DIY Damp proofing – Can I do the damp proofing myself? The million dollar question! Many DIY damp proofing enthusiasts are now “having a go” at diy damp proofing walls themselves with mixed results. With a wealth of information and products easily accessible and a trying economic climate, the DIY damp proofing approach seems simple in principle. However the mis-diagnosis of the cause of damp in structures and the wrong product for the site conditions can turn a relatively straight forward damp proof job into a recurring problem.