I've got some quite large gaps between my original Victorian floorboards. How can i fill these as there's a huge draft coming through them?

Best option would be to fill the gaps with strips of reclaimed pine. Then you would need to sand an seal the floor. There are mastic fillers available on the market but they shrink with time and open up.

Sawdust (to match your floorboards,pine oak etc.....)mixed with waterproof PVA glue. You only need a little bit of glue just enough to bind the dust together. Works a treat. Mix it to a thick paste,then get an old credit card and apply it in gaps.....scrape off excess. Quick sand down when dry(if needed). Nip down to your local joiners for your sawdust. dwpcutler.............it was a carpenter/joiner friend of mine (a trading standards approved one by the way) who told me this tip,he's been doing this method for 20 years and never had a problem.......not bad for a 'quick fix idea that won't last'.............maybe you should try it ;) UPDATE: Gaps almost 60mm wide????????!!!!!!!!!!!! That's not a gap that's a missing floorboard! ;) In that case then you will need timber to fill those,i class a gap in floorboards around 5mm :/

the option of glue and sawdust is not good i agree with dwp

Starlets comment is the right way to go. Do it properly now and its never a problem again. Too many quick fix ideas around now that wont last !

Do not use pva!!!!!