Wondering what to do with your old windows? Got roof repair issues? Thinking about installing new insulation? Want to avoid a bad masonry job? Wondering if your contractor is right for the job? In March, program organizer Marissa Marvelli will hand the mic over to Kingston-based Derrick McNab, an expert in all things pertaining to historic building restoration. His many skills include decorative paint work, plastering, wood working and finishing, masonry restoration, and slate roofing and repair. He will discuss common restoration and maintenance issues and practical approaches to addressing them.