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1. Thermal Insulation for Energy
Efficiency in Buildings in India

2.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

3.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

4.  Five Climate Zones in India
 ECBC refers to these and suggest different
compliance for different zones
 Hot – Dry
 Warm – Humid
 Composite
 Temperate
 Cold
 R value Specified for all zones (roofs &
walls)
Climate Map of India
Source: ECBC

5.  Climate map of India
 Heat Flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

6. Heat Load Components:
Composite Climate (New Delhi)
Roof: 31%
Wall: 32%
Windows:
31%
Infiltration: 6%
*Direct heat gain from windows not accounted
Source : BEEP
Summer Heat Flow (May)
Weather Conditions
Temperature Min.: 18.7oC, Max.: 42.6oC,
Avg.: ~32oC
Relative
Humidity
Min.: 13%, Max.: 97%, Avg.:
~50%
Net heat flow per unit area
Roof (15 m2) 24.6 kWh/m2
Wall (47.6 m2) 8.1 kWh/m2
Window (8.4 m2) 43.3 kWh/m2
Infiltration (based on
floor area 15 m2)
5.0 kWh/m2

7. Heat Load Components:
Warm-Humid Climate (Chennai)
Roof: 25%
Wall: 32%
Windows:
36%
Infiltration: 7%
Source : BEEP
Summer: Heat in-flow (May)
Weather Conditions
Temperature Min.: 22.5oC, Max.: 39.5oC,
Avg.: ~31.5oC
Relative
Humidity
Min.: 33%, Max.: 98%, Avg.:
~69%
Net heat flow per unit area
Roof (15 m2) 17.0 kWh/m2
Wall (47.6 m2) 7.3 kWh/m2
Window (8.4 m2) 44.5 kWh/m2
Infiltration (based on
floor area 15 m2)
4.9 kWh/m2

8.  Climate map of India
 Heat flow Trend
 Electricity Consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

9. Air Conditioning
57%Lighting
22%
Ventilation fans
16%
Miscellaneous
5%
Energy Consumption by a general Air conditioned building
Source : ISHRAE
Building Energy Consumption

10. Total Primary Energy Supply & Use – India
(2011)
Coal
43%
Oil and
Gas
29%
Nuclear
1%
Hydro+Sol
ar
2%
Biomass+
Waste
25%
TPES - 750 Mtoe
Source: International Energy Agency

11. Energy demand in the building sector
 The building sector represents 34% of
the country’s final electricity
consumption.
 Electricity use in commercial buildings
has been increasing much faster than in
other sectors of the economy.
 Since 2000, electricity consumption in
the building sector has doubled
Source: Energy Statistics -2012, Ministry of Statistics and Program Implementation,
GoI & French Development Agency Paper 106, Issues in Electricity demand in USA
India Europe and China March 2011; indiatogether.org
11

12.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of Insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

13.  Typical summer day in Composite climate (Delhi)
 With a 50mm Envelop insulation.
Impact of Roof & Wall Insulation
Source : Owens Corning
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
External
Uninsulated
Insulated
Maximum Temperature Difference is 13.9°C @ 14:hrs

14.  School building in a typical summer day in Composite climate (Indore, M.P.)
 With a roof of 40mm insulation with metal cladding
 Up to 6-7oC cooler than ambient
 Up to 4-5oC cooler than RCC
Impact of Roof Insulation
Source : BEEP

15.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of Insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

16. • Stop heat / cold ingress from
outside
• Saves on fossil fuel
• Reduces emission of GHG.
• Lower energy losses; avoid the
danger of oversized heating or
cooling systems that works hard
to compensate for the heat or cold
losses through the building
envelope.
Environmental
• Effective insulation lowers
heating or cooling bills, thus no
longer being affected by rising
energy costs
• Maintains controlled temp. for
longer periods.
Economical
• Human Comfort – improves
the efficiency of occupier/user.
• Provides fungus-free and
microbe-free healthier environ,
due to absence of cold walls
Social
Insulation Benefits

17. Impact of Insulation:
Composite Climate (New Delhi)
Summer: Heat in-flow (May)
Roof: 24.6 kWh/m2
Wall: 8.1
kWh/m2
Source: BEEP analysis
Roof: 2.1 kWh/m2
Wall: 2.3
kWh/m2
Business-as-usual construction
Roof U-value: 4.2 W/m2.K
Wall U-value: 2.1 W/m2.K
ECBC compliant roof & wall
Roof U-value: 0.261 W/m2.K
Wall U-value: 0.44 W/m2.K
Reduction in heat in-flow through roof ∼ 90%
Reduction in heat in-flow through walls ∼ 70%

18.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

19. Fibrous /Mineral Insulation Materials :
•Rock wool
•Glass wool
•Slag wool
Rigid Insulations
•Extruded Polystyrene Foam
•Polyurethane Foam
•Polyisocyanurate Foam
•Expanded Polystyrene Foam
Efficient Insulation Products
PU/PIR XPS
EPS

20.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof Insulation
 Benefits of Insulation
 Types of Insulation
 Application Areas for Insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

21. Roof Insulation (Over deck & Under deck)
Over deck Insulation:
PU Spray Insulation on roof
Over deck Insulation: Extruded
Polystyrene on Roof & Floor
Under deck Insulation:
Extruded Polystyrene
Over deck Insulation: XPS & PUF slabs

