A visible "kitemark" on the glass is the consumers assurance that the double-glazed unit has been manufactured to British standards. The BSI has numerous standards, including: U-value verification, Window Energy Rating and Window Installation. The lower the U-value, the better the thermal performance and most local authorities will require this to be 1.8 or better to meet building regulations.
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.
You may not have notice, but your old fashioned patio door is causing you to spend unnecessary energy. Ordinary glass is a notoriously good thermal conductor. During summer months, it can let heat from the outside to travel inside. And when it is winter, it can easily radiate coldness inside and may cause drafts. More heat or cold inside the home during summer or winter translates into more use of air-conditioning or heating systems. That means more energy use and more carbon emission and more expensive electric bills. But these doors are such an elegant household feature that many home owners before are not worried about spending more money for electricity and more energy that would cause more carbon emissions. Some have advocated the use of tinted patio glass doors. While tinted glass may be a good thermal insulator, it would deprive a home owner the most valued asset of this type of door: visual transparency. A patio door that would not allow a home owner to relax inside his home to get an uninterrupted view of his garden or yard would be just the same as a standard entry door.
Any content, trademark/s, or other material that might be found on this site that is not this site property remains the copyright of its respective owner/s. In no way does HtlvTax claim ownership or responsibility for such items, and you should seek legal consent for any use of such materials from its owner.