• Clean your rainwater goods out of leaves etc. to make sure they run freely without obstruction and are not blocked
• Make sure no seals e.g. around windows are missing
• Paint work should not be flaking off allowing moisture into the background
• Look for leaks in the rainwater goods system
• Condensation can cause a lot of problems consider fitting extractor fans where possible
• Deteriorated paintwork can allow moisture into the background
• Make sure no sections of insulation in the roof space are missing