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Ground Moisture Barrier under existing house– E.g. approximately 60m2 coverage

I have a 1960sa house that needs to meet healthy homes Standards. I need to install a ground moisture sheet in the basement area. Photos attached of this. Grant is relatively lumpy with rocks – I'm hoping we can work with this. there is plenty of head room generally and it is quite accessible. It will require approximately 60m2 coverage. In You have some experience of the sort of work please let me know Estimated price to get this done including supply of materials that would be appreciated. Kieran Dolan.