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sbian226_preview_01.pdf

Neergaards Vej 15, 2970 Hørsholm E-post sbi@sbi.dk www.sbi.dk Eftertryk i uddrag tilladt, men kun med kildeangivelsen: SBi-anvisning 226: Tagboliger – byggeteknik. (2009) E-bog ISBN 978-87-563-1395-7 5 Indhold Forord ................................................................................................... 6 Indledning ............................................................................................. 8 1 Klimaskærm .................................................................................... 10 1.1 Tagdækning ............................................................................. 15 1.2 Undertag .................................................................................. 17 1.3 Varmeisolering ......................................................................... 23 1.4 Dampspærre ............................................................................ 25 1.5 Inddækninger ........................................................................... 29 1.6 Kviste ....................................................................................... 31 1.7 Ovenlysvinduer ........................................................................ 36 1.8 Skorstene, skotrender og små gennemføringer ...................... 40 1.9 Lodrette facader ...................................................................... 46 2 Konstruktion .................................................................................... 49 2.1 Bygningens bæreevne ............................................................. 50 2.2 Ombygning af eksisterende tagkonstruktion ........................... 55 2.3 Ny tagkonstruktion .................................................................. 64 2.4 Vægge ..................................................................................... 68 2.5 Etageadskillelse ...................................................................... 70 2.6 Brandsikring ............................................................................ 76 2.7 Lydisolering .............................................................................. 92 3 Funktion ......................................................................................... 102 3.1 Boligens indretning ................................................................ 103 3.2 Vådrum og køkken ................................................................ 109 3.3 Adgangsforhold ......................................................................116 3.4 Elevator.................................................................................. 122 3.5 Flugtveje og redningsforhold ................................................. 127 3.6 Parkering og udearealer .........................................................131 4 Indeklima og installationer............................................................. 133 4.1 Temperaturforhold ................................................................. 133 4.2 Dagslys .................................................................................. 135 4.3 Lydforhold ...............................................................................141 4.4 Varme .................................................................................... 143 4.5 Ventilation .............................................................................. 145 4.6 Vand og afløb ........................................................................ 148 4.7 El-installationer ...................................................................... 150 4.8 Føringsveje .............................................................................151 Litteratur ........................................................................................... 155 6 Forord I eksisterende ejendomme kan det være aktuelt at udnytte ubeboede loftrum eller tilføje en ekstra etage med henblik på at etablere tagbo- liger.