Shop
SikaSeal Lead Grey Sealant is a low-modulus, neutral-cure sealant specifically formulated for use with lead and other soft metals. It provides excellent adhesion to materials including lead, copper and zinc, making it an ideal choice for roofing, lead flashing and external weather-sealing applications.
Specially developed as an alternative to traditional mortaring, SikaSeal Lead can be used for sealing lead flashing and sheet materials into brick, stone and concrete. Its flexible formulation accommodates up to ±25% joint movement, helping maintain a durable seal where joints are exposed to movement and changing temperatures.
The lead grey finish provides a neat, discreet appearance alongside lead flashing and other common roofing materials, while its excellent external weathering properties make it well suited to exposed roofline applications.
Key Features & Benefits
- Low-modulus, neutral-cure sealant specifically designed for lead
- Excellent adhesion to soft metals including lead, copper and zinc
- Suitable for sealing lead flashing and sheet materials
- Provides an alternative to mortaring lead flashing into brick, stone and concrete
- ±25% movement capability for flexible, durable joints
- Will not corrode soft metals like lead and other conventional sealants can
- Excellent external weathering properties
- Low dirt pick-up for a cleaner finished appearance
- Suitable for parapet and roof weather-sealing applications
- Can be used over water-based and solvent-based paints
- Suitable for expansion joints and weather sealing to pre-formed panels
- Lead grey colour for a professional, discreet finish
Typical Applications
SikaSeal Lead is suitable for a wide range of roofing and building applications, including:
- Sealing lead flashing into brick, stone and concrete
- Bonding and sealing lead sheet and flashing details
- Sealing soft metals such as lead, copper and zinc
- Parapet and roof weather sealing
- Weather sealing and joint sealing to pre-formed panels
- Expansion joint sealing
- General roofing and flashing maintenance and repair work
Product Specifications
| Specification | Details |
|---|---|
| Brand | Sika |
| Product | SikaSeal Lead |
| Product Type | Low-modulus neutral-cure sealant |
| Colour | Lead Grey |
| Pack Size | 295ml cartridge |
| Movement Capability | ±25% |
| Joint Design | 6–40mm |
| Maximum Joint Depth | 50% of joint width |
| Service Temperature | -50°C to +150°C |
| Application Temperature | +5°C to +40°C |
| Skin Time | 30–45 minutes |
| Coverage | Approx. 10.5 linear metres using a 6mm diameter bead |
| Standards | ISO 11600 F25 LM; EN 15651-1 Class F25LM CC |
Application
Surfaces should be clean, dry and free from dust, grease and other contaminants before application. Priming is generally not required, although Sika recommends testing a small area before full application.
Apply SikaSeal Lead using a standard sealant gun and tool the sealant to ensure good contact with the joint surfaces. Always follow the latest manufacturer's Product Data Sheet and application guidance before use.
For professional roofing, lead flashing and building maintenance work, SikaSeal Lead provides a flexible, weather-resistant sealing solution designed specifically for lead and compatible soft metals.