Description
Demsun N28 Lead Neutral Silicone – The Ultimate Sealant for Professional Roofing & Leadwork
The Demsun N28 Lead Neutral Silicone Grey is a trade-essential sealant developed for the demanding requirements of the roofing industry. Unlike standard silicones, N28 is a neutral-cure (oxime) formula that won’t react with sensitive metals or porous masonry. Its specialized grey pigment ensures that repairs and installations blend seamlessly with lead sheets and slate. At ECO Heat Shop, we supply the professional hardware and high-grade sealants required to keep your property protected from the elements.
Advanced Adhesion for External Construction
Demsun N28 is not limited to leadwork; its superior primerless adhesion makes it an excellent choice for perimeter sealing of window and door frames, as well as for use in expansion joints. Because it releases an alcohol-based vapour rather than acid during curing, it is virtually odourless and safe for use near sensitive surfaces. Whether you are pointing lead into brickwork or sealing roofing tiles, N28 Grey delivers a professional-grade, shrink-proof finish that stands the test of time.
Technical Specifications
- Brand: Demsun
- Model: N28 Lead Neutral
- Colour: Grey (Lead Match)
- Cure Type: Neutral Cure (Oxime)
- Density: 1.02 ± 0.03 g/ml
- Temperature Resistance: -40°C to +120°C (fully cured)
- Skin Formation: 5–15 minutes (at 23°C and 50% R.H.)
- Best For: Lead flashing, roofing repairs, guttering, and expansion joints.
ECO Heat Shop Tip: When sealing lead into a mortar joint, ensure the chase is clean and dry. Using N28 instead of traditional mortar is a more sustainable roofing choice; the silicone’s flexibility prevents the “cracking” often seen with mortar as the lead expands in the sun, ensuring a maintenance-free seal for decades.
Secure your roof with the best. Order Demsun N28 Lead Neutral Silicone Grey online today for expert-grade roofing hardware delivered across the UK.
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