NBS Source
I'm a manufacturer

Application

  • Intended for use as the capsheet within a bituminous built-up roofing system.
  • Suitable for use in high-performance built-up systems on flat, pitched or curved roofs.
  • Hydrocarbon solvent-based products, such as Naphtha, paraffin and creosote will have a harmful effect and should not be allowed to come in to contact with these membranes.

Description

A torch applied, polyester reinforced, SBS modified bitumen membrane. The polyester carrier is impregnated and then coated in SBS modified bitumen. The upper surface is coated with silica sand and given a 75 mm wide sand-free selvedge for enhanced lap security and is finished with a thermofusible PP film. The underside is given a special grooved profile for torch-on application and is finished with a thermofusible film to prevent adhesion in the roll.


Features and benefits:

  • The material is impervious to water.
  • CE marked (BS EN 13707, 13, 0086-CPD-505779).
  • Unaffected by freeze/ thaw cycling, will support temperatures from -15 to +90 °C without damage.
  • Compatible with most building materials with which it is likely to come in to contact with during roofing works.
  • Correctly installed and maintained systems incorporating Tecnatorch cap sheets may be expected to last 20 years.
  • The material is not susceptible to insect attack or pest damage and is unaffected by fungi, moss, lichen, moulds or bacteria.
  • When incorporated in a suitably designed multilayer system they will greatly improve the long-term performance of that system.
  • The self-finished mineral surface provides a decorative and solar reflective finish for the built-up waterproofing system.
  • The membrane utilizes a special grooved adhesion technology.

General information

Material

Bitumen

Guidance for specification option:

Styrene butadiene styrene (SBS) modified.

Polypropylene

Guidance for specification option:

Thermofusible film.

Polyester

Shape

Other

Length

8000 mm

Width

1000 mm

Uniclass

Pr_25_57_08_75 Reinforced bitumen roofing sheetsPrimary

CAWS

J41/110 Built-up reinforced bitumen membrane warm deck roof covering

J41/120 Built-up reinforced bitumen membrane inverted roof covering

J41/130 Built-up reinforced bitumen membrane cold deck roof covering

J41/405 Single-layer reinforced bitumen waterproof covering

Specification data - Reinforced bitumen roofing sheets

Classification data

Standard

To BS EN 13707.

Material

-

Carrier material

Polyester.

Bitumen modification

Elastomeric.

Thickness (minimum)

3.8 mm.

Weight (minimum)

40 kg.

Manufacturer guidance

Roll weight.

Surface finish

-

Top

Silica sand with thermofusible polypropylene (PP) film to overlap selvedge.

Underside

Thermofusible polypropylene (PP) film.

Material:

Styrene butadiene styrene (SBS) modified bitumen.

Reinforcement

Polyester.

Width

75 mm.

Manufacturer guidance

Selvedge width.

Mass per unit area

To EN 1849-1, 4.5 kg/m².

Watertightness

To EN 1928 (B), pass.

Fire performance

To EN 13501-5, FRoof (t4).

Manufacturer guidance

  • The external fire performance of a roof is dominated by the built-up roof system.
  • No performance can be assessed for the product alone.

Reaction to fire class

To EN 13501-1, class F.

TensileStrength

To EN 12311-2 (A), 900 N/50 mm (MD and TD).

Elongation

To EN 12311-2 (A), 35% (MD and TD).

Dimensional stability

To EN 1107-1, ≤1%.

Flexibility at low temperature

To EN 1109 G, ≤15°C.

FlowResistanceRange

To EN 1110, >90°C

Manufacturer guidance

Flow resistance at elevated temperature.

Ageing

To EN 1296, pass.

Manufacturer guidance

Artificial ageing behaviour.