Best FT Synthetics Roofing Underlayment

Looking for the best FT Synthetics roofing underlayment? Discover durable, eco-friendly protection with slip-resistant surfaces, 180-day UV defense, and hassle-free installations designed for long-lasting reliability.

FT Synthetics sets the gold standard in roofing underlayment. Their products blend strength, innovation, and eco-friendliness for any project.

Users rave about smooth installations and unmatched protection. From slip-resistant surfaces to 180-day UV shields, these underlayments tackle tough jobs with ease.

100% recyclable materials. Up to 180 days of UV defense. Lifetime warranties backed by trust. Discover the FT Synthetics edge—your roof’s ultimate defense starts here.

List of Top 10 FT Synthetics Roofing Underlayment

Image Title Best For Price
Grip-Rite SL154250LWE 48 in. x 250 ft. (1000 sq. ft.) Synthetic Roofing Underlayment Grip-Rite SL154250LWE 48 in. x 250 ft. (1000 sq. ft.) Synthetic Roofing Underlayment

This synthetic roofing underlayment is perfect for homeowners and contractors who want a strong, lightweight, and energy-efficient solution. It’s ideal for roofing projects needing long-lasting protection and easy installation.

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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 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 Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

This product is perfect for roofers and DIYers who want a lightweight, eco-friendly underlayment with zero fuss. It’s built for safety with a slip-resistant grip and long-lasting power, featuring 91-day UV protection and a 20-year warranty.

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SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250' (1) SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (1)

Roofing contractors and homeowners seeking reliable waterproof protection. This underlayment offers UV-resistant coverage for up to 60 days, suits asphalt shingles or metal roofs, and meets strict standards for durability.

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FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48 FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48″ x 250′)

This product is perfect for roofing contractors and DIY builders who need a durable, slip-resistant, and eco-friendly underlayment. It’s ideal for steep or flat roofs in sunny or cold climates, offering UV resistance, easy installation, and 100% recyclability.

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FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment, 41 mil, 36 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

FT Synthetics Platinum HT-SA is perfect for homeowners and contractors who want top-notch roof protection. It’s ideal for extreme weather and long-lasting durability.

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FT Synthetics Pro 20 Synthetic Underlayment (Single Roll) FT Synthetics Pro 20 Synthetic Underlayment (Single Roll)

FT Synthetics Pro 20 Synthetic Underlayment is perfect for roofing contractors and DIY homeowners seeking a lightweight, eco-friendly, and cost-effective solution. Its wrinkle-free design and low-temp flexibility make installation easy, while 90-day UV resistance and a 20-year warranty ensure long-term durability. Approved for commercial and residential use, it’s ideal for slopes 2:12+ with asphalt shingles, metal, or cedar shakes.

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FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

FT Synthetics Silver Synthetic Roofing Underlayment is perfect for homeowners and contractors who want a lightweight, eco-friendly, and durable roofing solution. It’s ideal for those seeking easy installation and long-term reliability.

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FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48 FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48″ x 250′) (36)

FT Synthetics Platinum Synthetic Roofing Underlayment is perfect for homeowners and contractors who want strong, safe, and eco-friendly roofing protection. It’s ideal for large projects needing durable, slip-resistant, and UV-resistant materials.

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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 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 in harsh weather areas needing strong, lasting roof protection. Contractors and builders will love its ASTM certification, UV resistance, and lifetime warranty for reliable, hassle-free installations.

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Detailed Reviews

Discover the top FT Synthetics Roofing Underlayment picks, chosen for durability, ease, and value. Each product is expert-reviewed to meet your roofing needs. Find the perfect match for long-lasting protection and peace of mind.

1. Grip-Rite SL154250LWE 48 in. x 250 ft. (1000 sq. ft.) Synthetic Roofing Underlayment

Grip-Rite SL154250LWE 48 in. x 250 ft. (1000 sq. ft.) Synthetic Roofing Underlayment

Grip-Rite Synthetic Roofing Underlayment is lighter, stronger, and more energy efficient than felt. It rolls out flat and holds a chalk line for easy, precise installation. The 10-square roll covers 1,000 sq ft, cutting labor time and material waste.

Made from tough woven polypropylene, it resists tearing and wind blowoff. UV treated for 180 days of durability, it stays strong under sun exposure. Its high-tensile design ensures reliable performance in harsh weather.

This underlayment offers long-lasting water shedding protection and a durable temporary roof cover. It’s built for efficiency, strength, and ease in any roofing project.

