What Is a Rainscreen for Siding?

A rainscreen is a crucial feature for residential and commercial exterior siding, especially for properties in Calgary, AB. In this climate, where temperature fluctuations, snow, and heavy rains are common, a rainscreen offers vital protection. Essentially, a rainscreen is an exterior system installed behind siding to manage moisture and promote drying, extending the life of your investment in Hardie Board, wood, or any other exterior siding option.

Why Do Calgary Homes Need a Rainscreen?

Calgary experiences freeze-thaw cycles, wind-driven rain, and long winters. These conditions can allow moisture to seep behind exterior siding, leading to potential rot, mold, or insulation issues. A rainscreen provides a drainage and ventilation gap between the siding and the main wall. This layer allows water to escape and air to circulate, drying out any residual moisture and protecting the structural integrity of your home or business.

How a Rainscreen System Works

A typical rainscreen system includes an air space, moisture barrier, and drainage path, installed beneath your siding material. Here’s how it functions:

• Exterior siding, such as Hardie Board, is installed over a ventilation gap.

• A weather-resistant barrier (WRB) or membrane is attached directly to the sheathing.

• Furring strips or other spacers create a cavity for air movement, preventing moisture buildup.

• Any rain that penetrates the siding drains down and out, and the system dries quickly with the area’s frequently changing conditions.

This layered approach allows for both water management and vapour release, minimizing the odds of costly repairs due to trapped moisture under the siding.

Benefits of a Rainscreen on Hardie Board and Other Siding

When installing new Calgary siding, a rainscreen significantly boosts the performance and longevity of premium materials like Hardie Board. Some key benefits include:

• Preventing wood rot, warping, or premature deterioration of siding and framing

• Enhancing energy efficiency by keeping insulation drier

• Improving indoor air quality by reducing the risk of mold development

• Helping home and building exteriors maintain their appearance and performance for years

On Calgary homes, rainscreens are now a recommended best practice for both renovations and new construction.

Is a Rainscreen Right for Your Siding Project?

If you’re investing in durable materials such as Hardie Board, a rainscreen is a wise choice for protecting that investment. Modern building codes increasingly require rainscreens on multi-family and commercial projects, and many local builders recommend them for single-family homes as well. For exterior renovations, especially when upgrading to fiber cement or engineered wood, consider a rainscreen necessary, not optional. S.I.S. Exterior Renovations frequently installs rainscreen systems to maximize the performance and longevity of siding installations across Calgary.

Professional Installation Matters

Proper rainscreen installation requires expertise in both material selection and local climate performance. Experienced contractors like S.I.S. Exterior Renovations ensure that all elements—from the waterproof membrane to the siding itself—are specified and installed correctly. The result is a home or building that stands up to challenging conditions season after season.

Talk to S.I.S. Exterior Renovations About Rainscreen Solutions

If you’re updating your siding or starting a new construction project, consider the peace of mind that comes with a properly designed rainscreen system. Contact S.I.S. Exterior Renovations in Calgary, AB for tailored recommendations and professional installation of Hardie Board, exterior siding, and rainscreen systems to protect your investment year-round. Give us a call at (403) 640-1334 or fill out our online form to get started.