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Viafelt UP

Viafelt UP is a bituminous waterproofing and breathable felt. It’s characterized by a bitumen impregnated non-woven polyester inlay,  with a TNT polypropylene finish on both faces.
Viafelt UP is indicated as an undertiles screen, as well as separation layers, scroll, or temporary protection layer.


- Absolutely waterproofing
- Promote the vapor transmigration in the external environment
- Rotproof
- Tearing resistant
- Light and easy to install
- Very good quality, thanks to the raw materials used
- The TNT polypropylene surface reduces operators slipping risk

Viafelt UP is very easy and quick to install.
The felts must be applied parallel to the eaves with transverse and longitudinal overlaps with metal staples or clout nails every 5-8 cm. With less than 15% slopes, the felts overlap has to be at least 15 cm.
Aspect rolls
Areic mass g/m² 380
Thickness mm 0,6
Max tensile force (longitudinal) N/5cm 440
Max tensile force (transversal) N/5cm 360
Elongation (longitudinal) % 40÷50
Elongation (transversal) % 50÷60
Resistance to tearing (longitudinal) N 230
Resistance to tearing (transversal) N 230
Resistance to static loading P.S 3
Watertightness H2O ------- classe W1
Vapor permeability g/m2x24h 0,95
Availability In stock
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November 7, 1940 - Collapse of the Tacoma Narrows Bridge. The cause is the  hight stress caused by the wind force  to the bridge structure.
Viapol '63
This year Vetroasfalto celebrates the 56 years of life of its flagship product: the VIAPOL brand.
We would like to thank all our customers for the cofidence shown so far in our main product.

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