Green roofs

Zeleni krovovi su obloga ili nastavak ravnog ili kosog krova. Iako se zeleni krovovi danas rijetko viđaju, oni nisu neko čudo moderne arhitekture. Naime, prisutni su od davnina kao pokrov starim ljudskim skrovištima. U usporedbi s klasičnim suvremenim krovovima zeleni krovovi su energetski znatno učinkovitiji, bolje zadržavaju toplinu, umanjuju vibracije i zvukove iz okoline. Posebno je bitno naglasiti da štite i od prirodnih katastrofa poput poplava i požara. Razlikujemo dva tipa zelenih krovova po debljini slojeva ; ekstenzivne i intenzivne. Zemlja koja se koristi kao pokrov treba biti posebno pripremljena. Pri projektiranju zelenih krovova posebna pažnja pridaje se hidroizocaciji i odvodnji krova, također je bitno voditi računa o nagibu krova te o korjenju samog zelenila. Krovovi su radi stalne izloženosti vanjskim utjecajima teško mjesto za biljke, stoga je potrebno saditi izdržljive kulture kao što su sitni sukulentni ili mediteransko bilje. Nažalost zeleni krovovi su još uvijek podosta strana tehnologija u Hrvatskoj, iako za to nema razloga. Kvalitetni materijali i napredna tehnika izvođenja omogućuju brza i relativno povoljna rješenja.Green roofs are a covering or continuation of a flat or sloping roof. Although green roofs are rarely seen today, they are not some miracle of modern architecture. Namely, they have been present since ancient times as a cover for old human burrows. Compared to classic modern roofs, green roofs are significantly more energy efficient, retain heat better, and reduce vibrations and sounds from the environment. It is especially important to emphasize that they also protect against natural disasters such as floods and wildfires. Two types of green roofs are destiguishable regarding the thickness of their layers; extensive and intensive. The soil used as cover should be specially prepared. When designing green roofs, special attention is paid to waterproofing and drainage of the roof, it is also important to take care of the slope of the roof and the roots of the greenery itself. Due to constant exposure to external influences, roofs are a difficult place for plants to grow, therefore it is necessary to plant hardy crops such as small succulents or Mediterranean plants. Unfortunately, green roofs are still quite a foreign technology in Croatia, although there is no reason for that. High-quality materials and advanced production techniques enable quick and relatively affordable solutions