Asphalt insulating asphalt on construction cardboard I / 333 is a roll insulation material obtained by saturating building cardboard with asphalt. It is intended for protection against water and moisture. This roofing felt can be used to perform multi-layered horizontal damp proof insulation in underground not exposed to pressurized water. It is not allowed to use roofing felt: in roofing, in waterproofing exposed to pressurized water, to perform vapor barrier, in the outer layers of the insulation system exposed to water and moisture.

Technical data:

- roll length: not less than 20 m, not less than 40 m,
- roll width: not less than 1 m,
- deviation: not more than 20mm on 10m of roofing felt,
- weight: 0.63 5%,
- watertightness: watertight at 2 kPa pressure,
- flexibility at low temperatures of 0 C,
- maximum tensile strength along: 400 100 N / 50 mm,
- maximum tensile force across: 300 100 N / 50 mm,
- elongation at the maximum tensile force along: 3 2%,
- elongation at the maximum tensile force across: 3 2%,
- shear strength of the joint along the overlap: 500 150 N / 50 mm,
- shear strength of the joint at the plant crosswise: 400 150 N / 50 mm,
- nail tear resistance along: 55 15 N,
- nail tear strength across: 55 15 N,
- resistance to static loads: 20 kg,
- impact resistance: NPD (mm),
- water vapor diffusion rate: 1.6 x 10 ^ 10 25% (m ^ 2 * s * hPa) / kg,
- fire classification: class E,
- durability and resistance to artificial aging under the influence of temperature (water resistance test after artificial aging under the influence of temperature): waterproofing membrane,
- durability and resistance to chemicals in (watertightness test after exposure to chemicals): waterproofing membrane,
- number of rolls on a pallet: 35 pcs,
- has all the documents permitting use.