Quality installer of UPVC doors, windows and conservatories in Gloucestershire and the surrounding counties. Glevum has been trading for over 25 years, is a family run business and has over 11,000 satisfied customers.Trade Bodies / Associations Glass and Glazing Federation (GGF), FENSA, Contractors Health & Safety Assessment Scheme (CHAS) Accredited Contractor, Safe Contractor Approved, The Guild of Master Craftsmen Quality installer of UPVC windows, doors and conservatories throughout Gloucestershire and the surrounding areas. Trade Bodies / Associations Glass and Glazing Federation (GGF) Members , FENSA , Contractors Health & Safety Assessment Scheme (CHAS) Accredited Contractor , Safe Contractor Approved , The Guild of Master Craftsmen , Trust Mark Specialist Services In addition to a conservatory village wirth 15 conservatories and a windows and doors showroom, we have an extensive range of Haddon House Conservatory Furniture and Hot Tubs on site.