PENOSIL 300ml Lead Flashing and Roofing Silicone 385 – Dark Grey

The PENOSIL 385 in Dark Grey is a high-performance, low-modulus neutral-cure silicone specifically engineered for the roofing trade. It is designed to replace traditional sand and cement pointing for lead flashings, providing a flexible, watertight seal that accommodates the high thermal expansion and contraction rates of lead sheet without cracking.

Key Features
Lead-Safe Neutral Cure: Formulated as a neutral oxime silicone to ensure it is non-corrosive to lead, galvanised steel, copper, and aluminium.

High Movement Capability: Specifically designed to withstand the significant thermal movement of lead flashings and dissimilar roofing materials.

Excellent Primerless Adhesion: Bonds exceptionally well to lead, masonry, brick, concrete, stone, and most roofing tiles without the need for a separate primer.

Weather & UV Resistant: Highly durable and resistant to extreme temperature fluctuations (-40°C to +150°C), UV radiation, and ageing.

Fast Skinning Time: Formulated for efficiency in outdoor environments, with a quick skin-forming time to protect the joint from dust and rain shortly after application.

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