Rainbuster 420- Nail on Flashing Membrane
RainBuster 420 Nail-On Flashing 9" x 75' (25 mil) is a premium waterproof flashing membrane engineered for fast installation and long-term protection.
Featuring a rugged 3-layer construction with a self-sealing rubberized asphalt core, it delivers superior moisture protection for windows, doors, and wall systems in residential and commercial construction.
âś” Key Features
- Nail-on installation – no peel & stick backing required
- Self-sealing membrane seals around nails and fasteners
- Heavy-duty 3-layer design resists job site damage
- UV resistant up to 120 days
- Performs in all weather conditions
- Withstands high winds and structural movement
- Ideal for window, door, and wall flashing
📦 Product Specifications
| Product Name | RainBuster 420 Nail-On Flashing |
| Thickness | 25 mil |
| Width | 9 inches |
| Length | 75 feet |
| Material | Rubberized asphalt core with polyethylene & polyester films |
| Tensile Strength | 580 psi |
| Elongation | 130%+ |
| Service Temperature | Up to 180°F |
| UV Exposure | Up to 120 days |
đź› Applications
- Window and door flashing systems
- Sheeted and open wall construction
- Residential and commercial waterproofing
- Flashing for rough openings and structural joints
âš™ Installation Guidelines
- Install with white (printed) side facing outward
- Secure using nails or mechanical fasteners
- Compatible with most construction substrates
- Follow AAMA, ASTM, and local building codes
🧪 Performance & Durability
- Self-seals around fasteners to prevent water intrusion
- Maintains performance under high heat (up to 180°F)
- Flexible and durable in changing conditions
- Resistant to tearing and punctures
âš Limitations
- Not recommended behind metal siding or roofing systems
- Must be covered after 120 days of UV exposure
🛡 Warranty
- Limited Lifetime Product Warranty (100 years)
- 30-Year System Warranty when used with RainBuster 450 Sealant
Why Choose RainBuster 420 Flashing?
Unlike traditional peel-and-stick flashing tapes, RainBuster 420 offers faster installation with nail-on application while maintaining superior waterproofing performance. Its advanced membrane technology provides long-term durability, making it a trusted choice for contractors, builders, and construction professionals.
Frequently Asked Questions
Is this better than peel-and-stick flashing?
Yes, it installs faster and still provides self-sealing waterproof protection around fasteners.
Can it be used in cold or wet weather?
Yes, it is designed for installation in all weather conditions.
Does it seal around nails?
Yes, the rubberized asphalt core self-seals around fasteners to prevent leaks.
How long can it be exposed to sunlight?
Up to 120 days before it must be covered.
What sealant should be used with this?
RainBuster 450 Window & Door Sealant is recommended for full system performance.
Original: $6,600.43
-65%$6,600.43
$2,310.15Product Information
Product Information
Shipping & Returns
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Description
RainBuster 420 Nail-On Flashing 9" x 75' (25 mil) is a premium waterproof flashing membrane engineered for fast installation and long-term protection.
Featuring a rugged 3-layer construction with a self-sealing rubberized asphalt core, it delivers superior moisture protection for windows, doors, and wall systems in residential and commercial construction.
âś” Key Features
- Nail-on installation – no peel & stick backing required
- Self-sealing membrane seals around nails and fasteners
- Heavy-duty 3-layer design resists job site damage
- UV resistant up to 120 days
- Performs in all weather conditions
- Withstands high winds and structural movement
- Ideal for window, door, and wall flashing
📦 Product Specifications
| Product Name | RainBuster 420 Nail-On Flashing |
| Thickness | 25 mil |
| Width | 9 inches |
| Length | 75 feet |
| Material | Rubberized asphalt core with polyethylene & polyester films |
| Tensile Strength | 580 psi |
| Elongation | 130%+ |
| Service Temperature | Up to 180°F |
| UV Exposure | Up to 120 days |
đź› Applications
- Window and door flashing systems
- Sheeted and open wall construction
- Residential and commercial waterproofing
- Flashing for rough openings and structural joints
âš™ Installation Guidelines
- Install with white (printed) side facing outward
- Secure using nails or mechanical fasteners
- Compatible with most construction substrates
- Follow AAMA, ASTM, and local building codes
🧪 Performance & Durability
- Self-seals around fasteners to prevent water intrusion
- Maintains performance under high heat (up to 180°F)
- Flexible and durable in changing conditions
- Resistant to tearing and punctures
âš Limitations
- Not recommended behind metal siding or roofing systems
- Must be covered after 120 days of UV exposure
🛡 Warranty
- Limited Lifetime Product Warranty (100 years)
- 30-Year System Warranty when used with RainBuster 450 Sealant
Why Choose RainBuster 420 Flashing?
Unlike traditional peel-and-stick flashing tapes, RainBuster 420 offers faster installation with nail-on application while maintaining superior waterproofing performance. Its advanced membrane technology provides long-term durability, making it a trusted choice for contractors, builders, and construction professionals.
Frequently Asked Questions
Is this better than peel-and-stick flashing?
Yes, it installs faster and still provides self-sealing waterproof protection around fasteners.
Can it be used in cold or wet weather?
Yes, it is designed for installation in all weather conditions.
Does it seal around nails?
Yes, the rubberized asphalt core self-seals around fasteners to prevent leaks.
How long can it be exposed to sunlight?
Up to 120 days before it must be covered.
What sealant should be used with this?
RainBuster 450 Window & Door Sealant is recommended for full system performance.
