Bitumen base sheet membranes form the foundation of multi-layer bituminous roofing systems, providing an initial waterproofing layer and a secure substrate for subsequent membrane applications. SikaShield® base sheets are available in both torch-applied and self-adhesive options, offering solutions for a range of roof constructions and installation requirements. Designed to deliver reliable adhesion, durability and compatibility with overlying waterproofing layers, these membranes are suitable for use in flat roof waterproofing systems across different new build and refurbishment projects.
Comparison of Sika's Bitumen Base Sheets
SikaShield® E74 PE SA 3 mm
SikaShield® E74 PE SA 3 mm is a self-adhesive SBS modified bituminous base sheet membrane designed for use in torch-free and Safe2Torch areas. Reinforced with a non-woven polyester fabric and stabilised with fibreglass, it offers high durability and is flexible even at very low temperatures.
Key features:
- Self-adhesive installation
- FM Approved
- Suitable for Safe2Torch applications
- Highly durable
- Highly flexible in cold temperatures
- Compatible with a variety of substrates including metal, plywood, OSB, polystyrene and polyurethane insulation
- Self-adhesive overlap strip for fully bonded joints
- Suitable for flat roofs, pitched roofs, inverted roofs and refurbishment projects
SikaShield® E54 PE 3 mm
SikaShield® E54 PE 3 mm is an SBS modified bituminous waterproofing membrane designed for use as an underlay layer within multi-layer roofing systems. Reinforced with non-woven polyester fabric stabilised with glass fibre, it is highly durable and strong and is suitable for torch-applied installation.
Key features:
- Torch-applied installation
- FM Approved
- Flexible
- Highly durable
- Fully bonded
- Polyethylene film surface to ensure full bonding of overlying layers
- Suitable for flat roofs, pitched roofs, inverted roofs and refurbishment projects
SikaShield® E74 PE SA 3 mm and SikaShield® E54 PE 3 mm are FM Approved.
FM Approvals tests and certifies property damage prevention products and systems for property damage prevention - for use in commercial and industrial facilities - to validate that they meet the highest performance, quality and safety standards.
