Renovation of a Laundry, paying careful attention to build quality, and managing a healthy indoor air environment. Sealing up the building envelope behind joinery is critical for maintaining a healthy home. The holes behind joinery can allow mice, rates and spiders into your home. Getting fresh air from a mouldy wall cavity is not the best place to be getting fresh air. When it comes to sealing your home, make sure you pay careful attention to ensure everything is sealed before your joinery goes in and it doesn’t need to be pretty.