How do I clean off excessive Black Butyl Mastic sealant from around a Caravan Window which is on white alumini

selleys

07 May 2020 04:53 AM

If it is definately Butyl Mastic then Clean up for uncured Butyl Mastic is Mineral Turps or White Spirit. If the sealant has already dried off it may be more difficult to remove however these solvents should still help soften it.