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.