Published at Thursday, September 28th 2017. by Clarice in Patio Doors.
Sight lines is the term used to describe the interruptions in the view through the doors; in other words, the width of the vertical opaque areas between the glass when the doors are closed. On hinged doors, such as French doors and bi folding doors, timber and pvc frames generally have broad sight lines because, unlike aluminium, narrower frames would not be strong enough to be fit for purpose. As a guide to the width of two frames together, cheaper pvc door frames can exceed 200mm, aluminium frames are typically between 135mm and 160mm and frameless patio doors sight lines are under 40mm. Depending on the width of each door and number of doors to be installed, the difference in glass to frame ratio could be significant.
In addition to your choice of wood type, you can also find hardwood patio doors in a variety of sizes, styles and colors. While some hardwoods are stained a certain color, others are painted white or left in their natural color. Popular styles of wooden doors for patios are French doors and sliding doors, although, there are several other styles that also work great. French patio doors have that old-style provincial look that is very classy and elegant. These doors can have one big pane of glass or multiple panes of glass. Depending on how large your door area is, you can have two doors installed, or as many as four standing side-by-side to create a stunning scenic view to your backyard.
Patio doors comprise an outer frame plus individual door frames. These can be made from wood (soft- and/or hard-wood), metal or alloys (usually aluminium), pvc (polyvinyl chloride, a thermo-plastic polymer - the u stands for unplasticised) or a composite material, which may comprise any of the foregoing materials plus grp (glass reinforced polymer). There is also a style known as frameless, where the vertical sides of each door have no frames.
Metal frames, usually aluminium, provide strength in compact form. As notoriously good conductors (which is a bad attribute for insulation), frames made from aluminium are thermally-broken, which is a good attribute. It means that the metals on the inside and outside of the door frames are not joined, preventing the temperatures from being transferred between them. A bare metal frame would look completely unattractive so it is powder-coated in a choice of over 100 standard colours, including a white that resembles pvc.
One of the features that adds real value to a home is the patio area. A patio allows you the option of comfortably relaxing outside while enjoying the weather. Its also a great place to entertain guests for picnics, parties and holidays. When it comes to deciding what to do with the doors leading out to the patio, you also have many options. One of the traditional choices are hardwood patio doors.
Arguably, French doors could be considered as retractable as each door can be pulled back. The advantage of retractable doors is that maximum access is possible between the two sides of the aperture whereas sliding panel doors generally overlap unless built to retract into a recess.