The flat roof is commonly constructed in reinforced concrete flat stone supported on rolled steel joists r s j bricks tiled etc.
Concrete flat roofs construction.
This cement layer is known as a screed and contrary to popular belief its purpose is not to waterproof the roof.
Joists may be handled with light equipment and they work well with bearing wall construction.
A concrete slab flat roof is normally made up of a structural layer of concrete finished with a smooth screed onto which a water proof layer such as a membrane is laid.
When planning a flat concrete roof you should also decide on what finish you want on it.
Concrete construction the simplest way to construct a roof terrace is by utilising a concrete slab.
Expect the construction of a concrete roof to take a lot longer than a traditional roof since there are many more stages involved.
The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab.
Most concrete roofs follow a similar type of construction.
In a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building.
There are three recognised designs of flat roof construction.
The keystone joist may be obtained in depths of 6 to 18 inches and the tee joists in depths of 8 to 20 inches.
Standard design and method of construction.
Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof.
Flat roof might be of reinforced cement concrete reinforced brick work precast concrete with channel units waffle units and so forth flagstones bolstered on rolled steel joists or jack curve type.
Attractive and economical roof decks can be formed by using prestressed concrete joists in combination with prestressed planks.
A concrete roof is exactly what it sounds like.
There are a number of possibilities ranging from bare.
Exact specifications vary but most concrete roofs are several inches thick.
A roof laid at an angle of under 10 to the event is known as flat roof.
Warm cold and inverted.
The concrete acts as the muscles and flesh on top of it.
A 10 to 15 cm thick slab of reinforced concrete with a thin 2 to 5 cm thick layer of cement on the top.
Types of flat roof coverings flat roofs can be made of a number of materials of which lead is the longest lasting.
Concrete slab flat roofs.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
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 roof should incorporate insulation and usually a vapour control layer to protect from interstitial condensation.