Clearing drainage holes

[Azteccamper]

Doing a spring clean after a winter resting under trees and found my roof drain channels blocked. Quick idea found in most households where children have once been!
Undid the air tube from an old plastic air bed foot pump. Perfect fit - just blow and job done.

 

[Alberto]

Brilliant, thanks for the suggestion, small adaptation

 

[ArunAlec]

Brilliant, thanks for the suggestion, small adaptation
View attachment 115405

Don’t do it! You need to be careful not to apply too much pressure as the drain pipes have joins that are simply push fit and can easily come apart. Better use a syringe to suck/dislodge any crud then flush it out.

 

[Viktorgeorge]

Don’t do it! You need to be careful not to apply too much pressure as the drain pipes have joins that are simply push fit and can easily come apart. Better use a syringe to suck/dislodge any crud then flush it out.

I agree, air pressure not ideal by all accounts because of the risks of concealed and hard to access pipe dislocation (a search should soon explain), I use this:

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