22. Wall Insulation (Internal & External)
Spray Insulation-
Interior Walls & Roof
External Wall Insulation with
Extruded Polystyrene
Curtain Wall Insulation Extruded
Polystyrene (External Walls)
Dry Wall
Insulation with
Mineral Wool

23.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

24. Various Application Methods
Floor Insulation Direct to Deck Metal Roof
Spray Foam Cavity Wall Insulation- Extruded
Polystyrene
Inverted Roof Concept
Basement Insulation

25. Various Application Methods
PU External Roof & Wall Spray
Insulation
External Wall Insulation with
Rockwool slabs

26. Various Application Methods
PU External Thermal Insulation Composite System PU Roof Insulation with
water proofing membrane

27.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

28. Case Studies – Buildings Cont…
Net Zero Energy Building,
CEPT University, Ahmedabad
Building
Specs.
Project
Design Team
Scope of Insulation Project
Status
Rating
No of stories:
4
Roof Area:
425 sq. m
Wall Area:
1200 sq. m
Architect:
VasuShilpa
Consultant
Green
Consultant:
CARBSE
Roof– Over deck PUF Spray 45 mm
thick
Wall – Insulation with XPS – 50 mm
First floor : Under deck - Insulation
with XPS – 50 mm
Ground Floor : Over deck -
Insulation with XPS – 50 mm
Civil work
completed

29. Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 4-6;
10000;
13000
Hafeez
Contractor
EDIFICE
CRN
RSP
Multiple Roof– Overdeck
with XPS 75mm
thick
Wall – Insulation
with XPS – 50mm
Operationa
l
LEED
Platinum
Infosys
Campus: Mysore, Hyderabad, Bhubaneswar, Bangalore,
Kochi, Trivandrum

30. Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 17
864
6084
Roof–
Overdeck with
Extruded
Polystyrene
75mm thick
Wall –
Insulation with
Extruded
Polystyrene –
75mm
Operational
GAIL, Noida

31. Case Studies – Buildings Cont…
Sr. No. No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 6;
15000;
26000
TRIL TRIL Roof– Overdeck
with XPS 75mm
thick
Wall – Insulation
with XPS – 25
mm
Operation
al
LEED
GOLD
Tata Consultancy Services,
Gandhinagar

32. Case Studies - Buildings
Sr. No. No. of Stories;
Roof Area
(sq.m);
Wall Area
(sq.m)
Architect Green
Consultant
Scope of Insulation Project
Status
Rating
1 G+1
530.3
Sankalpan
Architects
Pvt. Ltd,
Mumbai
Spectral Roof Insulation
Material – 75 mm
Thick PIR Insulation
Exterior Wall
Insulation (Type 1) -
80 mm Thick PIR
Insulation
Exterior Wall
Insulation (Type 2) -
150 mm Thick PIR
insulation
Complet
ed
Platinum –
the highest
LEED rated
building @
2011
Bayer Eco Commercial Building
Greater NOIDA

33. Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 7;
1300;
3600
Romi
Khosla
Spectral Roof–
Overdeck PUF
Spray 40mm
thick & 40
kg/m3 density.
Wall –External
dry wall
Insulation with
rockwool slab-
50 mm thick &
48 kg/m3
density
Operation
al
Platinum
Eicher HQ, Gurgaon

34. Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consult
ant
Scope of
Insulation
Project
Status
Rating
1 7;
2640;
4685
Dipender Prasad
Architect +CPWD
Kalpakrit Roof– Overdeck
PUF Spray
40mm thick & 40
kg/m3 density
cavity.
Wall – Insulation
with rockwool
slab- 65 mm
thick & 64 kg/m3
density
Operation
al
Platinum &
GRIHA 5
Star
Indira Paryavaran Bhavan, Delhi

35. Case Studies – Buildings Cont…
Sr. No. No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 4;
800;
1200
Mindspace/TERI GRIHA Roof– Overdeck
PUF Spray 40mm
thick & 40 kg/m3
density cavity.
Wall – Insulation
with rockwool
slab- 50 mm thick
& 96 kg/m3
density
Operation
al
GRIHA 5
Star
TERI University, Delhi

36.  Climate map of India
 Heat flow Trend
 Electricity consumption by buildings in India
 Effect of roof insulation
 Benefits of insulation
 Types of insulation
 Application areas for insulation
 Different application methods
 Case studies
 ECBC recommendations on insulation
Content

37.  Maximum U-factor is prescribed for the complete roof assembly.
 Minimum R-value is prescribed for insulation alone (excluding air films)
 Recommendations made for proper placement, installation and protection of
insulation
ECBC Requirements: Prescriptive (Roofs)
Source : ECBC Code

38.  Maximum U-factor is prescribed for the complete wall assembly
 Minimum R-value is prescribed for insulation alone (excluding air films)
ECBC Requirements: Prescriptive (Walls)
Source : ECBC Code

39.  BEE and IPUA (India Polyurethane Association) have collaborated the
establishment of "India Insulation Forum (IIF)“ in 2013. The objective of IIF is
to enhance awareness of using thermal insulation in building envelope and
cold chain industry for energy conservation.
 IIF also coordinate advocacy activities with Government bodies & nodal
agencies.
 IIF is proposed to be represented by reputed companies making different
insulation materials used for energy efficiency in Buildings.
 The IIF membership is open to all concerned with building insulation,
beginning with raw material suppliers, processors & applicators, builders &
contractors, architects, regulators and end users.
India Insulation Forum (IIF)

40. Thank You