Pros Cons
  • Lighter, stronger, and more energy efficient than felt.
  • Saves labor and reduces waste.
  • Tough woven polypropylene resists tearing.
  • UV treated for 180 days of protection.
  • Rolls out flat and holds a chalk line.
  • Not for heavy-duty or industrial use.
  • Limited UV protection to 180 days only.
  • May need extra care in extreme weather.

Perfect For:

This synthetic roofing underlayment is perfect for homeowners and contractors who want a strong, lightweight, and energy-efficient solution. It’s ideal for roofing projects needing long-lasting protection and easy installation.

Ready to Purchase?

2. 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 Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36

This underlayment uses 100% butyl to stick to wood decks. It works with EPDM, TPO, and low-slope roofs. Nail sealable meets ASTM D1970 for leak-proof sealing.

Watertight laps and 180-day UV resistance stop leaks. Split release liner, long shelf life, and Lifetime Warranty ensure easy use and lasting trust.

Pros Cons
  • 100% Butyl bonds strongly to plywood or OSB roof decks.
  • Nail sealable meets ASTM D1970 standards for reliable sealing.
  • UV resistant for 180 days with a lifetime warranty.
  • Watertight laps ensure maximum protection against leaks.
  • High cost may be a barrier for some buyers.
  • Heavy weight could make installation more challenging.
  • Limited color options available for this product.

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?

3. FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

FT Synthetics Silver Roofing Underlayment is a lightweight, eco-friendly solution for your roofing needs. This 42″ × 286′ roll covers a large area, making installation faster and easier. It’s made from 100% recyclable polyolefin, so it’s a sustainable choice without compromising on quality.

With its slip-resistant surface, this underlayment provides safe footing during installation, even in wet or slippery conditions. The 10 mil synthetic material is more durable than traditional felt, and it’s backed by a 20-year warranty for long-lasting performance.

Pros Cons
  • Lightweight 100% recyclable material covers 10 squares with fewer seams.
  • Slip-resistant surface ensures safe footing in wet or dry conditions.
  • 10 mil thickness outlasts traditional felt with reduced tears and wrinkles.
  • 91-day UV resistance withstands prolonged sun exposure before installation.
  • 20-year warranty guarantees long-term durability and performance confidence.
  • Limited UV protection (91 days) may require quick installation.
  • Recycling depends on local facilities, which may not accept polyolefin.

Perfect For:

This product is perfect for roofers and DIYers who want a lightweight, eco-friendly underlayment with zero fuss. It’s built for safety with a slip-resistant grip and long-lasting power, featuring 91-day UV protection and a 20-year warranty.

Ready to Purchase?

4. SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250′ (1)

SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250' (1)

SIPA 100 GSM Synthetic Waterproof Roof Underlayment is a reliable roofing solution. It covers 1,000 square feet with ease.

This synthetic membrane offers strong water resistance. It protects roof decking during installation. It meets top standards for performance.

Use it for commercial or residential roofs. It works with asphalt shingles and metal roofs. Install with nails or staples for a secure fit.

Pros Cons
  • Covers 1,000 sq ft with 100GSM strength for large roof projects
  • Strong waterproof membrane shields roof decking from rain and moisture
  • Meets ASTM D4869/D226 standards and is TDI/FBC approved for reliability
  • Withstands UV exposure up to 60 days for flexible installation timing
  • Works for commercial/residential roofs and pairs with asphalt shingles or metal systems
  • Not Natural Material
  • UV Protection Only Up to 60 Days
  • Requires Specialized Tools

Perfect For:

Roofing contractors and homeowners seeking reliable waterproof protection. This underlayment offers UV-resistant coverage for up to 60 days, suits asphalt shingles or metal roofs, and meets strict standards for durability.

Ready to Purchase?

5. FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48″ x 250′)

FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48

FT Synthetics Platinum is a 20 mil synthetic roofing underlayment with GRIPSPOT slip-resistant technology. It’s built from 100% recyclable polyolefin for durability and eco-friendliness, plus a lifetime warranty for peace of mind.

This underlayment resists UV rays, stays flexible in cold weather, and installs smoothly on slopes 2:12 and steeper. It covers 10 squares per roll (48″ x 250′), weighs 35 lbs, and stays wrinkle-free for fast, secure use.

Pros Cons
  • GRIPSPOT tech keeps you safe with superior slip resistance.
  • 100% Recyclable and waterproof for eco-friendly roofing.
  • Wrinkle-free and flexible for easy, fast installation.
  • Lifetime warranty ensures long-lasting, reliable protection.
  • Heavier weight complicates handling and installation.
  • Limited recycling access may hinder disposal.
  • Slip-resistant grip could wear over time.

