Metal Roof On Concrete Block

Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.

Metal roof on concrete block.

A newly developed system now allows roofs to be built from concrete block. Reference table for u values u value is the coefficient of transmission i e the transmission of heat through the materials which compose the building s envelope or outer shell. U value has an inverse relationship to r value. Step 3 placing the steel joists.

The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure. One of the most crucial step in building a flat concrete roof is to figure out the size of the concrete block you will need. The only known roof systems that have consistently survived high category hurricane and tornado velocity winds have been built with structural reinforced concrete decks securely and sufficiently connected to structural reinforced concrete or reinforced concrete block walls. Concrete block reinforced masonry tilt up concrete load bearing walls may be combined with some heavy steel framing.

The concrete blocks are supported by steel joists that make concrete floors and roofs simple and affordable. Roof deck and roof cover systems. Insulated reinforced concrete roof decks. Roof construction is typically heavy steel frames.

The steel joists will provide a strong foundation for the flat concrete roofing. A ledger is a horizontal board that is attached to the top of the the wall. Standard hollow blocks laid on their face and supported between steel joists make a structurally sound roof and far surpasse any code requirements. Metal roofing panels are slippery when wet dusty frosty or oily do not attempt to walk on a metal roof under these conditions.

Always be aware of your position on the roof relative to any roof openings roof edges co workers and penetrations. The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. Wear soft soled shoes to improve traction and to minimize damage to the paint finish.