TECHNOELAST MOST B GREY SLATE
SBS-MODIFIED BITUMEN WATERPROOFING MEMBRANE FOR BRIDGE AND FLYOVER CONSTRUCTION
SBS-modified bitumen membrane TECHNOELAST MOST B grey slate is designed for waterproofing of reinforced concrete slab of carriageway on bridge constructions and other traffic areas. It can be also used as a single-layer waterproofing of the foundation.
TECHNOELAST MOST B grey slate is the waterproofing material produced by two-sided placing of a high-quality polymer-bitumen binder on a polyester base. The material has additional durability and resistibility features thanks to special formula of polymer-bitumen binder and increased thickness.
On the bottom side the material is covered by a polymer film with special graphic elements, melting of which indicates the proper material heating. On the top side the material is covered by a coarse-grained slate that protects the material from direct sunlight during installation. The membrane can be laid loosely in underground structures.
Waterproofing material TECHNOELAST MOST B grey slate has the following advantages:
- High puncture resistance and resistance to foot marking
- High quality polyester reinforcement
- An additional durability and resistibility features thanks to the special formula of polymer-bitumen binder and increased thickness


Product technical data
PROPERTIES | TEST METHOD | TECHNOELAST MOST B 3.5 mm grey slate | TECHNOELAST MOST B 4.5 mm grey slate |
---|---|---|---|
Protection of the top side | - | coarse-grained slate | coarse-grained slate |
Protection of the bottom side | - | polymer film | polymer film |
Length, m | EN 1848-1 | ≥ 10.0 | ≥ 10.0 |
Width, m | EN 1848-1 | ≥ 1.0 | ≥ 1.0 |
Straightness | EN 1848-1 | ≤ 16 | ≤ 16 |
Mass per unit area, kg/m² | EN 1849-1 | ≥ 4,2 | ≥ 5.4 |
Thickness, mm | EN 1849-1 | 3.6±0.1 | 4.6±0.1 |
Type of carrier | - | polyester | polyester |
Tensile properties: maximum tensile force L / T, N/50mm | ASTM D5147 | ≥ 600 / ≥ 600 | ≥ 600 / ≥ 600 |
Tensile properties: elongation, L / T, % | ASTM D5147 | 40±20 / 40±20 | 40±20 / 40±20 |
Tear resistance L / T, N | ASTM D5147 | 500±150 /500±150 | 500±150 /500±150 |
Softening point, °C | ASTM D36 | ≥ +110 | ≥ +110 |
Flexibility at low temperature, °C | EN 1110 | ≤ -25 | ≤ -25 |
Flow resistance at elevated temperature, °C | EN 1110 | ≥ +100 | ≥ +100 |
Watertightness
at 0.2 MPa for 24 hours |
EN 1928 | Pass | Pass |
External fire performance | EN 13501-5 | Froof | Froof |
Puncture resistance, N | ASTM E 154 | >1050 | >1050 |
Dimensional stability, % | ASTM D5147 | 1.0 | 1.0 |
Adhesion of granules, % | EN 12039 | ≤ 30 | ≤ 30 |
Peel strength to pouring concrete, N/m, | ASTM D 903 | 2000±200 | 2000±200 |
Water vapor transmission properties | EN 1931 | NPD | NPD |
Dangerous substances | - | Does not contain dangerous substances |