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Polyfilla vs gypsum, which is tougher?

(7 Posts)
jfdusdjfdn Tue 15-Mar-16 15:00:56

Is polyfilla just gypsum with another name? I want to fill the gaps between my floorboards (which will then be painted), I've already packed out the gaps with corrugated cardboard glued in position. I want to just 'wipe' a top layer of filler into the gaps to make them nice for painting. I know gypsum isn't really tough but if it's recessed slightly would it be ok, or would polyfilla be a better choice? I don't want to use that 2-part resin filler. I accept both will crack a bit here & there with movement.

BatteryOperatedBoyfriend Tue 15-Mar-16 15:01:59

Could you use some kind of paintable sealant, it will flex with the boards and not crack.

jfdusdjfdn Tue 15-Mar-16 15:10:33

Not sure how well painr would adhere to sealant but it's also very messy to apply. I prefer filler for a neat finish.

PigletJohn Tue 15-Mar-16 17:16:02

they are not the same, but neither is suitable for floorboards as they will crack and crumble.

Caulk might do, and you can paint it.

BatteryOperatedBoyfriend Wed 16-Mar-16 14:59:31

I've never been able to paint caulk, I have dark areas all over my house where I have used caulk and not been able to paint over it, the paint splits. I then use a different paint which does adhere but leaves a darker finish than the rest.

jfdusdjfdn Wed 16-Mar-16 15:16:10

Well, on piglets advice I'm trying caulk. I'll report back how it goes. I think/hope the key to painting will be to ensure the caulk is properly dried out first.

PigletJohn Wed 16-Mar-16 15:59:59

silicone sealant might do, if you choose a colour similar to the finished colour of the floor, or darker.

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