These are simple roof with single slope adopted for shed type of buildings.
Roof ventilation cannot be provided in this pattern.
In this type of roof one wall is higher than another one to give necessary slope for roof.
This is an arched roof providing greater roof space used for store houses.
Used for storage of feed.
Monitor roof
The roof has two slopes, but one overlaps other at the ridge of the roof with a ventilation gap of one feet.
In this roof ventilation can be provided in between two slopes.
This is also suitable for tropical buildings and it serves the purposes of ventilating and lighting the building.
Semi monitor roof : Roof has 2 slopes but one overlap the other at the ridge of roof with ventilating gap of 1 feet.
Gable roof
These are coupled roof with two slopes.
Roof ventilation can be provided in this pattern.
Roofing materials
Pan tiles or Mangalore tiles
Country tiles
They are cheap and easily available in most of the places.
It conducts heat rapidly.
It is suitable for hot climate.
Wind or accident easily damages them.
It has to be renewed periodically.
These are rectangular tiles with grooves on outer surface and two nibs on the inner surface.
They are lied one at the side of the other to cover the roof.
They are cheap and easily available in most of the places.
They conduct less heat.
These are semi-circular tiles of different shape and dimensions.
They are used by keeping one over other in layers forming numerous air pockets acting as insulators.
Asbestos sheet
Aluminum Sheets
These are commonly used in animal buildings.
Asbestos sheets are prepared by mixing cement mixture with varying quantities of vegetable fibers.
They are available as sheets of different dimensions with corrugated surfaces.
Sheets are easily fixed to roof trusses and more durable than tiles.
But the houses under this roof will be hotter during summer.
Corrugated aluminum sheets of different thickness and dimensions are available in the market as roof coverings.They are 2 ½ feet width and varying length from 8 to 12 feet. They are very light and can be easily fixed.
The bright and polished surface of new sheets provides a reflective insulation and keeps the animal houses cool during summer.They are expensive but have a greater resale value.
They are rust proof and therefore they are more durable.They shall be painted black inside and white outside to facilitate better microenvironment inside the animal building.
Galvanized iron sheets
Thatched Roof
These are iron sheets, which are galvanized on the surface and provided with corrugation.
They are available in standard dimension of 6 feet x 3 feet.
Galvanized sheets are commonly used in animal houses but this sheet keeps the house very hot during summer.
It is suggested that sheet should be painted white on outer side to avoid absorption of heat.
They are strong and may be rusted after long use.
This roof is made of either coconut or Palmyra leaves.
Sometimes hay and straw are used as roof coverings.
They are cheap and poor conductors of heat.
They keep the house cool in summer.
They are non-durable and has to be removed yearly or once in two year.
They are very prone for fire accident.
Reinforced Cement Concrete
This roofing material made up of mixture of cement, sand, small cresor stones with iron rods to make solid concrete.
This is very strong and more durable.
This material reduces heat inside the animal shed.
It costs more expensive than other materials.
Source : Tamil Nadu Veterinary and Animal Science University, Chennai
