I am thinking of buying a 1970’s bungalow it is timber framed with brick exterior. The floor is suspended joists with way roc covering. The owner has no idea if there is any insulation in the walls or floor. The roof is insulated and the bungalow has UVPC double glazing about 15 years old. Is there anyway to bring this building up to modern standards of energy efficiency? The site is spectacular but subject to strong winds.