Every tenth family house is insulated, and half of those are poorly done

Prague - There are nearly 200 thousand insulated family houses in the Czech Republic, which is about 11%. Half of them are additionally poorly insulated. The most common mistake is insufficient insulation thickness. This follows from an analysis for the Association of Manufacturers of Mineral Insulation (AVMI).
    "Underestimating insulation thickness is the most common mistake that Czechs make when insulating. Often, their only selection criterion is price, which can ultimately mean that the insulation does not bring the desired economic effect," stated AVMI representative Marcela Kubů, who claims that generally, investments in insulation with less than fifteen centimeters of thickness are practically not worthwhile. "The highest costs are associated with the implementation of insulation; the price difference in insulation thickness itself is minimal," emphasized Kubů.
    Other mistakes include unsuitable materials, unprofessional installation, or unresolved details, which can increase energy losses by up to 20%. "From our practice, it follows that about 50% of insulation systems suffer from defects that reduce their functional properties or lifespan," added Petr Vlasák, a building quality specialist.
    Kubů from AVMI warns that poorly executed insulation costs Czech households a lot of money. "A high number of family houses do not fully utilize the savings potential that insulation brings. If we were to quantify the losses financially, Czechs unnecessarily spend up to 750 million crowns annually on heating poorly insulated houses," calculated Kubů.
    There are currently about 1.8 million apartments in family houses in the Czech Republic. According to the Czech Statistical Office (ČSÚ), their average age exceeds 50 years. The oldest family houses are in the Ústí, Karlovy Vary, and Liberec regions.