Looking for the best high-temp ice & water underlayments to protect your roof?
Discover top-rated options that offer easy installation, durability, and unbeatable protection against leaks and extreme weather—so your roof stays secure all year round!
Roofs face tough challenges from ice, water, and heat. The right underlayment protects your home. We’ve found the best high-temp ice & water underlayments for you.
These products are easy to install and built to last. They keep your roof safe from leaks and weather damage.
Discover top brands and key features in our guide. Learn how to choose the perfect underlayment for your needs. Let’s explore and protect your roof together!
List of Top 8 High-Temp Ice & Water Underlayments
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FT Synthetics Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36″ x 67′) |
This roofing underlayment is perfect for homeowners and contractors who want a reliable, long-lasting solution for protecting roofs from water damage and extreme temperatures. It’s ideal for low-slope roofs and works great with materials like EPDM and TPO. |
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FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment, 41 mil, 36″ x 67′, High-Temp, Self-Adhering, Nail Sealable, UV Resistant, ASTM/CSA Certified, Lifetime Warranty |
Homeowners and contractors in high-heat areas needing strong, long-term roof protection. Perfect for sealing ice-damaged zones, UV resistance, and easy, secure installs with lifetime reliability. |
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HydroShield Self Adhering Ice and Water Shield HT Underlayment (1) |
HydroShield Self Adhering Ice and Water Shield HT Underlayment is perfect for homeowners and builders who need strong, reliable waterproofing. It works great for residential and commercial roofs, keeping them safe from water damage. |
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FT Synthetics Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36″x67′) Pallet of 30 |
This product is perfect for homeowners and roofing professionals in high-heat areas or regions with heavy snow and ice. It offers strong, lasting protection against leaks, UV damage, and extreme weather. |
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Grace Vycor Ice and Water Shield HT Self Adhering Underlayment-75 Feet (225 Square Feet) – Single Roll |
This Grace Vycor Ice and Water Shield HT is perfect for homeowners and roofers who need reliable protection for sloped roofs. It’s easy to use and lasts long, even in hot weather. |
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HydroShield Self Adhering Ice and Water Shield Underlayment (1.95 Square – Pallet of 30) |
This product is perfect for homeowners, roofers, and contractors needing reliable, easy-to-install protection for sloped roofs. It self-seals around nails, offers a slip-resistant surface, and handles extreme temperatures with strong durability. |
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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 want strong, reliable roof protection. It’s ideal for sloped roofs and works great under shingles, keeping your roof safe from water, ice, and heat. |
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Grace Self Adhering Ice and Water Shield Roof Underlayment (36in. x 75ft. – 35 Rolls) |
This roof underlayment is perfect for homeowners and contractors who want strong protection against harsh weather. It’s easy to apply and works well under most roof types. |
Detailed Reviews
Our guide cuts through the noise to bring you the top 8 high-temp ice and water underlayments tested and trusted by pros. Each pick balances durability, heat resistance, and waterproof strength, so you know your roof stays dry and protected. From budget-friendly picks to premium options with lifetime warranties, we’ve got the right fit for every roof type and climate. Stop guessing—find your perfect match and build a roof that stands up to the toughest weather.
1. FT Synthetics Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36″ x 67′)
FT Synthetics Platinum HT-B sticks to plywood or OSB decks with 100% butyl. It works with EPDM and TPO on low-slope roofs. Nail sealable design meets ASTM D1970 standards.
UV resistant for 180 days. ASTM certified with a Lifetime Warranty. Watertight laps seal tight. Holds up for 18+ months in storage.
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Perfect For:
This roofing underlayment is perfect for homeowners and contractors who want a reliable, long-lasting solution for protecting roofs from water damage and extreme temperatures. It’s ideal for low-slope roofs and works great with materials like EPDM and TPO.
Ready to Purchase?
2. FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment, 41 mil, 36″ x 67′, High-Temp, Self-Adhering, Nail Sealable, UV Resistant, ASTM/CSA Certified, Lifetime Warranty
Protect your roof with FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment. This heavy-duty shield is 41 mil thick for superior durability. It offers long-lasting roof deck protection.
This underlayment is certified for top performance. It’s easy to install and versatile.
Enjoy reliable seal and watertight laps. This underlayment is UV resistant and comes with a Limited Lifetime Warranty.
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Perfect For:
Homeowners and contractors in high-heat areas needing strong, long-term roof protection. Perfect for sealing ice-damaged zones, UV resistance, and easy, secure installs with lifetime reliability.
Ready to Purchase?
3. HydroShield Self Adhering Ice and Water Shield HT Underlayment (1)
HydroShield Self Adhering Ice and Water Shield HT Underlayment is a reliable waterproofing solution for roofs. It has a blue polyolefin film that resists skidding and sticks well.
This underlayment self-seals around nails and fasteners, keeping water out. It works under metal roofs like copper and zinc, and it’s easy to handle with its split-back release liner.
Roll size: 36 inches wide, 65 feet long. Covers 195 square feet. Weight: 50 pounds. Thickness: 40 millimeters.
