Mapei Blackfill Bitumen Sealant Black 300ml | Roof ...
Mapei Blackfill Bitumen Sealant Black 300ml will adhere as it is designed to seal around fixtures and penetrations such as flues, vents and windows, etc.. However Mapei Mapesil Solvent-Free Silicone Sealant White 310ml (65107) is normally recommended around windows and door installation to seal the joints and finishing trims. 5 Jan 2021.