" #4 Undercourse Cedar Sidewall Shingle is a kiln dried, utility-grade product. Intended for use as the undercoursing of Cedar Shingle Siding. This product is ideal for starter course rows when using the single-course method of shingle installation. It is also perfect for standard undercoursing when using the double-course method. This product is not intended to be used in roofing applications. A 1 square carton will cover approximately 100 Square feet at the recommended 14 inch double course exposure and approximately 50 square feet at 7 inch exposure.

Review: Surprisingly good quality - These were way better quality than I expected. A couple had knots that made them almost unuseable, unless cut in half. For not being premium quality rebutted, and squared, they were actually fairly square. Probably not great shingles for a roof, but excellent shingles for an outbuilding sidewall. If you have a lot of corners you are trying to layer, they can be a little difficult to trim, due to the knots. So corner shingles should be chosen a little more carefully to avoid knots, or weird grain where trimming. I found it easiest to trim corners with a small trimming plane, or a small block plane. All in all they are beautiful shingles that will add a lot of character to your project.
Review: Ouch! Seriously expensive. - Good shingles, shipped right away - way, way over-priced. Go to your local hardware store.

## Features

- Utility Grade Shingle for Under Coursing of Double Coursed Sidewalls and Starter Shingles
- Covers 100 Square Feet at 14” Exposure, 50 Square Feet at 7” Exposure
- Manufactured from Western Red Cedar
- Not Recommended For Roofing or Starter-Course for Roofs
- Proudly Manufactured in the U.S.A. by Miller Shingle Company

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CWFK5QYC |
| Best Sellers Rank | #395,769 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Shingles & Shakes |
| Date First Available | February 25, 2024 |
| Item Weight | 52 pounds |
| Manufacturer | Miller Shingle |
| Number of Items | 250 |
| Package Dimensions | 21 x 19 x 16 inches |
| UPC | 810150201475 |

## Product Details

- **Brand:** Miller Shingle
- **Color:** Natural
- **Item Form:** Sheet
- **Material:** Wood
- **Shape:** Rectangular

## Images

![18" #4 Undercourse Cedar Kiln Dried Sidewall Shingle 1 Square Carton, Natural - Image 1](https://m.media-amazon.com/images/I/714we5XBTiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Surprisingly good quality
*by B***N on April 18, 2025*

These were way better quality than I expected. A couple had knots that made them almost unuseable, unless cut in half. For not being premium quality rebutted, and squared, they were actually fairly square. Probably not great shingles for a roof, but excellent shingles for an outbuilding sidewall. If you have a lot of corners you are trying to layer, they can be a little difficult to trim, due to the knots. So corner shingles should be chosen a little more carefully to avoid knots, or weird grain where trimming. I found it easiest to trim corners with a small trimming plane, or a small block plane. All in all they are beautiful shingles that will add a lot of character to your project.

### ⭐⭐⭐⭐⭐ Ouch! Seriously expensive.
*by A***R on May 9, 2025*

Good shingles, shipped right away - way, way over-priced. Go to your local hardware store.

### ⭐⭐⭐⭐⭐ Quality wood
*by C***K on March 20, 2025*

Delivered on time, quality wood, shingles for house siding (not roof shingles) are hard to find.

## Frequently Bought Together

- Miller Shingle 18" #4 Undercourse Cedar Kiln Dried Sidewall Shingle 1 Square Carton, Natural
- Miller Shingle 18 Inch Rebutted and Rejointed (R&R) Natural Groove Cedar Sidewall Shingles Primed 1 Square Carton
- Simpson Strong Tie Simpson S3SND1 3D Cedar & Redwood Siding Nails 1-1/4" 14 ga 304 1LB Stainless, Silver

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**Shop now:** [https://www.desertcart.co.uk/products/618265774-18-4-undercourse-cedar-kiln-dried-sidewall-shingle-1-square](https://www.desertcart.co.uk/products/618265774-18-4-undercourse-cedar-kiln-dried-sidewall-shingle-1-square)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-04*