Waterproofing membranes of Tyvek

You can buy goods Waterproofing membranes of Tyvek here!
The unique nonwoven structure of Tyvek developed by experts Dupont provides a combination of durability, protective properties and vapor permeability on all surface of a cloth.
High vapor permeability of the materials Tyvek allows moisture from a heater and other elements of a design freely to pass through it in the ventilated space that prevents process of a skaplivaniye of condensate, wood destructions, interferes with decrease in characteristics of thermal insulation.

More than 25% of heatlosses in the house go through a roof for this reason it is necessary to approach its warming especially carefully. It is required to pick up the necessary thickness of a layer of thermal insulation and to provide an eezashchita from moisture, when moistening thermal insulation for only 5% its heattechnical characteristics worsen more than twice. It leads to frost penetration in a roof, education naledy on a roofing covering, to rotting of rafters and obreshetka, to emergence of a mold, damage of internal finishing of rooms.

Moisture can get to thermal insulation:

• from the inside of a roofing covering (condensate);
• from the room (evaporation);
• because of defects of installation.

Specialized waterproofing membranes of Tyvek and paroizolyatsionny membranes of AirGuard are applied to protection of thermal insulation against moisture, and also conditions for ventilation podkro velny space are created. For reduction of formation of condensate on a cold lower surface of sheets it is necessary to provide the movement of air from eaves to the fad between a roofing covering and a waterproofing membrane, without creating hindrances for an air flow through cracks in filing of eaves and air outlet under the fad through special ventilating exits. For effective mixture of streams of air, it is recommended to arrange "a cold triangle" under the roof fad. It will allow to establish exits of subroofing ventilation not in each rafter flight, and is much more rare.