Everything You Should Know About Roof Underlayment

• 1- Roof Underlayment Overview
• 2- Types of Roof Underlayment
• 3- Why You Need Roof Underlayment
• 4- How to Choose the Right Roof Underlayment
• 5- Common Mistakes When Installing Roof Underlayment

1- Roof Underlayment Overview

Roof underlayment plays a critical role in the protection and longevity of your roof. It acts as an additional layer between the roof decking and the roofing material. Think of it as an unsung hero—ensuring that the main roofing materials (shingles, tiles, etc.) are supported, dry, and free from damage caused by external weather factors.

For Canadian homeowners, choosing the correct roof underlayment is especially important due to the country's diverse and harsh climate. Whether you live in snow-heavy areas, regions prone to heavy rain, or places where temperatures fluctuate drastically, roof underlayment can make a significant difference in the durability of your roof.

2- Types of Roof Underlayment

There are several types of roof underlayment materials, and selecting the right one depends on your roofing needs and the region in which you live. The most common types are:

Custom Contracting Burlington Roofing & Eavestrough Repair Burlington / eavestrough burlington

BurlingtonRegional Municipality of HaltonOntario

687 Waterloo St, Burlington, ON L7R 2S9, Canada

2.1 Asphalt-Saturated Felt

Asphalt-saturated felt is the traditional choice for roof underlayment. It is made of felt material that is saturated with asphalt, offering moderate protection against moisture. This type is relatively affordable but can be less durable in extreme weather conditions.

SGM Construction Roofing / sgmconstruction.ca

TorontoOntario

287 Epsom Downs Dr, North York, ON M3M 1T5, Canada

2.2 Synthetic Underlayment

Synthetic underlayment has gained popularity in recent years due to its superior performance and durability. Unlike asphalt felt, it is lighter, more water-resistant, and resistant to tearing. This is an ideal choice for areas with heavy rainfall or extreme snow conditions.

2.3 Rubberized Asphalt

Rubberized asphalt underlayment offers the best protection for extreme weather. This type is self-adhesive, providing an extra seal against moisture, which is perfect for areas that experience ice dams and water infiltration.

3- Why You Need Roof Underlayment

Roof underlayment serves as a protective barrier that helps your roof last longer and function better. Here are the main reasons you need roof underlayment:

3.1 Moisture Protection

Underlayment acts as a moisture barrier, preventing rainwater and snowmelt from reaching your roofing deck. In Canada, where weather conditions can lead to prolonged exposure to water, underlayment is crucial to maintain the structural integrity of your roof.

3.2 Thermal Protection

Roof underlayment also helps to regulate the temperature in your attic, keeping the space warmer in winter and cooler in summer. This can lead to reduced energy costs, especially during Canada’s harsh winters.

3.3 Wind and Ice Protection

The strong winds and ice buildup in Canada can lead to leaks and roof damage. Underlayment helps to prevent wind-driven rain and ice from seeping under the shingles, offering protection against ice dams and windstorms.

4- How to Choose the Right Roof Underlayment

Choosing the right roof underlayment involves considering various factors such as the local climate, budget, and roofing material. Here's a guide to help you make the best decision:

4.1 Climate Considerations

For colder climates, rubberized asphalt underlayment is often the best choice, as it provides a strong defense against ice dams. In milder climates, synthetic underlayment may be more than sufficient.

4.2 Roof Material Compatibility

Different roofing materials may require different types of underlayment. For example, metal roofs often require a breathable synthetic underlayment, while asphalt shingles may work well with either asphalt-saturated felt or synthetic underlayment.

4.3 Budget

While synthetic underlayment offers superior performance, it can be more expensive. If you're working with a tight budget, asphalt-saturated felt might be a more cost-effective choice. However, investing in a higher-quality underlayment could save you money in the long run by extending the lifespan of your roof.

5- Common Mistakes When Installing Roof Underlayment

Installing roof underlayment is a crucial step in the roofing process, and it's important to avoid these common mistakes:

5.1 Incorrect Installation

Improper installation of roof underlayment can lead to water infiltration and reduced effectiveness. Always ensure that the underlayment is installed smoothly and correctly, overlapping the edges to create a seal.

5.2 Skipping Underlayment in Some Areas

Some homeowners try to cut costs by skipping the underlayment in areas they believe are less exposed to the elements. This can lead to severe roof damage in the long run. It's always best to cover the entire roof with underlayment to ensure complete protection.

5.3 Choosing the Wrong Type of Underlayment

Not all underlayments are created equal. Choosing the wrong type can lead to issues with moisture, thermal protection, and durability. Be sure to select an underlayment that suits both your climate and the roofing material you're using.

If you're unsure about the best choice for your roof, consider consulting with experts at Pickering Roofing to get the most appropriate products and services tailored to your needs.