GAF FeltBuster Synthetic Roofing Underlayment
GAF FeltBuster is a widely adopted synthetic underlayment that earns its market-leader spot by combining low weight, slip-resistant surface, and broad availability that make large installations faster and more economical than traditional felts. Compared with heavier or self-adhered options on this list, FeltBuster offers clear labor- and material-cost advantages for full-roof coverage while sacrificing some of the peel-and-stick waterproofing performance that products like IKO Stormshield or RESISTO provide.
Lightweight handling
Water-shedding ninja
Lightweight handling
Water-shedding ninja
Review Summary
"Users report FeltBuster is a lightweight, durable synthetic underlayment that is easy to unroll and fasten, with good slip resistance; a minority note occasional wrinkles or fastener pops on poor substrate. Overall it’s seen as a reliable, cost-effective felt replacement for typical residential roofs."
Slip-resistant swagger
Lightweight synthetic fabric resists tearing and rot
Slip-resistant swagger
Lightweight synthetic fabric resists tearing and rot
Increased Safety & Security
Optimized Work Efficiency
Time-Saving Convenience
GAF FeltBuster is a widely adopted synthetic underlayment that earns its market-leader spot by combining low weight, slip-resistant surface, and broad availability that make large installations faster and more economical than traditional felts. Compared with heavier or self-adhered options on this list, FeltBuster offers clear labor- and material-cost advantages for full-roof coverage while sacrificing some of the peel-and-stick waterproofing performance that products like IKO Stormshield or RESISTO provide.
Lightweight handling
Water-shedding ninja
Slip-resistant swagger
Lightweight synthetic fabric resists tearing and rot
Slip-resistant surface for safer installation
Lightweight handling
Water-shedding ninja
Slip-resistant swagger
Lightweight synthetic fabric resists tearing and rot
Slip-resistant surface for safer installation
$35-80 CAD
BP Deckshield Roofing Underlayment
BP Deckshield positions itself as a premium woven synthetic underlayment favored for high tear-strength and extended UV exposure tolerance, appealing to contractors who need a durable temporary roof surface during long jobs. Financially it typically sits between economical synthetics like GAF FeltBuster and higher-cost self-adhered membranes, delivering a technical balance of tensile strength and cost that outperforms basic felts but doesn’t carry the premium price of full peel-and-stick systems.
Heavy-duty shield
Rolls out fast
Heavy-duty shield
Rolls out fast
Review Summary
"Reviewers find BP Deckshield provides consistent coverage and good weather protection as a synthetic underlayment, and many installers appreciate its value compared with premium brands; some users mention edge curl or handling issues in extreme temperatures. It’s generally well-regarded for everyday roofing jobs."
Grip-to-stay
Polymer-synthetic construction delivers high tear strength and UV resistance
Grip-to-stay
Polymer-synthetic construction delivers high tear strength and UV resistance
Optimized Work Efficiency
Increased Safety & Security
Time-Saving Convenience
BP Deckshield positions itself as a premium woven synthetic underlayment favored for high tear-strength and extended UV exposure tolerance, appealing to contractors who need a durable temporary roof surface during long jobs. Financially it typically sits between economical synthetics like GAF FeltBuster and higher-cost self-adhered membranes, delivering a technical balance of tensile strength and cost that outperforms basic felts but doesn’t carry the premium price of full peel-and-stick systems.
Heavy-duty shield
Rolls out fast
Grip-to-stay
Polymer-synthetic construction delivers high tear strength and UV resistance
Designed to ventilate moisture and reduce condensation risk
Heavy-duty shield
Rolls out fast
Grip-to-stay
Polymer-synthetic construction delivers high tear strength and UV resistance
Designed to ventilate moisture and reduce condensation risk
$60-140 CAD
IKO Stormshield Ice & Water Protector
IKO Stormshield is a self-adhered ice-and-water protector that earns a position as a market staple by providing robust waterproofing at eaves, valleys, and penetrations with strong adhesion even in cold conditions. Technically it rivals RESISTO’s RedZone for watertight performance but is often priced competitively, giving contractors a cost-effective peel-and-stick choice for critical flashings where GAF or BP synthetics would not provide the same level of membrane protection.
Ice-blocking armor
Self-adhering power
Ice-blocking armor
Self-adhering power
Review Summary
"IKO StormShield receives strong praise for its aggressive adhesion and dependable waterproofing in critical areas (eaves, valleys, penetrations), with contractors calling it effective at preventing leaks; negatives include stickiness that can make positioning difficult and a higher price. Overall it’s considered a top-performing ice-and-water protector."
