Thermal Insulation of Home


Thermal insulation is a method to reduce the transfer of heat from outside to inside. To make house heat proof, thermal insulation is a good choice. An insulated home is more comfortable as the temperature remains consistent over weather changes. It makes the house comfortable and keeps the temperature of   house cool in summers and warm in winters. It is very useful to keep the temperature of the house independent from outside temperature.


General Principles of Thermal Insulation

• Thermal resistance of an insulating material depends on the type of material and the thickness.
• Provision of an air gap is very important and useful insulating agent.
• Orientation of the building has important role in thermal resistance.
• The building/house design is done in such a way so that entry of solar energy in summer should be minimum and in winter it should be maximum.

Choice of Insulating Materials

Choice of insulating material depends on following considerations.
• Cost of insulating material.
• Area to be covered for insulation.
• Standard of insulation to be required.
• Cost of energy consumed for heating and cooling.
• Reasonable fire proof
• Non absorbent of moisture
• Not liable to undergo deformation
• Resistant to attack of small insects

Insulating Material

1. Rock wool.
2. Slag slabs
3. Mineral wool slabs
4. Aluminum foils
5. Cement concrete block with lightweight aggregate.
6. Gypsum board
7. Asbestos cement board
8. Clip board
9. ACC cement board
10. Chip board
11. Foam glass
12. Gasket cork sheet, foam plastic etc.


How to apply insulating material

Apply CPRX compound of Shalimar Tar Products (STP) on ceiling of roof.  For fiberglass or glass wool insulation, you can fix 2" thick pieces. For Thermocol or rubber foam, you can fix 2'X2' pieces. These can also be fixed into wooden frames 2' X2' size. Finally, cover the treatment with 24 gauze perforated aluminum panel.


How Thermal Insulation is Beneficial

 Comfort: The temperature of the room remains cool in summer and warm in winter than that of outside atmosphere. Therefore, by providing thermal insulation one feels comfort both in summer and winter season.
 Fuel saving: Fuel is required to maintain desired temperature of the room. By providing thermal insulation, the transfer of heat/cold reduces between inside and outside of the room.. Hence, it saves fuel.
Condensation Resistant: Thermal insulation materials fixed on inside surface of the room walls prevent condensation on interior walls and ceiling. Condensation is deposition of moisture and takes place when warm air comes in contact of surface having temperature below dew point.

Thermal Insulation of Exposed Walls

The heat and cold radiate through exposed walls of the house. There are following methods of thermal insulation of exposed walls.
1. You may provide suitable thickness of wall.
2. You may provide Hallow wall or cavity wall.
3. You may fix Hardboards or ply board on wooden batten over the wall for creating air space.
4. You may fix Thermal insulating material sheet inside and outside exposed wall to reduce heat/cold transmission.
5. You may construct outer wall with thermal insulating material if you have frame structural building or non-load bearing walls.


Thermal Insulation of Exposed Doors and Windows

Outside doors and windows transmit heat/cold through the room from atmosphere. The methods providing thermal insulation are following.
1. The frames of doors and windows are of wood.
2. You should not use Iron or pressed steel frames as they transmit more heat and cold than that of wood.
3. You may fix Insulated glass in glazed doors and windows.
4. Double glass with air space provided on glazed door will reduce transmission of heat/cold from outside to inside.
5. You may provide sunshade projection on doors and windows to protect them from heat and rain.
6. You may use Curtains, ventilation blends etc. on exposed doors and windows.

Thermal Insulation of Exposed Roof

The roof of the one storey building or top roof of multi storey building is an exposed roof. Heat/cold transmits through exposed roof in the building. There are two types of treatment for thermal insulation of exposed roof by providing treatment at the bottom or top of roof slab.

a) Internal Treatment:

1. You can treat both types of slabs both types of slabs either flat roof or pitched roof.
2. You should provide Air gap for under exposed surface of roof by fixing false ceiling under the roof.
3. Ventilation abutting the roof also helps for passing the heat out of the room.
4. You should install false ceiling with thermal insulating materials.
5. You may paste suitable adhesive and sealers at inside surface of the exposed roof for fixing Light insulating materials. Some insulating materials are glass wool, fiber glass wool, mineral wool, thermocol, rubber foam etc.

b) External Treatment:

 Suitable shade may be provided on exposed top surface of the roof for reducing solar radiation.
2. Shining and heat reflecting coating may be applied on the top of exposed roof like paint.

