We got a solid oak floor laid in April. There is a small gap between the skirting boards and the floor (though it's a fairly visible gap in one area - it's an old house and the original floor is uneven). What would be an appropriate sealant to fill these gaps? The floor layer said not to seal them but - and I'll be honest here - there's been a couple of bloomin spiders get in under the gaps and being absolutely phobic about spiders - I say fill the spaces!!!! Would appreciate guidance in an appropriate sealant before I go and shove either cauk or silicone in it!!!