How to Design Exhaust Pipe Penetrations Through a Wall or Roof

Exhaust pipe thimbles are the cleanest way to handle exhaust pipe penetrations through walls or roofs. Thimbles are designed to isolate the hot exhaust pipe from the structure, and to allow for a better termination at these penetrations. Important: Where the exhaust piping penetrates through a structure made of combustible materials, exhaust pipe thimbles are required by … Read more