3. These coatings can serve dual purpose of water proofing and heat reflection.
4. In case of flat roof you can create air space on top of roof by placing asbestos sheet on brick pillars.
5. The surface temperature of flat roof may be reduced by sprinkling water on roof at regular intervals during hot hours.
6. The surface of flat roof may be kept cool by storing water on roof.
7. ‘Mud Phuska’, which is a mixture of clay soil, wood shaving, and water, should be laid on exposed roof acts as thermal insulation.
8. The earth laid under tile terracing on top roof also serves the purpose of thermal insulation and helps in giving proper shape for drainage of rain water.   



59  Comment(s)
12Next  >>
abhijeet pawar
By abhijeet pawar -  On  10/19/2015 4:01:43 PM
Hi, We stay in Mumbai. Currently the weather here is very hot and top it up..we stay on the top floor. Which get heated up quickly and room stay heated most of the time..Even A/c doesn't prove helpful sometimes. We are thinking of insulating the room and also do some structural change. We stay in a 1RK flat which comes arround 300 sq/ft area. However, the kitchen is quite spacious. Therefore, thinking of converting it to a bedroom and the bathroom to compact kitchen and the divide the toilet into a mini bathroom and toilet..There is a sufficient space to do it.
We are also close to highway, therefore, it very dusty as well. Also would like to know how can we make the house more dust free.
Kindly let a quote for the same.
By Anonymous - On 2/23/2015 12:44:26 AM
This is good article. I would like to understand if a thick cloth is used to cover the entire roof top of a house, can we reduce temperatures inside house to normal
By Anonymous - On 2/23/2015 12:42:09 AM
This is good article. I would like to understand if a thick cloth is used to cover the entire roof top of a house, can we reduce temperatures inside house to normal
SK Mittal
By SK Mittal -  On  2/10/2015 12:09:44 PM
I wish to provide heat insulating material like thermocole over which brick bat coba is to be done for waterproofing. Can someone suggest the sequence of layers to be done.
Manoj Dosi
By Manoj Dosi -  On  10/12/2014 12:20:32 PM
Pl send 1. thickness of layer of Mud Phuska ,
2. composition , and 3. specifications of bricks, mortar for laying these bricks ,

to be laid on top of the mud phuska .. for heat insulation .
By Anonymous - On 8/14/2014 12:48:10 PM

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Sheet, Cement Sheet And Asbestos Corrugated Shingle
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New Generation of

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Steel Roofing Sheet
By S.K.LAHIRI -  On  8/4/2014 4:43:01 PM
Can any one suggest whether EXTRUDED (not EXPANDED, which in layman's term is thermocole etc)POLYSTYRENE sheet for roof thermal insulation is available at India. This system is normally used with geo-textile sheet and fixed as stand-alone.
If available - what is the cost and who are the supplier?
By Anonymous - On 6/30/2014 12:05:06 PM
Please contact me at +91 9035006905
We are the international manufactures of thermal & acoustic insulation
By Anonymous - On 4/29/2014 7:30:35 PM
If we construct a house of cement bricks, it is more hot, then how to insulate it??
By Anonymous - On 7/29/2013 1:45:20 PM
Salaam to every i have one question about plastic cilling under Rcc we made rcc slab than plastic cilling, so there is alot of WATER inside the cilling,so what we do with this problum.
By Anonymous - On 5/19/2013 11:10:02 PM
sir kindly tell me detail for thermal insulation abt the sizes of wall brick and which material used in it
By Anonymous - On 5/6/2013 9:00:27 PM
Good article
By pkpatnaik -  On  3/27/2013 6:03:07 PM
what should be construction cost upto plinth level,my contractor rate is rs1250per sqft for three storied building,my plinth area is1250sqft each floor, pl reply.
By Anonymous - On 8/31/2012 12:33:58 PM
Can we use ceramic tiles in place of brick tiles in mud phuska ?

