In order to insulate a wall properly, we must check to see if there is a dry lining system on the wall or if there is old rigid insulation in the cavity. These details will effect the efficiency of the new systems significantly. Nobody is being informed about these dynamics. There are plenty of people who have got there walls insulated and felt nothing. If you do not have a dry lining system or insulation in the cavity you will benefit from either silver beads or slow pour injection spray foam.
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