Perfect For:

This product is perfect for roofing contractors and DIY builders who need a durable, slip-resistant, and eco-friendly underlayment. It’s ideal for steep or flat roofs in sunny or cold climates, offering UV resistance, easy installation, and 100% recyclability.

Ready to Purchase?

6. 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

FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment, 41 mil, 36

FT Synthetics Platinum HT-SA is a heavy-duty roofing underlayment designed for superior protection. It’s 41 mil thick and high-temp resistant, ensuring long-lasting durability.

Certified and approved, it meets ASTM and CSA standards. It’s also TDI, RCABC RoofStar, and Florida Building Code approved. This ensures reliable performance in all conditions.

Easy to install, it features a split release silicone liner. It’s UV resistant for up to 180 days and comes with a Limited Lifetime Warranty. Perfect for watertight, leak-free roofs.

Pros Cons
  • 41 mil thick for superior durability and roof protection.
  • ASTM/CSA Certified with top industry approvals.
  • Watertight seal via self-adhering butyl adhesive.
  • Split release liner for quick, hassle-free installation.
  • UV resistant up to 180 days with lifetime warranty.
  • High cost may be a concern for budget-conscious buyers.
  • Heavy weight could make installation more challenging.
  • Limited flexibility in colder temperatures during application.

Perfect For:

FT Synthetics Platinum HT-SA is perfect for homeowners and contractors who want top-notch roof protection. It’s ideal for extreme weather and long-lasting durability.

Ready to Purchase?

7. FT Synthetics Pro 20 Synthetic Underlayment (Single Roll)

FT Synthetics Pro 20 Synthetic Underlayment (Single Roll)

FT Synthetics Pro 20 is a 100% recyclable synthetic underlayment. It’s pliable, eco-friendly, and replaces traditional 15 lb. felt.

It resists UV rays for 90 days. Approved for residential and commercial use, it works on roof slopes 2:12 and higher. Lightweight and wrinkle-free, it installs easily in low temperatures.

20-year limited warranty ensures long-term reliability. Each roll covers 10 squares and weighs 21 lbs. It meets Texas and Florida building codes for durability.

Pros Cons
  • Eco-friendly and 100% recyclable for sustainable building.
  • Superior grip allows stapling without voiding warranty.
  • Lightweight and cost-effective alternative to 15 lb. felt.
  • Wrinkle-free flexibility in low temperatures simplifies installation.
  • 90-day UV resistance approved for commercial/residential use.
  • Limited UV resistance of only 90 days
  • Requires specific fasteners for proper installation

Perfect For:

FT Synthetics Pro 20 Synthetic Underlayment is perfect for roofing contractors and DIY homeowners seeking a lightweight, eco-friendly, and cost-effective solution. Its wrinkle-free design and low-temp flexibility make installation easy, while 90-day UV resistance and a 20-year warranty ensure long-term durability. Approved for commercial and residential use, it’s ideal for slopes 2:12+ with asphalt shingles, metal, or cedar shakes.

Ready to Purchase?

8. FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

FT Synthetics Silver Synthetic Roofing Underlayment – 42″ × 286′ Roll (10 mil), Lightweight 100% Recyclable Polyolefin, Slip-Resistant, 91-Day UV, 20-Year Warranty

FT Synthetics Silver Synthetic Roofing Underlayment is a modern solution for durable, eco-friendly roofing. This 42″ × 286′ roll covers about 10 squares, cutting down seams and reducing weight for easier handling.

100% recyclable polyolefin makes it planet-friendly without sacrificing strength. The dual-sided slip-resistant surface keeps workers safe in wet or windy conditions. Its 10 mil thickness resists tears and wrinkles better than old-school felt.

91-day UV protection ensures it survives harsh sun before installation. Backed by a 20-Year Limited Warranty, it’s built to outlast and outperform.

Pros Cons
  • Lightweight design cuts installation effort and seams for faster roofing jobs
  • Eco-friendly material helps reduce waste without compromising strength
  • Dual-sided grip ensures safe footing in wet or icy conditions during setup
  • Outperforms felt with 10-mil strength that resists rips and wrinkles
  • 91-day UV protection and 20-year warranty guarantee long-term reliability
  • Higher upfront cost than traditional felt underlayment.
  • Limited color options; only available in silver.
  • Not fire-resistant, may not meet all building codes.

Perfect For:

FT Synthetics Silver Synthetic Roofing Underlayment is perfect for homeowners and contractors who want a lightweight, eco-friendly, and durable roofing solution. It’s ideal for those seeking easy installation and long-term reliability.

