CHAPTER 9 ROOF

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ROOF FINISHES METAL ROOFING CONCRETE FLAT ROOFING CONCRETE TILES ROOFING


ROOF FINISHES DEFINITION

 Roof- an overhead covering of a building with its framework support.  Roof finishes- an assemble of manufactured pieces of hard-wearing material on the framework support to protect internal spaces from the climatic changes. TYPES OF ROOF FINISHES

   

Metal Concrete Concrete tiles Fibreglass


METAL ROOFING  Is a roofing system made from galvanized metal pieces or tiles.  Often corrugated or otherwise shaped.  Types of metal roofing materials:  Corrugated galvanized steel (wrought iron/steel sheet coated with zinc)  A blend of Zinc, aluminum and silicon coated steel. (Zincalume, galvalume)  Metal tile sheets  Stainless steel.  Aluminum  Copper


Advantages:

METAL ROOFING

       

Lightweight Portable Durable Long span construction Weather resistance Design flexibility Recyclable Energy efficiency

Disadvantages:  Expensive  Corrosion due to incompatible material  Requires a good deal of craftsmanship  Great care  Regular maintenance


CONCRETE FLAT ROOFING

 horizontal roofing with slight inclination (10 degrees)  made from different materials and substances (asphalt built up roof (BUR), modified bitumen, Hypalon, PVC, TPO and EPDM synthetic rubber)  requires continuous membrane roofing material  Roof slope can be achieved by: inclining structural members or roof deck, or by tapering layer of thermal insulation  Slope usually leads to interior drains/ perimeter scupper


CONCRETE FLAT ROOFING

Advantages:  Flexible  Affordable  Durable  Low maintenance  Quick construction  Weather resistance Disadvantages:  Heavy construction  Not aesthetically appealing  Requires a good deal of craftsmanship  Leakage


CONCRETE TILES ROOFING

 Concrete roof tile is made of sand,

cement, and water.

 Concrete roof tile has three main

appearances based on their profiles:  Flat Profile  Low Profile  High Profile

 Available in several different colours

and textures.

 Applicable in any climatic condition.  Local manufacturers- Redland,

Monier ,etc

 Imported from Vietnam, Thailand

and Indonesia and Taiwan.


CONCRETE TILES ROOFING

Advantages:  Variety of colours, tones and textures  Affordable  Durable  Low maintenance  Good aesthetic value  Weather resistance Disadvantages:  Heavy  Breakable, if not properly installed  Requires a good deal of craftsmanship  Leakage


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