Types of Roof Underlayment Available in East Granby, Connecticut for Residential Roofing Projects

Roof underlayment may not be visible once a roof is complete, but it plays a critical role in protecting a home from moisture, wind, and long-term damage. For homeowners and contractors sourcing materials from a roof underlayment supplier in East Granby, CT, understanding the different types of underlayment available helps ensure the roofing system performs as intended.

Below is a breakdown of the most common roof underlayment options used in residential roofing projects throughout East Granby and nearby areas—and how local suppliers like Valley Building Supply support proper material selection.

Roof underlayment serves as a protective barrier between the roof deck and the finished roofing material. It provides secondary protection against water infiltration, especially during severe weather or if shingles become damaged.

In Connecticut’s climate—where snow, ice, rain, and freeze-thaw cycles are common—choosing the right underlayment is essential for long-term roof performance.

Asphalt-saturated felt is one of the most traditional underlayment options used in residential roofing.

Key characteristics include:

• Cost-effective material option
• Commonly available in 15-pound and 30-pound weights
• Suitable for standard asphalt shingle installations

While felt underlayment has been used for decades, it is less resistant to moisture and tearing compared to newer synthetic alternatives. A knowledgeable roof underlayment supplier in East Granby, CT, such as Valley Building Supply, can help determine when felt is appropriate and when an upgrade may be beneficial.

Synthetic underlayment has become increasingly popular for residential roofing projects due to its durability and performance advantages.

Benefits of synthetic underlayment include:

• Improved tear resistance
• Better moisture protection
• Lightweight and easier installation
• Enhanced longevity compared to felt

Many contractors prefer synthetic underlayment for its reliability, especially in Connecticut’s unpredictable weather conditions.

Ice and water shield is a self-adhering underlayment designed to provide maximum protection in vulnerable areas of the roof.

It is commonly installed:

• Along the roof eaves
• In valleys
• Around chimneys, skylights, and penetrations

Due to East Granby’s winter weather and ice dam risks, ice and water shield is often required by local building codes in certain areas. Valley Building Supply helps ensure homeowners and contractors have access to the correct products for code-compliant installations.

Selecting the right roof underlayment depends on several factors, including:

• Roofing material type
• Roof slope and design
• Local building codes
• Weather exposure and climate conditions

Working with a trusted roof underlayment supplier in East Granby, CT allows homeowners and contractors to choose materials that align with both manufacturer requirements and regional conditions.

Why Local Suppliers Matter for Roof Underlayment

Roof underlayment must be compatible with the entire roofing and siding system to perform correctly. Local suppliers bring valuable insight into which products work best for Connecticut homes.

Suppliers like Valley Building Supply offer:

• Guidance on underlayment compatibility
• Access to multiple underlayment types and brands
• Support for residential roofing contractors
• Reliable inventory and fast availability

This local expertise helps ensure roofing projects are built to last—not just installed quickly.

Final Thoughts

Roof underlayment is a foundational component of any residential roofing system. From traditional felt to advanced synthetic materials and ice and water protection, choosing the right underlayment improves durability, moisture resistance, and long-term performance.

For homeowners and contractors seeking a reliable roof underlayment supplier in East Granby, CT, working with a trusted local provider like Valley Building Supply ensures access to quality materials, expert guidance, and dependable support throughout the roofing process.