Looking for the best ASTM/CSA certified roof underlayments? We’ve gathered 8 top-rated options to help you protect your home with quality and safety in mind.
Choosing the right roof underlayment is key to protecting your home. ASTM/CSA certified options ensure top quality and safety. These products guard against water, UV rays, and harsh weather.
Discover the best underlayments that meet high standards. Learn how they keep roofs strong and leak-free for years. Find the perfect fit for your needs and budget.
List of Top 8 ASTM/CSA Certified Roof Underlayments
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SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (1) |
This SIPA 100 GSM Synthetic Waterproof Roof Underlayment is perfect for homeowners and contractors who need reliable, long-lasting protection for their roofs. It’s ideal for both commercial and residential projects, offering strong water resistance and UV protection for up to 60 days. |
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SIPA Synthetic Waterproof Roof Underlayment 48” x 250′ (72) |
This product is perfect for roofing professionals and DIY homeowners needing a strong, waterproof underlayment for sloped roofs. It’s ideal for use under asphalt shingles or metal cladding, offering UV protection, no buckling, and long-lasting durability. |
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SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (10) |
This SIPA 100 GSM Synthetic Waterproof Roof Underlayment is perfect for homeowners and builders looking for a tough, reliable layer under their asphalt shingles or metal roofs. It offers superior protection against water and the elements, ensuring your roof stays strong and crack-free for years to come. |
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ZIP System Peel and Stick Underlayment | Waterproof Ice and Water Barrier Roof Underlayment (High Temp) |
This ZIP System Peel and Stick Underlayment is perfect for homeowners and builders looking for top-notch protection against leaks and water damage. It’s ideal for areas prone to ice dams and wind-driven rain, ensuring your roof stays waterproof and secure. |
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ArmorLay 25 Synthetic Roof Underlayment 4′ x 250′ |
ArmorLay 25 is perfect for homeowners and builders who want a reliable, long-lasting roof underlayment. It’s easy to use and works great on steep slopes, making it ideal for any roofing project. |
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Roof Underlayment Pro-Grade |
Roof Underlayment Pro-Grade is perfect for homeowners and contractors who want reliable protection for their roofs. It’s easy to use and built to last, making it ideal for any roofing project. |
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POLYGUARD Deckguard HT Roof Underlayment. 3’x75′ (225 Square Feet). High Temperature Range of 260°F (127°C) or Less. Self Sealing, Ice, and Water Shield for Roof |
POLYGUARD Deckguard HT Roof Underlayment is perfect for homeowners and contractors who need a reliable, high-temperature roof underlayment. It’s ideal for sloped roofs and works great under shingles. |
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Henry Wip Grip Self Adhered Roof Underlayment 3′ X 65′, Gray, WP050 |
Professional roofers and DIY homeowners who need reliable roof protection will love this underlayment. It offers superior slip-resistance, seals around nails, and long-term waterproofing for safe, durable results. The split-release film makes installation quick and hassle-free. |
Detailed Reviews
Discover the top 8 ASTM/CSA Certified Roof Underlayments, carefully selected for quality, durability, and value. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best protection for your roof. Whether you need waterproofing, UV resistance, or ease of installation, this guide has you covered. Find the perfect underlayment to keep your roof safe, dry, and long-lasting.
1. SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (1)
Protect your roof with SIPA 100 GSM Synthetic Waterproof Roof Underlayment. This tough material shields your roof deck from water.
It’s waterproof. It meets high standards. It resists UV rays.
This underlayment works on any roof. Use it with shingles or metal. You’ll need a nailer and caps.
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Perfect For:
This SIPA 100 GSM Synthetic Waterproof Roof Underlayment is perfect for homeowners and contractors who need reliable, long-lasting protection for their roofs. It’s ideal for both commercial and residential projects, offering strong water resistance and UV protection for up to 60 days.
Ready to Purchase?
2. SIPA Synthetic Waterproof Roof Underlayment 48” x 250′ (72)
SIPA Synthetic Waterproof Roof Underlayment is strong and reliable. Each 10-square roll covers 1,000 square feet. It’s perfect for sloped roofs.
This underlayment won’t buckle, warp, or crack. It’s water-resistant and built to last. Ideal for both homes and businesses.
It meets top industry standards. Tested for 60 days of UV exposure. Use it under shingles or metal cladding.
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Perfect For:
This product is perfect for roofing professionals and DIY homeowners needing a strong, waterproof underlayment for sloped roofs. It’s ideal for use under asphalt shingles or metal cladding, offering UV protection, no buckling, and long-lasting durability.
Ready to Purchase?
3. SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (10)
This 100GSM synthetic underlayment covers 1,000 sq ft per roll. It meets ASTM D4869, ASTM D226, and is TDI Listed CCRR #AC207 for reliability.
Built for 60 days of UV exposure, it resists damage from sun and weather. Ideal for sloped residential and commercial roofs under asphalt shingles or metal cladding.
Won’t buckle, warp, or crack in tough conditions. Waterproof for lasting roof protection. Lightweight and easy to install for fast, durable results.
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Perfect For:
This SIPA 100 GSM Synthetic Waterproof Roof Underlayment is perfect for homeowners and builders looking for a tough, reliable layer under their asphalt shingles or metal roofs. It offers superior protection against water and the elements, ensuring your roof stays strong and crack-free for years to come.
