What Is The Minimum Length That A Stack Or Vent Pipe Extend Above The Roof?

What Is The Minimum Length That A Stack Or Vent Pipe Extend Above The Roof? Vent pipes shall terminate not less than 6 inches above the roof, measured from the highest point where the vent intersects the roof. EXCEPTION: Where a roof is used for any purpose other than weather protection, vents shall extend at

Can An Air Admittance Valve Be Boxed In?

Can An Air Admittance Valve Be Boxed In? When installation of a Studor® Air Admittance Valve is not feasible in an existing cabinet, the Studor Recessed Box esthetically conceals valves while providing accessibility as required by local codes. The small, low profile box is easy to install and contains a sleek grille for a clean