How to choose appropriate joinery and double glazing

How to choose appropriate joinery and double glazing


Insulating glass is made of two (or three) layers of glass glued together there aluminum spacers filled with silica gel.

For a better thermal and sound insulation, it is preferable that the distance between the sheets of glass be at least 14 to 16 mm over this distance increases the quality of the glass windows are no longer significant.

Low-emission glass with over 50% reduces the heat transfer coefficient of the glass windows, and the price increases not only with the 4-8 Euro / sqm. For better quality, jam inside windows, you can replace the air with argon, but it is lost through the pores while sealing material.

Very important is to choose which company to buy the woodwork. Even with excellent materials, joinery can be of poor quality.
The easiest way is to ask the knowledge that have already installed carpentry, to obtain details about a company or another and if they had problems. Make sure that the manufacturer is working with proper equipment and not improvised.

A higher price does not always ensure adequate and quality, but often can mean a very low price and many future problems. Usually, a lower price is obtained carpentry buy direct from the manufacturer, and not from a company that is only assembled.

Problems that may occur while these are usually:

1. not seal sash that open ("to let down the window!");

2. opening mechanisms no longer work due to improper installation (stuck window! ");

3. condensation occurs between the glass sheets, inside PVC (TERMOPANUL not sealed well);

4. condensation appears on windows (if aluminum is used, condensation occurs and the profile), inside the room, for several reasons:

- Did not use low-emission glass;

- Not-mounted radiators under windows;


- There is room ventilation (ventilation is recommended daily for a few minutes);

- The building there is a very high humidity which may result from damage to health facilities, poor insulation ceilings, flooded basement, no hood in the kitchen, maintaining long-standing open gas stove (burning the methane gas resulting carbon dioxide and water) , the many flower pots, very porous material walls, the house is new and have not yet dry walls, etc. ... When fitted with double glazing joiner to such property, increases the risk of mold and dampness.

5. when it rains, water enters the house, which occurs for two reasons:

- No repairs were made after mounting the external joinery and plastering walls ie, in many cases, water penetrates through the wall and joinery, even if foam was used. If you do not wish to carry out repairs (the block, this is quite difficult, especially if there are many flat-leaf), is required to solicit firm exterior joinery jamb mounting (usually aluminum) and taking on water directs outwards.

- Were not made holes to drain water profiles in addition to getting into the gasket on the outside when it rains, or if they were made, are not sufficient or not the right place.

Most carpentry indicated - depending on where we need it - is from outside the apartments and houses Pvc (possibly wood), aluminum or PVC for offices and retail companies (especially aluminum doors with heavy traffic) .

In terms of heat, pvc profiles are best, with a heat transfer coefficient lower than those of wood or aluminum with or without thermal barrier. They are durable and the price is usually lower than in the PVC joinery of wood or aluminum with thermal barrier.

There is a wide variety of PVC profiles. In addition to considerations related to the design profile, it is important that the outer wall of the profile to be at least 3 mm thick material. Profiles with several rooms have a lower heat transfer coefficient, but still the heat transfer through glass is more than the profile, having a much larger area.

If solid wood joinery wood is very important if proper treatment was made of wood, if the company is producing a quality certificate and provide warranty (usually at least 3 years).

Aluminium joinery is usually more resistant than PVC or wood (there is still the market with an aluminum alloy profile low - you can even hand bend).

There are two types of aluminum profiles: with and without thermal barrier, thermal barrier with the outer side of the interior separated by a plastic material.


design consultancy and glass / metal structures / PVC / aluminum / glass furniture tel: 0725 617 140