weber.tec 911 Bitumen Filler 1 kg – Fiber-reinforced Repair and Sealing Compound
Saint-Gobain Weber's weber.tec 911, formerly Plastikol 1, is a ready-to-use, solvent-based, fiber-reinforced bitumen sealant. It is used for sealing and repairing roofs, gables, and structures, for example, at lead and zinc joints, or for repairing cracks or blisters in old roofing felt. According to Weber, the sealant also adheres to slightly damp surfaces.
Who is bitumen filler suitable for?
The filler is aimed at roofers, tradespeople and homeowners who want to repair damaged areas on bitumen roofs, connections or components; for large-area sealing of basement walls in contact with the ground, a thick bitumen coating such as Weber Bitumen 1K is more suitable .
Areas of application and selection criteria
Typical uses and points to check before ordering:
- Repair and sealing work on roofs and gables
- Sealing of roof valleys and connections made of lead and zinc
- Removing blisters and bumps in old roofing felt
- Sealing cracks in building construction and civil engineering
- Substrates: mineral, bitumen, tar or metal
- Consumption: approx. 1.25 kg/m² per mm layer thickness
- Not for drinking water tanks and green fodder silos
- Solvent-based: Observe occupational safety regulations.
Your advantage when buying
The 1 kg can is ready for immediate use and is well suited for spot repairs without mixing; you can find other sealing and repair products from the manufacturer in our Weber Saint-Gobain category .
What you should pay attention to when making your selection
The substrate, layer thickness and weather conditions are crucial, as they determine the adhesion and drying of the repair area.
Subsoil and preparation
The substrate must be frost-free, firm, clean and sufficiently dry; Weber primes dusty surfaces and concrete with weber.tec 902.
Layer thickness and drying
Apply a maximum of 4 mm per application; according to Weber, drying takes approximately 5–8 days depending on the weather, layer thickness and substrate.
Processing and application limits
Strong sunlight can cause blisters to form more easily, therefore apply thinner coats in several passes; Weber protects zinc gutters from acidic oxidation residues of the bitumen with weber.tec 905.
Product features at a glance
Technical data: weber.tec 911 Bitumen filler 1 kg
The most important information for planning and ordering at a glance; the values are taken from the Saint-Gobain Weber Technical Data Sheet (as of 07/2026).
| Manufacturer | Saint-Gobain Weber GmbH |
| product | weber.tec 911 Bitumen filler (formerly Plastikol 1) |
| Article number and EAN | Shop 13962; EAN 4011361161886 |
| Container | 1 kg metal can |
| Composition and consistency | Bitumen, solvent-based, fiber-reinforced; pasty, black |
| Density and dry residue | 1.25 g/cm³; 75% |
| Suitable substrates | Mineral substrates, bitumen, tar, metal |
| consumption | Approximately 1.25 kg/m² per mm layer thickness |
| Layer thickness | Maximum 4 mm per operation |
| processing | 1 to 35 °C; application with trowel or spatula |
| Drying and storage | 5–8 days; at least 24 months dry in the sealed original container |
| Cleaning and restrictions | Clean tools with white spirit; not for drinking water containers and green fodder silos |
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