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 |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
|
![]() |
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. |
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 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 |
|---|---|
|
|
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′)

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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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 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 |
|---|---|
|
|
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.