PENOSIL Lead Flashing 385 is a dark grey neutral silicone used for roofing and lead flashing works. It creates a durable and watertight seal between lead and other roofing materials. Download the technical data sheet below to see coverage for the 300ml cartridge dependent upon joint width and depth. This sheet also gives recommended width to depth ratios for the sealant. The minimum joint dimensions are 5-6mm width and 5-6 mm deep.
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