Ready to Purchase?
4. ZIP System Peel and Stick Underlayment | Waterproof Ice and Water Barrier Roof Underlayment (High Temp)
ZIP System Peel and Stick Underlayment is a waterproof solution for your roof. It protects against leaks and water damage.
This high-performance product is made of rubberized asphalt. It seals around nails and has a slip-resistant surface. It’s easy to apply and meets code requirements.
With a maximum service temperature of 260 degrees, it’s ideal for high-temp areas. It’s perfect for eaves, valleys, or entire roof applications. Protects your home from ice dams and wind-driven rain.
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Perfect For:
This ZIP System Peel and Stick Underlayment is perfect for homeowners and builders looking for top-notch protection against leaks and water damage. It’s ideal for areas prone to ice dams and wind-driven rain, ensuring your roof stays waterproof and secure.
Ready to Purchase?
5. ArmorLay 25 Synthetic Roof Underlayment 4′ x 250′
ArmorLay 25 is a strong and reliable roof underlayment. It comes in a 4′ x 250′ roll, covering 1,000 square feet. This product is built to last and protect your roof.
It meets high standards for performance. The material is UV resistant for 60 days. It also has a slip-resistant surface, making it safe to walk on.
ArmorLay 25 is water resistant and won’t buckle or crack. It’s a great choice for steep slope roofs. This product will keep your roof safe and dry.
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Perfect For:
ArmorLay 25 is perfect for homeowners and builders who want a reliable, long-lasting roof underlayment. It’s easy to use and works great on steep slopes, making it ideal for any roofing project.
Ready to Purchase?
6. Roof Underlayment Pro-Grade
Roof Underlayment Pro-Grade is a top-quality product. It offers superior protection for your roof. This underlayment is easy to install.
The UDL30 model is highly durable. It can withstand harsh weather. Your roof stays safe and dry.
This product is reliable and long-lasting. It’s a smart choice for any roofing project.
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Perfect For:
Roof Underlayment Pro-Grade is perfect for homeowners and contractors who want reliable protection for their roofs. It’s easy to use and built to last, making it ideal for any roofing project.
Ready to Purchase?
7. POLYGUARD Deckguard HT Roof Underlayment. 3’x75′ (225 Square Feet). High Temperature Range of 260°F (127°C) or Less. Self Sealing, Ice, and Water Shield for Roof
POLYGUARD Deckguard HT is a strong roof underlayment. It protects roofs from water and heat. This product is easy to apply.
It has a special film that makes it simple to use. The asphalt compound bonds well with the roof deck. This ensures a secure and lasting hold.
The 40-mil membrane resists punctures and heat. It can handle temperatures up to 260°F. This underlayment is ideal for sloped roofs.
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Perfect For:
POLYGUARD Deckguard HT Roof Underlayment is perfect for homeowners and contractors who need a reliable, high-temperature roof underlayment. It’s ideal for sloped roofs and works great under shingles.
Ready to Purchase?
8. Henry Wip Grip Self Adhered Roof Underlayment 3′ X 65′, Gray, WP050
Henry Wip Grip is a self-adhered roof underlayment with a gray finish. It offers superior slip-resistance on wet or dry surfaces for safer installation. The underlayment seals around nails and screws to block water leaks.
It adds strength in vulnerable areas like valleys and around roof penetrations. A split-release film makes it easier and faster to apply. It resists cracking, drying, and rotting for long-term protection.
This underlayment works as a backup layer for your roof. It ensures watertight performance in critical zones for lasting durability.
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Perfect For:
Professional roofers and DIY homeowners who need reliable roof protection will love this underlayment. It offers superior slip-resistance, seals around nails, and long-term waterproofing for safe, durable results. The split-release film makes installation quick and hassle-free.
Ready to Purchase?
Buying Guide
Choosing the right roof underlayment is key to protecting your home. ASTM/CSA certified options ensure top quality and safety. These products guard against water, UV rays, and harsh weather.
Discover the best underlayments that meet high standards. Learn how they keep roofs strong and leak-free for years. Find the perfect fit for your needs and budget.
Factors to Consider When Buying Roof Underlayment:
– Material Type: Synthetic underlayments are lightweight and durable, while asphalt-based options offer strong adhesion. Choose based on your roof type and climate.
– Water Resistance: Look for waterproof or water-resistant products to protect against leaks and moisture damage.
– UV Resistance: Ensure the underlayment can withstand UV rays for at least 60 days to prevent sun damage.
– Temperature Range: For high-temp areas, pick underlayments rated for 260°F or higher to avoid melting or cracking.
– Ease of Installation: Self-adhered or peel-and-stick options are easy to apply, saving time and effort.
– Slip Resistance: A slip-resistant surface ensures safer installation, especially on steep roofs.
– Coverage Area: Check the roll size to ensure it covers your roof area efficiently, reducing waste.
– Durability: Choose products that won’t buckle, warp, or crack under tough conditions for long-lasting protection.
– Certifications: Look for ASTM/CSA certifications to ensure the product meets industry standards.
– Budget: Balance cost and quality to find an underlayment that fits your budget without compromising performance.