Wall & Ceiling Cladding Calculator

How Much Cladding Material Do I Need?

To estimate cladding material, start by measuring the total surface area of the walls or ceilings you plan to cover. Multiply the height by the width to get the square footage, then add a waste allowance — typically 10–15% for straightforward layouts and up to 20% for complex installations with many corners, windows, or angles.

Thermo Ayous Cladding bundles cover approximately 15 square feet each, while Natural Elegance Composite Wood Cladding cover approximately 21 square feet per bundle.

Trims, corner pieces, and openings around doors or windows all contribute to material waste. Always calculate based on the full surface area and add your waste factor before ordering.

Thermowood vs Composite Cladding Cost

The total project cost depends on several factors: the material selected, project size, waste percentage, whether you choose standard or custom configurations, and shipping logistics. Thermowood Ayous offers a natural, warm wood aesthetic with excellent dimensional stability, while composite slats provide a low-maintenance engineered solution.

For projects requiring specific board lengths, iLumber offers custom Thermo Wood configurations directly on the Thermally Modified Ayous page. Standard random-length bundles are the most economical option for most residential and commercial cladding projects.

How Much Extra Material Should I Order?

Most cladding projects require 10–15% extra material for cuts and installation waste. Complex layouts with many corners, windows, or transitions may need up to 20% additional material. Professional installers consistently recommend ordering extra to avoid project delays.

We recommend ordering all required material at once. Material appearance can vary slightly between production batches, so ordering from a single lot ensures the most consistent look across your project.