The walls of the house are based on the cavity wall construction where you have a gap of at least 4 inches between the outer and the inner walls.
There are mainly two types of structure used for inner walls of the house, they are concrete or stud walls. Concrete inner walls are usually used in Concrete homes and even though you can use stud walls in these types of construction, they are often used in Timber Framed Homes. Depending on the Types of Construction you go for, there are obviously other methods that can be applied.
As far as the exterior walls for most types of construction, you will find that they are usually the same. As a matter of fact if you look at a concrete and a timber framed construction from the outside, you will not be able to see any difference in them.
When you start the construction of the walls, you will get to a certain height that the block layers are no longer able to carry on without a proper scaffolding.
Scaffoldings have to be put up in a proper and safe manner. This is not something that you can do yourself, so get the professionals in to do this for you. They would know about the health and safety side of things and they would make appropriate safety measures.
This is usually done by concrete blocks and covered by sand and cement or natural stone at the later stage. The external wall is usually made of two layers of walls with a cavity space in between. For concrete homes, the inner wall is made of concrete blocks and for Timber Frame Houses, the inner wall is made of a timber frame structure.
In this cavity wall, you need to place insulation to stop the cold air passing through to the inside. There are different forms of insulation that can be used, ranging from panels to Injected full fill beads.
Do remember, Building regulation requires that you have a certain amount of insulation in the walls. However, the more you have in your walls the less it will cost you for heating as there would be less amount of heat loss. To get more information on different types, go to Insulation page. Insulation
These walls are made of 3” x 2” or 4”x 2” battens, cut and joined as a frame. There should be some sort of insulation placed in the gaps to stop the exit of the heat through the walls and also help with the sound proofing. It is advisable to place a waterproof membrane in front of the insulation on both sides to stop any form of dampness penetrating the walls. On top of the membrane, plaster board is fitted and usually a coat of skim coat is applied by the plasterers. These kind of walls are preferred by most plumbers and electricians as it is easier to place the pipes and wire’s through them. One disadvantage that they might have is that you have to make sure you have a supporting batten on all the places that you might be fitting a wall unit, and anything else that could be heavy for the plaster board to hold.
These walls are usually made of 4 inch concrete blocks and they require a foundation base to support the weight of the structure. As far as the insulation for the inner wall of the cavity construction, at least 2 inches is required against the inner wall.
It is possible to fit a dry wall construction on concrete walls to give extra warmth to the room. This is usually done on old properties that do not have a cavity wall structure and therefore lack the insulation required. One of the benefits of dry wall is that it keeps away the touch cold feeling you might get from a concrete wall.