While some minor damp issues can be addressed with DIY solutions like sealants or moisture absorbers, not all damp problems can be effectively treated this way. For severe cases, especially those involving structural issues, professional intervention is often necessary. It’s crucial to understand the limitations of DIY methods and when to seek expert help. Using the wrong treatment can exacerbate the problem and lead to more significant damage in the long run. Always consult with professionals for a thorough assessment before attempting any DIY damp proofing.