Double Glazing Security & Style PVCu Double Glazing doors using Profile come in a huge variety of styles to suit every application: front, side or rear residential doors, French doors, panelled, half glazed, fully glazed. The glass itself may be patterned, stained or frosted. As well as being good-looking, every door offers real security. The strength of UPVC goes way beyond its attractive exterior to a core of exceptional strength, ensured by multi-chambered construction, and the use of galvanised steel reinforcement. Our Double Glazing Doors are eminently tough and practical, fully compatible with PVCu Index Double Glazing windows and with the option of a low threshold for disabled access. All have excellent insulating properties, keeping out draughts, noise – and the weather. UPVC Double Glazing doors are made with non-flammable PVCu – which will not split, warp, rot, bend or crack.