Ready to Purchase?

9. FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48″ x 250′) (36)

FT Synthetics Platinum Synthetic Roofing Underlayment – 20 mil Polyolefin, GRIPSPOT™ Slip-Resistant, UV-Resistant, 100% Recyclable, Lifetime Warranty (48

FT Synthetics Platinum Synthetic Roofing Underlayment offers professional-grade strength with its 20 mil polyolefin material. It outlasts traditional felt, giving roofs tougher, longer-lasting protection.

Large roll coverage (48″ x 250′) cuts down on seams and speeds up installation. Its GRIPSPOT slip-resistant surface keeps workers safe in wet or dry conditions.

UV and weather resistance handles up to 6 months of sun exposure. 100% recyclable material supports eco-friendly builds. Backed by a Limited Lifetime Warranty for total peace of mind.

Pros Cons
  • Superior durability with 20 mil polyolefin beats traditional felt.
  • GRIPSPOT technology ensures safe, slip-resistant walking in all conditions.
  • UV-resistant for 6 months, perfect for long installations.
  • 100% recyclable and lifetime warranty for eco-friendly, lasting protection.
  • Heavy Roll: 48″ x 250′ size may require two-person installation.
  • Professional-Grade Only: May lack DIY-friendly features for homeowners.
  • Higher Cost: More expensive than traditional felt underlayment.

Perfect For:

FT Synthetics Platinum Synthetic Roofing Underlayment is perfect for homeowners and contractors who want strong, safe, and eco-friendly roofing protection. It’s ideal for large projects needing durable, slip-resistant, and UV-resistant materials.

Ready to Purchase?

10. 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 Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36

FT Synthetics Platinum HT-B is a top-quality roofing underlayment designed for maximum protection. It’s 41 mil thick and acts as a high-temp ice and water shield, keeping your roof safe in any weather.

This product is 100% butyl, nail sealable, and UV resistant. It meets ASTM standards and comes with a lifetime warranty.

With 30 rolls per pallet, each measuring 36″x67′, it’s a reliable choice for long-lasting roofing solutions. Trust FT Synthetics for superior performance.

Pros Cons
  • High-temp resistance for extreme weather protection.
  • 100% butyl adhesive ensures strong, lasting seals.
  • Nail sealable design prevents leaks and damage.
  • UV resistant for long-lasting durability outdoors.
  • Lifetime warranty guarantees reliable performance.
  • High cost may be a barrier for some buyers.
  • Heavy weight requires extra effort for handling and installation.
  • Limited flexibility in colder temperatures during application.

Perfect For:

This product is perfect for homeowners in harsh weather areas needing strong, lasting roof protection. Contractors and builders will love its ASTM certification, UV resistance, and lifetime warranty for reliable, hassle-free installations.

Ready to Purchase?

Buying Guide

FT Synthetics sets the gold standard in roofing underlayment. Their products blend strength, innovation, and eco-friendliness for any project.

Smooth installations and unmatched protection make FT Synthetics a top pick. Users love the slip-resistant surfaces and long-lasting UV shields that handle tough jobs with ease.

  • UV Protection Duration: Choose rolls with 180-day UV resistance for long-term exposure or 91-day options for quicker projects. UV-treated materials stay strong under the sun.
  • Material Matters: Woven polypropylene and polyolefin offer tear resistance and eco-friendly recycling. Butyl-based underlayments stick securely to wood decks for leak-proof seals.
  • Slip-Resistant Safety: Dual-sided grip and GRIPSPOT technology keep workers safe during installation, even in wet or windy conditions.
  • Warranty Confidence: Lifetime warranties back high-temp ice shields and synthetic rolls. 20-year options ensure long-term reliability for standard projects.
  • Coverage & Efficiency: 10-square rolls (1,000 sq. ft.) cut labor time and waste. Larger rolls like 48″ x 250′ cover more ground with fewer seams.
  • Installation Ease: Wrinkle-free designs and split release liners speed up work. Lightweight materials handle cold weather and steep slopes (2:12 and above).
  • Certifications & Standards: Look for ASTM, CSA, and Florida Building Code approvals. Certified products meet strict performance and safety benchmarks.
  • Eco-Friendly Choice: 100% recyclable materials reduce environmental impact without sacrificing durability. Perfect for sustainable builds.

FT Synthetics delivers the ultimate defense for roofs. Match your needs to UV resistance, material type, and project scale to pick the right underlayment. Trust their proven strength and eco-smart tech for lasting results.