18 January 2016 Last updated at 20:09 GMT
Ben Frost, 27, barricaded himself into his girlfriend's flat in Princetown on Dartmoor on 18 January.
He was arrested two hours after breaking through the roof, Plymouth magistrates heard.
Unemployed Frost of no fixed address admitted two charges of causing criminal damage and two of threatening behaviour.
A man who sparked a drug-fuelled roof-top siege after breaking up with his partner has been given a suspended prison sentence.