Martine Patio Doors October 03rd, 2017 - 04:18:39
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.
As with timber, the quality of pvc frames available can vary - and generally, you get what you pay for. The better ones will usually be reinforced with metal, internally, for greater strength but the cheaper options can be a nightmare to live with - sticking, twisting, splitting, discolouring, warping - often within a very short time. Most usually supplied as white, some manufacturers offer limited colour options or wood effect finishes.
Generally, timber frames are considered more traditional and can look beautiful! Hard wood such as oak is, as the name suggests, far more hard-wearing than a soft wood such as pine. Weather, especially strong sun, can take its toll on timber frames which could need to be varnished or painted annually. Wooden frames can swell and shrink with humidity, therefore opening and closing doors can require force and gaps can allow draughts in colder temperatures.
Traditional patio doors are made of wooden frames. Wood is certainly an elegant frame for a door. The main drawback those with wooden frames is cost. Arguably, these doors are a lot cheaper than wooden ones. In terms of durability, aluminum beats wood. With a high tensile strength, aluminum is made to last a lifetime. It does not easily get scratched by cats or dogs like wood does; aluminum is virtually scratch-free if taken cared of properly. Longevity of aluminum cannot be questioned, too. Compared to wood, aluminum does not suffer from rot. Nor would it easily corrode. Pound for pound, aluminum doors to your patio outmatch wooden ones where toughness is concerned.