How to choose the right external door?
Buying an external door should be well thought out, as it is an important finishing element of every house which serves its residents for many years. An entrance door must serve several significant functions: be an effective barrier to possible intruders, separate the interiors from the outside world, protect them against excessive noise and against the escape of heat. It should therefore be solid, hard-wearing, attractive and warm. An excellent choice is to install a timber door, which not only looks beautiful but is also distinguished by excellent performance.
Why is thermal insulation an important parameter of an external door?
The external door is the calling card of a house. It must be attractive, solid, secure, quiet and warm. It should effectively protect the interiors of a house against unfavourable weather conditions, safeguarding the rooms against heat loss. A warm entrance door will contribute to saving energy, and so will have a direct influence on lowering heating bills. Thermal insulation is indicated by the thermal transmittance U. Under the regulations in force since 2021 it should not exceed 1.3W/(m2K). The lower this coefficient is, the warmer the external door. Particular attention should be paid to this if we are applying for a grant or want to take advantage of a thermal modernisation relief.
What thermal values do timber external doors have?
Timber external doors have excellent thermal values. Our company offers its customers timber external doors in profiles of two thicknesses – 68 mm and 78 mm. The U value of a door with a profile 68 mm thick is 1.4W/(m2K); for doors with profiles 78 mm thick this coefficient has a value of 1.1W/(m2K). We make our doors of solid, laminated timber. In doors 68 mm thick the square timber consists of three layers. In doors 78 mm thick the square timber is laminated from four layers of lamella. So that a door meets the standards and gives the interiors of a house the proper thermal insulation, it is worth choosing its thicker variant. A door with a profile 78 mm thick will guarantee appropriate protection against the cold and safeguard the interiors against the loss of valuable heat.
A door threshold with a thermal break is also a significant element of the thermal insulation of every house. Proper installation and sealing of the threshold is an extremely important element and a problematic one in every building, especially a new one. The threshold used by the Wiktorczyk company is a low threshold, which allows free passage and is also suited to people with disabilities.