I have moved into a new house and peeled back the carpet, looking to refinish the floorboards. There is a noticeable gap a the edges where I can see through to under the house (not picked up in the photo). There is no access under the house.
Whilst I know that boards need space to expand and contract, this is excessive and I don't want rodents getting in. How should I approach fixing this gap?
(note I will be getting someone in to finish the floors so if it's something they can do, please still advise on what would be involved so I know roughly how much to budget for)
Many thanks!