Demolishing an existing 150 yr old structure and construct a new home
I have a 150 yr old ancestral home in southern india where it is hot and humid all year around. The house has an 125 x 17 area and shares walls on east and west side with neighbors. These two walls have to be kept in place. These walls are 150 or so years old and built with brick and lime.
To suit the modern comfort the plan is to air-condition all bed rooms using mini split type AC units. In doing so how do I go about insulating the existing walls on the east and west side? I have read articles about insulating old brick homes and the more I read the more I get confused. I don’t have access to exterior side since it is actually the living space for neighbors. I can add insulation on the inside although it will eat into the available area.The north and south side will have new walls and exterior insulation should not be an issue.
The roof structure will be RCC concrete style however I will have a false ceiling with insulation for the air conditioned bed rooms. This specific question pertains to the master suite which will be a two storeyed bed room construction in the first floor. The rest of the building will be a two story structure without basement. I have got the roof insulation part. The master suite faces north and that wall can be insulated on the exterior. It faces south to the living room (living room will be on the ground floor but has a cathedral ceiling)
Is it better to leave the space uninsulated ? If insulating I am thinking about adding a wood wool board as insulation and ceramic tile on top of it.
I would appreciate any feedback you may provide. If there are additional questions you may have, please let me know.
The east and west walls are generally in good shape as no evident leaks / rots exist.
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