Weatherproof hug
Self-adhering rubberized asphalt seals around fasteners to prevent leaks
Weatherproof hug
Self-adhering rubberized asphalt seals around fasteners to prevent leaks
Increased Safety & Security
Reduced Stress & Anxiety
Time-Saving Convenience
IKO Stormshield is a self-adhered ice-and-water protector that earns a position as a market staple by providing robust waterproofing at eaves, valleys, and penetrations with strong adhesion even in cold conditions. Technically it rivals RESISTO’s RedZone for watertight performance but is often priced competitively, giving contractors a cost-effective peel-and-stick choice for critical flashings where GAF or BP synthetics would not provide the same level of membrane protection.
Ice-blocking armor
Self-adhering power
Weatherproof hug
Self-adhering rubberized asphalt seals around fasteners to prevent leaks
High-tack, durable membrane protects eaves and valleys from ice dams
Ice-blocking armor
Self-adhering power
Weatherproof hug
Self-adhering rubberized asphalt seals around fasteners to prevent leaks
High-tack, durable membrane protects eaves and valleys from ice dams
$120-260 CAD
RESISTO RedZone Self-Adhered Roofing Underlayment
RESISTO RedZone is a high-performance self-adhered membrane valued for exceptional adhesion, elongation, and multi-layer waterproofing characteristics that make it a premium option for harsh climates and complex roof details. While it typically commands a higher upfront material cost than synthetic options like GAF or BP, its technical advantages in long-term leak prevention and cold-temperature application can reduce lifecycle repair expenses compared with non-adhesive underlayments.
Stick-on confidence
High-heat ready
Stick-on confidence
High-heat ready
Review Summary
"RESISTO RedZone is frequently described as a premium self-adhered membrane with excellent adhesion, flexibility in cold temperatures, and reliable seam performance, favored by pros for detailing; primary complaints are higher cost and occasional availability. Reviews portray it as a high-quality specialty underlayment."
Seal-every-gap
SBS-modified bitumen provides superior adhesion and waterproofing
Seal-every-gap
SBS-modified bitumen provides superior adhesion and waterproofing
Increased Safety & Security
Reduced Stress & Anxiety
Time-Saving Convenience
RESISTO RedZone is a high-performance self-adhered membrane valued for exceptional adhesion, elongation, and multi-layer waterproofing characteristics that make it a premium option for harsh climates and complex roof details. While it typically commands a higher upfront material cost than synthetic options like GAF or BP, its technical advantages in long-term leak prevention and cold-temperature application can reduce lifecycle repair expenses compared with non-adhesive underlayments.
Stick-on confidence
High-heat ready
Seal-every-gap
SBS-modified bitumen provides superior adhesion and waterproofing
Formulated for a wide temperature range and extreme weather durability
Stick-on confidence
High-heat ready
Seal-every-gap
SBS-modified bitumen provides superior adhesion and waterproofing
Formulated for a wide temperature range and extreme weather durability
$180-360 CAD
CertainTeed WinterGuard Waterproofing Shingle Underlayment
CertainTeed WinterGuard is marketed as a contractor-friendly ice-and-water barrier that balances reliable waterproofing with straightforward installation and strong compatibility with CertainTeed roofing systems. It delivers many of the same protective benefits as other self-adhered membranes (e.g., IKO, RESISTO) but is often selected for its cost-to-performance ratio and integrated warranty support when paired with CertainTeed shingles, making it a practical choice where brand-aligned warranty considerations matter.
Winter-proof barrier
Clings like a champ
Winter-proof barrier
Clings like a champ
Review Summary
"CertainTeed WinterGuard is widely praised for its proven waterproofing at eaves and vulnerable roof areas, easy installation, and strong adhesion; some users note challenges in very hot weather or when removing for reroof. It is commonly recommended and trusted by contractors for ice-and-water protection."
Leak-stopping mojo
Self-adhering rubberized membrane commonly used at eaves and valleys
Leak-stopping mojo
Self-adhering rubberized membrane commonly used at eaves and valleys
Increased Safety & Security
Reduced Stress & Anxiety
Time-Saving Convenience
CertainTeed WinterGuard is marketed as a contractor-friendly ice-and-water barrier that balances reliable waterproofing with straightforward installation and strong compatibility with CertainTeed roofing systems. It delivers many of the same protective benefits as other self-adhered membranes (e.g., IKO, RESISTO) but is often selected for its cost-to-performance ratio and integrated warranty support when paired with CertainTeed shingles, making it a practical choice where brand-aligned warranty considerations matter.
Winter-proof barrier
Clings like a champ
Leak-stopping mojo
Self-adhering rubberized membrane commonly used at eaves and valleys
Seals around nails and roof penetrations to block water intrusion
Winter-proof barrier
Clings like a champ
Leak-stopping mojo
Self-adhering rubberized membrane commonly used at eaves and valleys
Seals around nails and roof penetrations to block water intrusion
$110-260 CAD