Product Data Sheet Show all documents

Vapordiffuser/V

Plastomeric bituminous roof membrane with adhesive spots for use on damp substrates

Vapordiffuser/V is an APP modified bituminous roof membrane which is torch applied, flexible at -10 °C and reinforced with a glass fleece. The underside has spots of a special elastomeric heat adhesive compound, which is activated during torch application. The membrane bonding area is approximately 35% which allows the diffusion of residual moisture from damp substrates.

  • Weight: ~4,0 kg/m²
  • Good flexibility at -10 °C
  • Vapour diffuser and waterproofing incorporated in the same membrane
  • Adhesive strips reduce the strain from cyclic movement across the laying substrate
  • Good mechanical properties (tensile, tear)
  • Easy to install by torching method
  • Choice of primers to suit substrate and weather conditions
  • Can be applied onto concrete substrates and over existing bitumen roofing membranes
 
Product Data Sheet Show all documents

Usage

Roof waterproofing membrane for:
  • Flat and slope roofs under protective layers or ballast
  • Balconies and terraces under a heavy protection layer i.e. tiles, gravel etc.
  • A first layer on damp substrates or old bitumen coverings

Advantages

  • Weight: ~4,0 kg/m²
  • Good flexibility at -10 °C
  • Vapour diffuser and waterproofing incorporated in the same membrane
  • Adhesive strips reduce the strain from cyclic movement across the laying substrate
  • Good mechanical properties (tensile, tear)
  • Easy to install by torching method
  • Choice of primers to suit substrate and weather conditions
  • Can be applied onto concrete substrates and over existing bitumen roofing membranes
 

Packaging

Roll size

Length

7,50 m

Width

1,00 m

Colour

Top surface

Polyethylene film

Backing

35 % adhesive spots covered by polyethylene film

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • CE marking and Declaration of Performance to EN 13707 - Reinforced bitumen sheets for roof waterproofing
 
Product Information

Composition

APP modified bitumen

Reinforcing material

Glass fleece

Shelf life

36 months from date of production

Storage conditions

Product must be stored in original unopened and undamaged sealed packaging in dry conditions and temperatures between +5 °C and +35 °C. Store in a vertical position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Always refer to packaging.

Product declaration

EN 13707: Reinforced bitumen sheets for roof waterproofing

Length

7,5 m -1 %

Width

1 m -1 %
Technical Information

Tensile strength

Longitudinal

300 N/50 mm ± 20 %

Transversal

200 N/50 mm ± 20 %

Elongation

Longitudinal

2 % ± 1 %

Transversal

2 % ± 1 %

Tear strength

Longitudinal

70 N ± 30 %

Transversal

70 N ± 30 %

Flexibility at low temperature

≤ -10 °C

(EN 1109)

External fire performance

F roof

(EN 13501-5)

Reaction to fire

Class E

(EN 13501-1)

Watertightness

60 kPa

(EN 1928-Method B)

Application

Application Information

Ambient air temperature

+5 °C min. / +50 °C max.

Relative air humidity

80 % max.

Substrate temperature

+5 °C min. / +50 °C max.
Application steps

SUBSTRATE QUALITY

The supporting structure must be of sufficient structural strength to apply all new and existing layers of the roof build-up. Complete roof system must be designed and secured against wind uplift loadings.

The substrate must be uniform, firm, smooth and free of any sharp protrusion or burrs, clean, dry, free of grease, bitumen, oil, dust and loosely adhering particles.

SUBSTRATE PREPARATION

Use the appropriate preparation equipment to achieve the required substrate quality.

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