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Perfect For:
HydroShield Self Adhering Ice and Water Shield HT Underlayment is perfect for homeowners and builders who need strong, reliable waterproofing. It works great for residential and commercial roofs, keeping them safe from water damage.
Ready to Purchase?
4. FT Synthetics Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36″x67′) Pallet of 30
FT Synthetics Platinum HT-B is a top-quality roofing underlayment. It offers superior protection for your roof. This product is easy to install and built to last.
This self-adhering underlayment is 41 mil thick and 100% butyl. It provides a strong barrier against ice, water, and high temperatures. The nail sealable feature ensures a secure fit.
With UV resistance and ASTM certification, this product is reliable and long-lasting. The lifetime warranty gives you peace of mind. FT Synthetics Platinum HT-B is a smart choice for roofing projects.
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Perfect For:
This product is perfect for homeowners and roofing professionals in high-heat areas or regions with heavy snow and ice. It offers strong, lasting protection against leaks, UV damage, and extreme weather.
Ready to Purchase?
5. Grace Vycor Ice and Water Shield HT Self Adhering Underlayment-75 Feet (225 Square Feet) – Single Roll
Grace Vycor Ice and Water Shield HT is a high-temperature resistant, self-adhering underlayment with strong adhesion. It’s made of rubberized asphalt and polyethylene film, offering a slip-resistant surface for roof protection.
This underlayment seals tightly around nails and fasteners. It works on all sloped roofs to block water leaks. The material resists UV rays for up to 120 days of sun exposure.
CertainTeed’s SureStart Warranty covers this product. Roll width is 36 inches, with lengths of 66.6 feet or 75 feet. Choose the size that fits your roofing needs.
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Perfect For:
This Grace Vycor Ice and Water Shield HT is perfect for homeowners and roofers who need reliable protection for sloped roofs. It’s easy to use and lasts long, even in hot weather.
Ready to Purchase?
6. HydroShield Self Adhering Ice and Water Shield Underlayment (1.95 Square – Pallet of 30)
HydroShield is a self-adhering underlayment for roofs. It seals around nails to block water leaks and has a sand-coated surface for safe walking. It works on roofs with a slope of 2:12 or steeper.
The split-back liner makes it easy to apply fast. It resists UV rays for up to 60 days before shingles go on. Rolls come in 33-foot or 65-foot lengths for quick coverage.
Built tough, it handles temps from -40°F to 200°F. It’s Class A fire-rated and approved by Florida and Miami-Dade codes. Roll thickness is 57mm, and each pallet holds 30 large rolls.
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Perfect For:
This product is perfect for homeowners, roofers, and contractors needing reliable, easy-to-install protection for sloped roofs. It self-seals around nails, offers a slip-resistant surface, and handles extreme temperatures with strong durability.
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 Roof Underlayment is a strong, self-sealing solution for your roof. It’s easy to apply and bonds tightly to the roof deck, protecting against leaks.
This 40-mil membrane resists punctures, heat, and UV damage. It works well under shingles and on sloped roofs. Perfect for ice dams and heavy rain.
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Perfect For:
POLYGUARD Deckguard HT Roof Underlayment is perfect for homeowners and contractors who want strong, reliable roof protection. It’s ideal for sloped roofs and works great under shingles, keeping your roof safe from water, ice, and heat.
Ready to Purchase?
8. Grace Self Adhering Ice and Water Shield Roof Underlayment (36in. x 75ft. – 35 Rolls)
Grace Self Adhering Ice and Water Shield is a watertight seal that guards roofs against harsh weather. It sticks strongly to the roof deck and comes with the SureStart Warranty.
This underlayment works under most roof coverings, like shingles and metal roofs. It blocks wind-driven rain and ice dams. The Ripcord split release makes it easy to install.
It has a slip-resistant surface for safety. It’s reroofable and won’t stick to roof coverings. At 25-mil thickness, it offers inexpensive protection that lasts.
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Perfect For:
This roof underlayment is perfect for homeowners and contractors who want strong protection against harsh weather. It’s easy to apply and works well under most roof types.
Ready to Purchase?
Buying Guide
Roofs face ice, water, and heat. The right underlayment keeps your home safe.
- Material: High-temp underlayments use 100% butyl or rubberized asphalt. These materials stick well and resist extreme heat.
- UV Resistance: UV resistance matters if underlayment is exposed before shingles. Look for 120+ days of sun protection.
- Thickness: Thicker is better for durability. Choose 40-41 mil for top protection.
- Certifications: ASTM or CSA certified products meet strict standards. Certifications ensure quality and performance.
- Warranty: A lifetime warranty covers long-term issues. Always check warranty terms before buying.
- Ease of Installation: Self-adhering rolls save time and labor. Split-back liners make handling easy.
- Temperature Range: High-temp underlayments work up to 260°F. They also handle freezing temps for ice dams.
- Fire Rating: Class A fire-rated underlayments offer top fire safety. Required in some areas.
- Coverage: Check roll size and coverage area. Larger rolls cut labor costs and time.
- Compatibility: Make sure underlayment works with your roof type. Works with shingles, metal, TPO, EPDM.