Experts diminish concerns about the quality of new windows2014-10-10
As proposals to drastically tighten minimum quality standards for new windows have been appearing recently, experts diminish fears that the standards are not strict enough for Lithuania.
The technical construction regulation “Windows and exterior entrance doors” provides that the coefficient of heat transmission for windows in state- or municipality-funded construction or reconstruction projects must be at least 1.4. Windows with such a coefficient conform to the element values of a building of an energy efficiency class which is above C or B. Therefore there is no point in tightening the minimum quality standards for new windows. “Such abrupt strengthening would negatively affect the overall process of modernisation of multi-apartment buildings as it would inevitably raise the start investments,” Vice-minister for Environment, Daiva Matonienė said.
The State Non Food Products Inspectorate under the Ministry of Economy supervises the quality of new windows on the market while contractors, technical supervisors and the State Territorial Planning and Construction Inspectorate under the Ministry of Environment (VTPSI) do it on construction sites.
As a survey conducted by VTPSI’s local offices has shown, no problems regarding the quality of new windows have been recorded to date during the renovation of multi-apartment buildings in any municipality. No complaints from residents or contractors have been received, either.
A declaration of performance that window manufacturers provide for their products is based on initial tests on those windows carried out by a designated laboratory. In Lithuania, windows are assessed by the approved Laboratory of Building Physics at the Institute of Architecture and Construction of Kaunas University of Technology. There is no laboratory of this type in Latvia and Estonia.
Public information division
10 October 2014