Hodgson Silfix U7 – Low Modulus Neutral Cure Silicone Sealant (Professional Glazing & Construction Use)
Hodgson Silfix U7 is a high‑performance low modulus neutral cure silicone sealant designed for professional glazing, façade and construction applications. Engineered for excellent adhesion, long‑term flexibility and reliable weather resistance, Silfix U7 is a trusted choice for installers working across domestic, commercial and industrial environments.
With strong bonding to a wide range of substrates—including glass, PVC‑U, coated metals, timber and masonry—Silfix U7 delivers durable, movement‑accommodating seals without the need for a primer in most situations.
Key Features
- Low modulus, neutral cure silicone for high movement capability
- Excellent adhesion to glass, PVC‑U, coated metals, timber, brickwork and concrete
- Forms a durable, flexible, weather‑resistant seal
- Suitable for internal and external use
- UV‑resistant and performs reliably in extreme temperatures
- Easy to apply with smooth tooling characteristics
- Compatible with most glazing systems
- Ideal for perimeter and expansion joints
Ideal Applications
- Perimeter sealing around windows and doors (PVC‑U, aluminium, timber)
- General glazing applications
- Expansion and construction joints
- Sealing in façade systems, curtain walling and cladding
- Industrial and commercial building applications
- Areas requiring long‑term flexibility and weather protection
Technical Data
- Base: Neutral cure silicone
- Consistency: Smooth, thixotropic paste
- Skin Formation: Approx. 10–20 minutes (depending on temperature and humidity)
- Curing Rate: Approx. 2–3mm per 24 hours
- Movement Capability: High (low modulus formulation)
- Temperature Resistance: Typically ‑40°C to +150°C once cured
- Application Temperature: +5°C to +40°C
- Shore A Hardness: Medium‑soft for flexibility (varies slightly by colour)
- Shelf Life: 12 months in unopened cartridges stored cool and dry
(Performance values may vary depending on conditions; refer to the manufacturer’s full Technical Data Sheet for detailed specifications.)
Available Colours
Silfix U7 is typically available in a range of popular glazing and construction colours.
If you want, I can list the exact colours you stock or match them to your existing Hodgson range.
