Is there a kind of Mumsnet for DIY?? I need help with a couple of wee jobs

[Pruners]

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Normal decorators filler is fine for that.Leave it until it is bone dry sand and then paint over

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Decorators caulk I think

I would paint and then replace the skirting board (if you're taking them off)

that's quite a big gap to fill

if you are sort of on my level with DIY , you may find it quite a challenge to get it nice and smooth.

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hi pruners, decoraters caulk is what you need

yy

caulk

comes in a tube (like sealant) and you use a gun.

DH has used it v successfully in our house

(screwfix have a message board apparently too)