ROOF & WALL INSULATION

ROOF AND WALL INSULATION

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CONSTRUCTION MATERIALCONSTRUCTION MATERIAL SEMESTER PROJECTSEMESTER PROJECT

ROOF & WALL ROOF & WALL

INSULATIONINSULATION

COMPOSED BY AWAIS SIKANDAR

COMPOSED BY : AWAIS SIKANDAR

ROOF AND WALL ROOF AND WALL INSULATIONINSULATION

GROUP MEMBERS:AWAIS SIKANDAR AWAIS SIKANDAR UW-14-CE-BSc-004UW-14-CE-BSc-004SHAHAB UDDINSHAHAB UDDIN UW-14-CE-BSc-006UW-14-CE-BSc-006M. WASEEMM. WASEEM UW-14-CE-BSc-003UW-14-CE-BSc-003UMER ZAHIDUMER ZAHID UW-14-CE-BSc-041UW-14-CE-BSc-041ANEES KHANANEES KHAN UW-14-CE-BSc-052UW-14-CE-BSc-052

GROUP NO:GROUP NO: 02 02

composed by: Awais Sikandar


INSULATION:INSULATION: Material that retards or prevents the

progressionor transmission of electricity, heat,moisture, shock, or sound from one item ormedium to another is called insulation.

Assist mechanical systems in meeting criteria In food and cosmetic plants.

Reduce emissions of pollutants to the atmosphere


TYPES OF INSULATION:TYPES OF INSULATION:BULK INSULATION:BULK INSULATION:materials such as glass wool, wool,cellulose fibre, polyester and polystyrene. REFLECTIVE INSULATION:REFLECTIVE INSULATION:Reflective insulation is usually shiny aluminium foil laminated onto paper orplastic and is available as sheets

reflective foil laminates, or RFL.


CELLULAR INSULATION CELLULAR INSULATION small individual cells separated from each other. GRANULAR INSULATION:GRANULAR INSULATION:composed of small nodules which may contain voids or hollow spaces.FIBROUS INSULATION:FIBROUS INSULATION: composed of small diameter fibers which finely divide the air space


PROPERTIES OF INSULATIONPROPERTIES OF INSULATIONTHERMAL PROPERTIES OF THERMAL PROPERTIES OF INSULATIONINSULATIONa.a. Temperature limits:Temperature limits: Upper and lower

temperatures within which the material must retain all its properties.

b. Thermal conductance "CThermal conductance "CThe time rate of steady state heat flow through a unit area of a material

c. c. Thermal resistance "R":Thermal resistance "R": Resistance of a material to the flow of heat


MECHANICAL AND CHEMICAL MECHANICAL AND CHEMICAL PROPERTIES OF INSULATIONPROPERTIES OF INSULATIONa.a. Alkalinity (pH) or acidity:Alkalinity (pH) or acidity:

Significant when moisture is present.b. Breaking load b. Breaking load This factor is

however most significant as a measure of resistance to abuse during handling.

c. c. Combustibility:Combustibility: One of the measures of a material's contribution to a fire hazard.


MAJOR INSULATION MAJOR INSULATION MATERIALSMATERIALSCALCIUM SILICATECALCIUM SILICATETemperature range covered is

35°C to 815°C water absorbent non-combustible MINERAL FIBERMINERAL FIBERGlass :Glass : Sound absorption qualities.Temperature range is -40°C to 232°C.


.

Rock and Slag:Rock and Slag: Excellent fire properties Upper temperature limit can

reach 1035°C. CELLULAR GLASSCELLULAR GLASS Temperature range is -273C to 200°C Material is non-combustible,

non-absorptive and resistant to many chemicals.


EXPANDED SILICA, OR PERLITEEXPANDED SILICA, OR PERLITE INSULATING CEMENTINSULATING CEMENTIMPORTANCE OF INSULATION:IMPORTANCE OF INSULATION: LOWER ENERGY COSTS: INCREASE COMPORT REDUCE NOISE POLLUTION HEALTHY HOME HEALTHY

ENVIROMENT:


ROOF INSULATION:ROOF INSULATION:ROOF:ROOF:A roof provides protection fromanimals and weather, DESIGN ELEMENTSDESIGN ELEMENTS• the material• the construction• the durabilitySHAPES OF ROOFS:SHAPES OF ROOFS: Roofs

are flat, skiliTon, gabled, hipped,arced and domed


PARTS OF ROOF:PARTS OF ROOF:There are two parts to a roofSupporting structure and its OuterskinROOF INSULATION:ROOF INSULATION:


SOLAR ROOF:SOLAR ROOF:Solar shingles which generate electricity as well as cover the roofGenerate electricity, recoverThermal energy, and also act asa roof covering.



DEPTH OF ROOF DEPTH OF ROOF INSULATION: INSULATION: The recommended depthof blanket style insulation

(glass or mineral wool) for a roof is 250 to 270

mm.