Please advice.
By Anonymous - On 5/18/2012 4:01:14 PM
The thermal insulation suggestions gvn abv,for roof tops externally, don't seem to be 'load bearing' or to say, capable of taking foot movements,like 'roof top parties',etc. Pl suggest smthng wch cud be water-prf, heat insulating, and tread-bearing also. It has to be multiple layered, each lyr contributing to one of abv reqmt.
By Anonymous - On 4/5/2012 7:19:58 PM
WHAT BRAND.? FIND IN TURKEY. WHAT PRICE. What is the application technique. ?
By Vivek -  On  3/11/2012 5:12:30 PM
Pl tell for each Material the Insulation coefficients of 5CM thickness & Rough Cost per Squar Foot.
Also various Options in Colour & textures of Surface
By Anonymous - On 2/25/2012 10:51:35 AM
This is a perfect article for the basic heat thermal insulation for a differnt types of roofs and wall of a building so that a common man can also afford for such type of arrangement and specially at this time when there is acute shortage of power suuply and high price rise of eelctricity.A good and useful article.
By Anonymous - On 2/24/2012 8:58:47 AM
Good article. Thanks for sharing
By EDWARD -  On  2/22/2012 10:57:30 PM
very interesting and knowlagable and very useful article
By Anonymous - On 12/27/2011 12:14:24 PM
ya the article i found useful .If other tardaional and less expensive insulating materials list and method of application include it will make it more benifical to the reader and prationer. thanks
By Anonymous - On 12/27/2011 12:13:30 PM
ya the article i found useful .If other tardaional and less expensive insulating materials list and method of application include it will make it more benifical to the reader and prationer. thanks
By Anonymous - On 12/1/2011 2:15:23 PM
foam glass bonding on concrete surface methods
By Anonymous - On 11/24/2011 3:43:20 PM
hi this is very helpful article will you please tell me about detail drawing of water tank
By sanjay -  On  6/13/2011 3:02:22 PM
I am planning to install a home theatre system in my house in a room dedicated for this. I would like to receive some advice on room acoustics on walls, lighting ideas.

Also i would like to know any of the person/ company in navi mumbai who can help fit and tune the system and who has contacts with associated functions like carpentry, LED lighting persons, a/c installation, plaster of paris on one wall for projection screen, etc.

Any suggestions welcome and appreciated very much in advance with thanks.
By Anonymous - On 4/19/2011 4:39:21 PM
very helpful.Thank you. once our bldg structure is in place. I plan to get this done
By Anonymous - On 2/20/2011 3:56:56 PM
Incontries like India and pakistan, you should something economical i,e which serve you more puposes . For exapmple to make insultion for your roof slab just insert 2" earthfill between the polytheen sheet and levelling sand over the concrete slab and then brick tile. This earthfill will serve as an insulation material also you can use top of roof for daily houshold activities
By Anonymous - On 1/27/2011 12:58:47 PM
Pl send all tips about house construction
By shaik -  On  1/20/2011 5:32:45 PM

can u please give me an idea to built a livingroom and bedroom with attach bathroom in 27*27fts
By Anonymous - On 12/16/2010 9:41:50 AM
please send me some images for living room arch designs.

Yugandhar Reddy
By Anonymous - On 11/28/2010 2:28:28 PM
very useful info
By Anonymous - On 11/5/2010 8:56:03 PM
hi how are ya hi how are ya!!!
By Anonymous - On 10/30/2010 2:18:57 PM
Very much helpful.
By saisreehari -  On  10/11/2010 12:57:11 PM
this article is very useful
By sharana25 -  On  9/15/2010 5:11:38 AM
This is very useful article,most of the people forget this during house constrction specially from high temp locations.
By Anonymous -  On  8/1/2010 10:30:15 AM
The article is helpful but the merits and demerits of each method also should be discussed.Only one aspect is considered here and when one person build a house he is to see it in totality.So an article should consider this
By mukeshsamania -  On  7/30/2010 12:22:02 PM
Will you please tell me about detail drawings. staircase, swimming pool, water tank
By sarita -  On  6/26/2010 3:44:30 PM
this article is very beneficial
By Anonymous - On 6/9/2010 12:52:05 AM
hi salena
By Anonymous - On 6/9/2010 12:51:50 AM
hi salena
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