Crafted energy-saving secondary glazing and insulation for period homes and listed properties. Mitchell & Dickinson’s CosyGlazing is a unique secondary glazing system that is elegant and effective. Made of a modern, lightweight equivalent to glass, it’s fixed using magnetic strips so is easy to remove and virtually invisible. Choose a finish to complement your period or listed property. We also provide high quality draught proofing for period properties such as sheep’s wool insulation. Based in North Devon and Bristol, we work for owners of listed and period properties across the South and South West including the Home Counties, Exeter, Taunton, Bath, Bristol, Truro and Plymouth to make their homes warmer.