{"id":3397,"date":"2017-04-01T10:46:28","date_gmt":"2017-04-01T07:46:28","guid":{"rendered":"http:\/\/andersadlercreutz.fi\/blog\/?p=3397"},"modified":"2017-04-03T10:47:03","modified_gmt":"2017-04-03T07:47:03","slug":"inomhusluft-en-knepig-fraga-insandare-i-ot-1-4-2017","status":"publish","type":"post","link":"https:\/\/andersadlercreutz.fi\/blog\/4-byggande\/inomhusluft-en-knepig-fraga-insandare-i-ot-1-4-2017\/","title":{"rendered":"Inomhusluft en knepig fr\u00e5ga \/ Ins\u00e4ndare i \u00d6T 1.4.2017"},"content":{"rendered":"<p>Om problemen med d\u00e5lig inomhusluft vore enkla att l\u00f6sa skulle de redan ha blivit \u00e5tg\u00e4rdade, men s\u00e5 \u00e4r det ju inte. N\u00e4r man bygger handlar det om en l\u00e5ng kedja h\u00e4ndelser som alla kan leda till problem. Den kommunala beslutsprocessen f\u00f6rsenar sig l\u00e4tt, men eftersom skolan skall \u00f6ppnas i b\u00f6rjan av augusti blir det l\u00e4tt s\u00e5, att man m\u00e5ste strama \u00e5t byggtidtabellen f\u00f6r att barnen skall f\u00e5 b\u00f6rja i skolan n\u00e4r terminen inleds. Och en f\u00f6r stram byggtidtabell \u00e4r inte ett framg\u00e5ngsrecept.<\/p>\n<p>Fr\u00e5gan \u00e4r \u2013 vad borde vi g\u00f6ra?<\/p>\n<p>Kommunerna beh\u00f6ver b\u00e4ttre kunnande p\u00e5 upphandlingssidan. Man skall v\u00e5ga anv\u00e4nda kvalitetsm\u00e4tare b\u00e5de n\u00e4r man upphandlar planerare och byggare. Att v\u00e4lja ett annat alternativ \u00e4n det billigaste skall inte ses som en risk. V\u00e5ra byggnader ska planeras v\u00e4l, byggas med tid och omsorg, sk\u00f6tas om med ansvar av en person som k\u00e4nner helheten &#8211;\u00a0 och repareras n\u00e4r behov uppkommer.<\/p>\n<p>Ventilationens roll i det hela har diskuterats. Maskinell ventilation \u00e4r inte orsaken till v\u00e5ra problem, men den kan f\u00f6rv\u00e4rra det. Mirja Salkinoja-Salonens forskning visar att ventilationskanalerna l\u00e4tt kan sprida problemen och fungera som grogrund f\u00f6r toxiska substanser. Det h\u00e4r problemet kan f\u00f6rv\u00e4rras av att man anv\u00e4nder mycket starka tv\u00e4ttmedel n\u00e4r man putsar kanalerna, tv\u00e4ttmedel som leder till att de svaga mikroberna elimineras, medan de starka blir kvar. Om man sedan ytterligare st\u00e4nger av ventilationen till veckosluten beh\u00f6vs det inte s\u00e5 mycket mer.<\/p>\n<p>N\u00e4r man funderar p\u00e5 den maskinella ventilationens roll \u00e4r det viktigt att man inser att moderna och gamla byggnader \u00e4r olika. Maskinell ventilation i \u00e4ldre byggnader \u00e4r en d\u00e5lig l\u00f6sning om byggnaden inte \u00e4r t\u00e4t, och det \u00e4r gamla byggnader s\u00e4llan. D\u00e5 kan inf\u00f6randet av maskinell ventilation vara b\u00f6rjan till slutet. H\u00e4r m\u00e5ste lagstiftningen klart se att byggnader \u00e4r olika.<\/p>\n<p>Juha Vinhas forskning vid TTY har klart p\u00e5visat att \u00f6kad tjocklek p\u00e5 isoleringen \u00e4r en riskfaktor. D\u00e4rf\u00f6r var det inte bara jag som var orolig n\u00e4r regeringen f\u00f6reslog en drastisk \u00f6kning av energieffektivitetskraven i sin proposition om n\u00e4ra-nollenergibyggnader. H\u00e4r kunde vi alla dra en l\u00e4ttnadens suck n\u00e4r regeringen i h\u00f6stas backade och gick in f\u00f6r rimligare krav, till en del p\u00e5 grund av SFP:s aktiva p\u00e5verkan.<\/p>\n<p>Till sist \u2013 n\u00e4r problemen dykt upp \u00e4r det ofta f\u00f6r sent. En konditionsgransking \u00e4r inte n\u00e5got man skall ta till f\u00f6rst d\u00e5 problemen uppst\u00e5r, det skall vara en kontinuerlig process som g\u00f6rs i f\u00f6rebyggande syfte.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Om problemen med d\u00e5lig inomhusluft vore enkla att l\u00f6sa skulle de redan ha blivit \u00e5tg\u00e4rdade, men s\u00e5 \u00e4r det ju inte. N\u00e4r man bygger handlar det om en l\u00e5ng kedja h\u00e4ndelser som alla kan leda till problem. Den kommunala beslutsprocessen f\u00f6rsenar sig l\u00e4tt, men eftersom skolan skall \u00f6ppnas i b\u00f6rjan av augusti blir det l\u00e4tt [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2468,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[30,46,45],"tags":[],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.12 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Inomhusluft en knepig fr\u00e5ga \/ Ins\u00e4ndare i \u00d6T 1.4.2017 - Anders Adlercreutz<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/andersadlercreutz.fi\/blog\/4-byggande\/inomhusluft-en-knepig-fraga-insandare-i-ot-1-4-2017\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Inomhusluft en knepig fr\u00e5ga \/ Ins\u00e4ndare i \u00d6T 1.4.2017 - Anders Adlercreutz\" \/>\n<meta property=\"og:description\" content=\"Om problemen med d\u00e5lig inomhusluft vore enkla att l\u00f6sa skulle de redan ha blivit \u00e5tg\u00e4rdade, men s\u00e5 \u00e4r det ju inte. 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