Secomastic compound is a general purpose, oil based joint sealant possessing excellent adhesion and durability. The body of the sealant remains flexible under a paintable skin
which forms within 24 to 48 hours dependent on weather conditions. Secomastic maintains a weathertight seal whilst accommodating the limited movements associated
with the recommended applications. Secomastic is suitable for general pointing, bedding and joint sealing up to 20 mm wide.