Tyvek StraightFlash 4 inch x 150 ft
Tyvek StraightFlash 4 inch x 150 ft
Out of stock
DuPont™ Tyvek® StraightFlash™ – 4 in x 150 ft Self-Adhered Flashing Membrane
DuPont™ Tyvek® StraightFlash™ is a professional-grade self-adhered flashing membrane engineered to provide dependable air and water barrier protection around window and door openings. The 4-inch width makes this version ideal for narrower flanges and standard rough openings where a compact, straight-run flashing membrane is the best fit.
In simple terms: This flashing membrane seals straight runs around window and door frames to help keep wind and water out of the wall system — especially when flange width is limited.
StraightFlash™ features a durable Tyvek® topsheet and a high-performance adhesive that bonds reliably to properly prepared substrates. Its scored release liner and pressure-activated adhesive help make installation easier and more forgiving.
Best For
- Contractors: Narrow window and door openings, smaller transitional flanges, and standard jobs where wider membranes are unnecessary.
- Builders: Projects seeking a compact flashing membrane that integrates cleanly with housewrap and WRB systems.
- DIY/Homeowners: When you want professional flashing performance but don’t need wider coverage.
Key Benefits
- Narrow-profile coverage: 4″ width makes for a less bulky flashing run ideal for smaller flanges and straightforward openings.
- Air & water protection: Helps block wind-driven rain and air infiltration at vulnerable transitions.
- Durable membrane: Reinforced Tyvek® topsheet resists jobsite handling stress.
- Reliable adhesion: Designed for a strong moisture-resistant bond when installed on clean, dry surfaces.
- System compatibility: Works with Tyvek® weather-resistive barriers (WRBs) and accessory tapes for complete detailing.
Typical Applications
- Flashing narrow flanged windows and doors
- Straight sill, jamb, and head flashing runs
- Small to moderate wall transitions requiring membrane protection
- Detailing where compact width is preferred
Specifications
| Product Type | Self-adhered flashing membrane |
| Size | 4 in x 150 ft |
| Brand | DuPont™ Tyvek® |
| Primary Use | Flashing narrow window and door flanges |
| Compatibility | Integrates with Tyvek® WRBs and accessory tapes |
Installation Notes (Best Practice)
- Surface prep: Install on clean, dry surfaces free of dust, oils, and debris for maximum adhesion.
- Press and roll: Apply firm, even pressure to ensure full contact across the membrane surface.
- Sill first: Flash sills first, then jambs, then heads to promote proper drainage.
- Sequence matters: Plan coverage to minimize seams and overlaps where possible.
Why It Matters
Proper flashing is critical to wall performance. Narrow openings and standard flange widths benefit from a dedicated membrane that provides a cleaner, less bulky flashing run. Tyvek® StraightFlash™ 4 in x 150 ft helps protect against water intrusion and air leaks while integrating seamlessly with Tyvek® weather-resistive barriers.
Common Questions
Q: When should I use 4-inch StraightFlash™?
A: Use this version when flange widths are narrow or standard, and when broader membranes would be unnecessary or bulky.
Q: Can this be used with Tyvek® HomeWrap® or CommercialWrap®?
A: Yes — it integrates with Tyvek® weather-resistive barriers for complete envelope protection.
Q: Is this good for curved or corner flashing?
A: No — for inside/outside corners or curved transitions, consider a flexible flashing like Tyvek® FlexWrap™.
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