Clue: New roofer's lad around noon fetching a 22 5? (5,6)
Answer: FOOLS ERRAND
Explanation: Definition: fetching a 22 5?

***(roofers lad) **[anag:*new*] *around*** N** (noon) and &lit.
 

 
*A fool's errand is a practical joke often played on an apprentice (for example, being sent out to buy tartan paint or a long stand or in this case a GLASS HAMMER (solutions to 22dn and 5ac)).