floorboard gaps

[junglejim01]

I'm preparing to carpet some rooms with original wooden floorboards. The boards are ok but there are a few nicked edges and gaps up to about 15mm. We're going to lay a decent underlay but i'm wondering if i should be preping the gaps in any way or whether the underlay/carpet will ride over them.
Any advice appreciated. Many thanks

 

[wrightwoodwork]

I think I would anyone walking in high heels could maybe put a heel in the gap you could use a wood filler if not too many or lay and nail hardboard to the floor

 

[gregers]

i too would be overboarding using pre stressed hardboard sheets.