Demsun N28 Lead Neutral Silicone Grey

Demsun N28 Lead Neutral Silicone Grey

Ensure a watertight finish on your roofing projects with Demsun N28 Lead Neutral Silicone Grey. Specially formulated for use with lead flashing and roofing components, this low-modulus, neutral-cure sealant provides a flexible, non-corrosive bond that perfectly matches the colour of aged lead. Shop specialized Demsun N28 roofing hardware at ECO Heat Shop for trade-quality maintenance supplies and fast UK delivery.

  • Non-Corrosive to Metals: Specifically designed to be safe for use on lead, copper, and galvanized steel without causing chemical oxidation or staining.
  • High Movement Capability: Highly elastic formula accommodates the significant thermal expansion and contraction common in metal roofing and flashing.
  • Weatherproof & UV Resistant: Provides a durable, long-lasting barrier against extreme weather conditions, maintaining its seal in both high heat and freezing temperatures.

£4.49 Incl. VAT

View cart
Availability: 6 in stockGTIN: 5060661280789 EAN: 5060661280789 Category: Brand:

Reviews

There are no reviews yet.


Be the first to review “Demsun N28 Lead Neutral Silicone Grey”

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.

Additional information

Weight 0.44 kg
Dimensions 30 × 4 × 4 mm

UK-Wide Logistics

ECO Heat Shop Ltd provides national distribution for plumbing and heating supplies across England, Scotland, and Wales. Orders placed before the 18:00 PM (Afternoon) cutoff are typically processed for same-day dispatch.

View Full Shipping & Collection Policy ›

Smethwick Trade Counter & Store Pickup

Hours: Monday – Saturday: 08:30 AM – 06:30 PM | Sunday: Closed

Location: Unit 8 West Cross Shopping Centre, Oldbury Rd, Smethwick, B66 1JG

Key Cutting Service

In-shop precision key cutting available during standard operational hours. Professional while-you-wait service for Smethwick residents and trade contractors.

Smart supplies for real heat.