Concrete Flat Roof Thickness

Exact specifications vary but most concrete roofs are several inches thick.

Concrete flat roof thickness.

A concrete roof is exactly what it sounds like. Flat roofs come in many shapes and sizes which include parapet roofs roof decks and green roofs to name just a few of the options available. A solid slab of concrete capping the top of your house. The roof needs to be thick in order to provide insulation and proper protection.

The steel joists will provide a strong foundation for the flat concrete. The flat concrete roof itself can be up to 7 inches thick although the greater the thickness the more the concrete will need be poured in increasing numbers of layers with each one needing to dry before the next is poured. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. If reinforced concrete were to be reused strong connections would have to be made between roof and walls.

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. There are a number of quinn therm roof insulation boards which will suit a warm deck flat roof construction built with a concrete deck each with different facings. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. Reinforced concrete slabs are heavier and generate higher seismic forces in an event.

The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab.