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aggi in reply to @Airhead

Cheers. So you lay the scrim across the gap and then filler over that?

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Airhead in reply to @aggi

Fill the hole, scrim, cover the scrim with flexible filler. I use flexible filler to fill the hole too.

The flexible filler is noticeably more rubbery than mastic and has fibres in it. At least one of the options has fibres in, not sure if that's the one I linked to.

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