no-fines wall

Hey all, Currently undertaking a complete bathroom renovation, stripping everything back and starting from the bottom up. It's an older wimpy no-fines house so the walls/structure isn't the typical brick or blockworks. The plan is to take down all of the plasterboard walls (the horrific...

Hi. Perhaps a bit obscure: I did not think it possible, but workmen were able to attach wood to the no-fines concrete wall in my home. I may need to do the same. Does anyone know what screws I can use? Possibly a flexible type I think. Thanks. Rich