TYPES OF ROOF INSULATION:TYPES OF ROOF INSULATION:There are several different types of roof insulation BATT OR BLANKET INSULATION: BATT OR BLANKET INSULATION: ADVANTAGESADVANTAGESStraightforwardUse recycled glass or sheep’s wool Good for insulating accessible spaces DISADVANTAGES:DISADVANTAGES:Sheep’s wool is a more expensive and is more irritative


SHEET ROOF INSULATION:SHEET ROOF INSULATION:ADVANTAGES:ADVANTAGES:Greener insulation options include corkExcellent for insulating roofconversionsHigh insulating value per unitthickness.DIS ADVANTAGES:DIS ADVANTAGES:

Some boards come with their ownsystem of attachment.Synthetic sheet insulation materialsuse large amounts of Energy.


BLOWN-FIBRE ROOF INSULATION:BLOWN-FIBRE ROOF INSULATION:ADVANTAGESADVANTAGESQuick and easy to installIdeal for insulating areas where access is difficult.Light and convenient to handle and cut.DIS ADVANTAGESDIS ADVANTAGES• Can be more expensive than other

types of roofs insulation.• Not recommended for insulating

draughty roofs.


Blanket insulation comes in roles and is fairly easy to install in your roof yourself


Sheet or board insulation is a good choice for conversions


BLOWN-FIBRE ROOF INSULATION:BLOWN-FIBRE ROOF INSULATION:

You'll need to employ a professional to install blown-fibre insulation in your roof.


• ADVANTAGES OF ROOF INSULATION:ADVANTAGES OF ROOF INSULATION:

• Reduce gas & electricity bills• Reduce your home's carbon

footprint• Keep your house warmer in

winter• Keep your house cooler in

summer• Prevent internal condensation• Improve your

home's energy efficiency rating• Reduce noise from outside (e.g.

traffic)


DIS-ADVANTAGES OF ROOF DIS-ADVANTAGES OF ROOF INSULATION:INSULATION: The principle disadvantage of adding insulation is dofinish up losing space.Minimize the number of space thatyou've got. Some styles of insulation,particularly cheaper kinds that is self-laid, could be irritating to skin, and even result in allergies or worsen conditions such as asthma


POORLY INSULATEDPOORLY INSULATEDROOFS:ROOFS:Poorly insulated and ventilated roofing can suffer from problems such as the formation of ice damscausing water from melted snow on upper parts of the roof


• WALLS INSULATION:WALLS INSULATION:• WALLSWALLS• An structure of brick, stone,

etc., that surrounds an area or separates one area from another.

FACES OF WALL:FACES OF WALL:• INTERNAL FACE OF WALLINTERNAL FACE OF WALL• EXTERNAL FACE OF WALLEXTERNAL FACE OF WALL


KINDS OF WALL:KINDS OF WALL:DEFENSIVE WALLS:DEFENSIVE WALLS:The word wall originally referred todefensive walls and rampartsBUILDING WALLSBUILDING WALLSsupport roofs, floors and ceilings.PARTITION WALLS PARTITION WALLS Purpose of separating rooms, or dividing a room. Not load-bearing. Constructed of steelpanels, bricks

or blocks


• BOUNDARY WALLS: BOUNDARY WALLS: • Boundary walls include

privacy walls, boundary-marking walls on property

• BORDER WALLSBORDER WALLS• Some walls are designed

to formally separate the border between one population and another.


INSULATION OF WALLS:INSULATION OF WALLS:

INTERNAL WALL INTERNAL WALL INSULATION:INSULATION:Fixing an insulation board to the walls covering it with a vapour barrier layer and plasterboard.



ADVANTAGESADVANTAGES May be easier to accomplish,

especially one wall at a time Ideal to do when decorating Cheaper than external insulation.DIS ADVANTAGESDIS ADVANTAGES There is a loss of internal space It is disruptive to residents The heat storage value of the wall

is lost



EXTERNAL WALL EXTERNAL WALL INSULATIONINSULATIONExternal insulation involvesfixing insulating materials such as mineral wool or expanded polystyrene slabs to the outer surface of the wall


ADVANTAGES:ADVANTAGES:– Improves weather protection– Provides noise insulation– Any gaps and cracks in

the wall, or poor rendering, are covered up

– Air tightness can be better preserved


INSULATION ON INSULATION ON DIFFERENT EXTERNAL DIFFERENT EXTERNAL WALLS:WALLS:WEATHER BOARD WEATHER BOARD WALLS:WALLS:Perforated reflective foil and bulk insulation under weatherboard.


.

BRICK VEENER WALLS:BRICK VEENER WALLS:Reflective foil under brick veneer.Brick veneer with foam board:Brick veneer with foam board:Suitable materials include polystyrene boards, high density rockwool batts, and foil faced polystyrene boards


• SOLID WALLSSOLID WALLS• Solid walls include concrete block,

concrete panel, stone, mud brick, rammed earth (pisé) and solid brick construction without a cavity.

Solid wall with internal foamSolid wall with internal foammoisture barrier.moisture barrier.Suitable materials include polystyrene boards,Bulk batts, and foil faced foam boards with a still Air layer of at least 25mm each side.


Solid wall with external Solid wall with external polystyrene and polystyrene and renderrender..• On external walls,

polystyrene can be clad with an external finish, such as render.

• No additional waterproofing is required.


CONCLUSION:CONCLUSION: Walls should have a U-value(THERMAL TRANSMITTANT) of less than0.30 W/m2K to meet Building Regulations Around 120mm of insulation will usually achieve by this. Insulating external walls can save on average between £450 and £500 a year on heating costs


Engineering

ROOF & WALL INSULATION