You can contact with roofer he can guide either this will done by a gas engineer or by a roofer. As if I have any issue related my roof I always contact
Residential Roofers in Austin, they always suggest for the best.
Oh, Thank you so much for the suggestion. Actually, I had the same issue with my kitchen roof 3 years ago but I contacted Austin Roofers even I contacted many Roofing Company in Austin for this issue they came and inspected then they found the main area where my roof leaked and they replace that...