Indoor sewage odour almost always means trap seal loss, broken SVP, or a redundant pipe left open after renovation. Warm weather expands gas volume so “occasional whiff” becomes unbearable fast.
Darren pressure-tests stacks, checks WC wax rings, and uses camera if walls need opening—masking with air freshener wastes weekends.
If odour started after an extension, mention it when you call 085 175 6277.
Frequently asked questions
Is it carbon monoxide?
Different smell profile—still ventilate and seek help if dizzy, but drains rarely emit CO.
Could HVAC spread smell?
Yes if intakes sit near open gullies—Darren coordinates findings with HVAC techs.
Immediate DIY tip?
Pour water into little-used floor traps; if smell vanishes overnight note which trap.
