ROOF & WALL INSULATION

ROOF AND WALL INSULATION
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CONSTRUCTION MATERIALCONSTRUCTION MATERIAL
SEMESTER PROJECTSEMESTER PROJECT
ROOF & WALLROOF & WALL
INSULATIONINSULATION
COMPOSED BY AWAIS SIKANDAR

ROOF AND WALL INSULATIONROOF AND WALL INSULATION
GROUP MEMBERS:
AWAIS SIKANDARAWAIS SIKANDAR UW-14-CE-BSc-004UW-14-CE-BSc-004
SHAHAB UDDINSHAHAB UDDIN UW-14-CE-BSc-006UW-14-CE-BSc-006
M. WASEEMM. WASEEM UW-14-CE-BSc-003UW-14-CE-BSc-003
UMER ZAHIDUMER ZAHID UW-14-CE-BSc-041UW-14-CE-BSc-041
ANEES KHANANEES KHAN UW-14-CE-BSc-052UW-14-CE-BSc-052
GROUP NO:GROUP NO: 0202

INSULATION:INSULATION:
 Material that retards or prevents the
progressionor transmission
of electricity, heat,moisture, shock, or
sound from one item or
medium 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 or
plastic and is available as sheets
reflective foil laminates, or RFL.

CELLULAR INSULATIONCELLULAR 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 INSULATION
THERMAL PROPERTIES OFTHERMAL PROPERTIES OF
a.a. Temperature limits:Temperature limits: Upper and lower
temperatures within which the material
must retain all its properties.
b. Thermal conductance "CThermal conductance "C
The 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 CHEMICALMECHANICAL AND CHEMICAL
PROPERTIES OF INSULATIONPROPERTIES OF INSULATION
a.a. Alkalinity (pH) or acidity:Alkalinity (pH) or acidity:
Significant when moisture is present.
b. Breaking loadb. 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 INSULATIONMAJOR INSULATION
MATERIALSMATERIALS
CALCIUM SILICATECALCIUM SILICATE
Temperature range covered is
35°C to 815°C
 water absorbent
 non-combustible
MINERAL FIBERMINERAL FIBER
Glass :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 CEMENT
IMPORTANCE 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 from
animals and weather,
DESIGN ELEMENTSDESIGN ELEMENTS
• the material
• the construction
• the durability
SHAPES 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 roof
Supporting structure and its
Outerskin
ROOF INSULATION:ROOF INSULATION:

SOLAR ROOF:SOLAR ROOF:
Solar shingles which
generate electricity as well as
cover the roof
Generate electricity, recover
Thermal energy, and also act as
a roof covering.

DEPTH OF ROOFDEPTH OF ROOF
INSULATION:INSULATION:
The recommended depth
of 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:
ADVANTAGESADVANTAGES
Straightforward
Use 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 cork
Excellent for insulating roof
conversions
High insulating value per unit
thickness.
DIS ADVANTAGES:DIS ADVANTAGES:
Some boards come with their own
system of attachment.
Synthetic sheet insulation materials
use large amounts of Energy.

BLOWN-FIBRE ROOF INSULATION:BLOWN-FIBRE ROOF INSULATION:
Quick and easy to install
Ideal 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 ROOFDIS-ADVANTAGES OF ROOF
 The principle disadvantage
of adding insulation is do
finish up losing space.
Minimize the number of space that
you'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 INSULATED
ROOFS:ROOFS:
Poorly insulated and ventilated
roofing can suffer from
problems such as the
formation of ice dams
causing 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 to
defensive walls and ramparts
BUILDING WALLSBUILDING WALLS
support roofs, floors and ceilings.
PARTITION WALLSPARTITION 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 WALLINTERNAL WALL
Fixing an insulation board to
the walls covering it with a
vapour barrier layer and
plasterboard.

 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 WALLEXTERNAL WALL
External insulation involves
fixing 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 ONINSULATION ON
DIFFERENT EXTERNALDIFFERENT EXTERNAL
WALLS:WALLS:
WEATHER BOARDWEATHER 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 foam
moisture 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 externalSolid wall with external
polystyrene andpolystyrene 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 than
0.30 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

ROOF & WALL INSULATION

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