If metal roof then similar to above, then at least higher end cost or above depending on roofing materials - (about $1200-2000) unless roofing panels are also damaged, not just ridge vent / cap.
1 Work the soap into a lather all over your hands, scrubbing the skin under and around your nails as well. 2  If you still smell gasoline on your hands after washing them with soap, mix a few drops of vanilla extract with water and rub it into your hands to reduce or eliminate the smell.
1 Set the gas-control knob to the Off position and turn the thermostat to its lowest setting (typically clockwise in both cases). Wait 5 minutes for any gas to clear. If after 5 minutes you smell gas, do not proceed. Call the utility company for immediate service. 2 Open or remove the outer and inner access covers for the burning chamber using a wrench or pliers.