Traspir
Breathable, water-resistant roofing and wall underlay line for timber-framed construction. Three grades by weight + backing: standard Plain (150), reinforced Evo (160), and Self-Adhered (260). Pick your grade in the sizing panel.
$228.05
Lead Time: 5 business days
Shipping: Varies by size — calculated at checkout
Traspir — breathable underlay
Traspir is Rothoblaas's vapour-open, water-resistant breathable underlay for pitched roofs and timber-framed wall assemblies. The whole line is UV-stable and tear-resistant; grades differ by weight, mechanical robustness, and backing.
Why Traspir
- Vapour-open — assembly drying inward and outward
- Watertight to the deck — sheds bulk water at overlaps
- Class E fire (EN 13501-1)
- UV exposure window — varies by grade; see each variation
Grades
Select grade in the sizing panel:
- 150 g/m² (Plain) — standard residential underlay; mechanical fastening + Flexiband at overlaps.
- 160 g/m² (Evo) — improved tear + UV; longer exposed install window; rougher service.
- 260 g/m² (Self-Adhered) — heavy-duty, fully bonded; high-wind, complex penetrations, no-fastener assemblies.
Format
Plain + Evo: 4′11″ × 164′ rolls (59″ × 164 ft). Self-Adhered: 4′9″ × 164′ rolls (57″ × 164 ft).
Unit
| Length | 13.67 ft |
| Width | 4.92 in |
Pack (shipping)
| Width | 59 in |
| Height | 6 in |
| Weight | 28 lbs |
Key Specifications
| Property | Specification |
|---|---|
| Backing Type | Plain, Evo, Self-Adhered |
| G/m² | 150, 160, 260 |
| Membrane Type | Mechanical, Mechanical |
| Units | Pack, Pallet |
| Units per Pallet | 28, 30, 16 |
Professional Grade
Built for building professionals
Fast Shipping
Direct from manufacturer
Tech Support
Expert installation guidance
Certified Performance
Tested and documented
