Preventing Heat-transfer through wall

What are the options for preventing thermal transfer through the Walls?

 Ans-:  

i] Cavity Wall - Cavity walls are twin walls built parallel to each other by keeping a distance of about 100 or 150 mm. The air cavity becomes a good heat insulator and is very effective.

ii] Hollow Blocks - Walls made in hollow blocks are very good heat insulators. Hollow blocks could be of Burnt-Brick type or Concrete blocks. Air is a bad conductor of heat and these cavities retard the heat transfer.

iii] Porous Bricks - Walls made in porous bricks are very good heat insulators. Air is a bad conductor of cavities retard the heat transfer through the wall. 

iv] Thermal Panelling - Wooden or any other kind of panelling can be done on the wall from inside. Adequate use of insulating material like glass-wool or Rock-wool or Thermocole etc are needed to be used. These materials are sandwiched between the wall and the plywood. This method is adopted if the walls are already built.

v] Thermocole Bricks - Thermocole bricks have come in the market lately. Bricks are prepared by encasing Thermocole either in cement or in clay. Walls built with these bricks have effective heat insulation.

vi] Structural glazing or cladding – Wall can be cladded from outside by cladding materials like tinted glass or Aluminium cladding sheets. This cladding material is away from the wall by about 35 mm. This is also heat reflecting material. The air gap and the reflecting nature of the material add up and good thermal insulation is achieved.