Doors allow not only welcome guests passage, but in the worst case even draughty air, heat and even burglars. These undesirable side effects can easily be counteracted – with the installation of new, safe and energy efficient doors.
Let us show you what options are open to you and what you should take care when buying doors.
The various doors
Doors differ not only in shape and color, but also in their material and the location in which they are used. For the respective types therefore give different requirements that you should address in your planning.
Material differences of front doors
Front doors are made of different materials. Particularly widespread are doors made of wood, glass, plastic and aluminum. Each material has certain properties that are particularly suitable for front doors. The combination of several materials can in many cases lead to an optimization or combination of properties, making the doors more energy efficient and weather resistant.
What you should look at the purchase of your house doors
When choosing your future house doors the planned site is an important decision aid. Outwardly leading doors, for example, entrance doors, patio doors or balcony doors require a special protection against intruders and should always correspond to the Energy Conservation Act. In internal passages, however no particular intrusion detection is necessary. The energy efficiency, however, should not be allowed even in these doors aside, otherwise, the drafts leaky doors lead to disease and discomfort.
Front doors that lead directly to the outside, are often used by burglars as an entry way. The police therefore recommends only external doors with a correspondingly high resistance class (RC) – RC2 least – to have installed.
The resistance class specifies how long doors an attempted break-in about withstand. It is divided into six grades. The lowest protection is described by the RC1, which is why they are not suitable for exterior doors. The RC6 is the highest resistance class. You can a professional burglar can withstand more than 20 minutes. RC2 has a resistance of 3 minutes RC3 of 5 minutes.
In addition, doors can be with different fuses, such as alarm systems and door locks, equipped to allow an even higher protection.
The requirements of the EnEV
In the Energy Saving Ordinance (EnEV) Minimum requirements have been established on energy buildings that must be adhered to both in wall insulation, roof insulation, as well as doors. To save energy and protect the environment, compliance with the EnEV in all renovations and new construction is mandatory.
The lower the thermal conductivity coefficient (U-value) – measured in watts per square meter times Kelvin (W/m²k) – is, the more energy efficient the house doors.
Balcony and terrace doors are counted to windows or balcony doors, so a lower U-value is required. However, this greatly depends on the glazing and gas filling in the spaces between the glass – the values should nevertheless be exceeded under any circumstances.
Label for house doors
While manufacturers present in some cases not a neutral image of their products and their properties, it is attempted with audited mark to ensure an objective presentation. Front doors can have the RAL quality mark and a CE marking.
RAL quality seal: If Deutsches by independent experts of the RAL Institute for Quality Assurance and Certification e.V. awarded to products and services. The department responsible for the review of the doors and their professional installation is the Institute for Window Technology by Gütegemeinschaft windows and doors.
CE Marking: To be installed in 2009 under the harmonized format Communauté Européenne (European Community) autonomously by the manufacturer. This indicates the fact that its products meet the minimum requirements of the EU directives and the legal requirements. The characters can be directly on the product or on accompanying document, delivery, installation, use and maintenance manual.