Details of the planning permission and building regulation regimes for Doors and Windows. Read Double Glazing on The Web's guide to UK Building Regulations for your windows and doors - it is important before installing any new windows or doors.

If you are installing a patio door in an existing opening, determine your door's rough opening dimensions before purchasing your new door. In some cases, it may be necessary to order a unit based upon the size of the rough opening. To access the studs and measure for the rough opening, carefully remove the casing from the inside of the existing door opening. Take the measurement from the inside surface of the studs.

Measure horizontally across both the top and bottom of the rough opening, as well as vertically on each side. Remove Daemon Tools Sptd Driver here. You may find that the rough opening is not square. When determining what size door you will need, use the smaller of each of your vertical and horizontal measurements. For example, if the left vertical measurement is 83 inches and the right vertical measurement is 82 3/4-in, use 82 3/4-in for the vertical measurement when determining your rough opening size. Save the door casing to be reinstalled after the new door is installed.

Several patio door options are available. Choose the door that appeals to you, depending on your situation and preference. Hinged patio doors open like conventional doors, but feature large glass panes for a view of the outside.

They may be installed as single or double doors, depending on the size of your door opening, but double door units are most prevalent. Sliding patio doors are space-saving alternatives to swinging doors. Unlike swinging doors, which require that objects be set well away from the doorway, sliding doors require no room to swing. Sliding patio doors usually have one door that is fixed and another that slides. They often have aluminum frames, although they may be vinyl, steel or wood.

Folding patio doors are great if a wide, open space is what you’re after. These doors are designed to fold away neatly and help to fill your space with natural light. They may be installed as double or multi doors, the more panels you have, the more natural light. These panels can even fold around 90 degree corners to maximize the width of the patio opening. Any type of door may be characterized as having 'right-hand' or 'left-hand' operation, as viewed from outside, so you must know which side you would like to operate. Purchase your patio doors with the door panels already installed in preassembled frames.