Question

For old houses, special _____ foam can be pumped into the cavity through holes drilled in the wall.

Answer 1

Insulation foam is used in old houses for insulation purposes and is pumped into cavities through holes drilled in the wall. This is done to provide thermal insulation and prevent heat loss.

Step-by-step explanation:

For old houses that need insulation improvement, specially made insulation foam can be used. This foam is typically pumped into the cavity through holes drilled in the wall to fill up any empty spaces, providing thermal insulation and preventing any unnecessary heat loss. The process is commonly carried out by professionals who do a preliminary inspection of the house, determine the appropriate places for drilling holes, and consequently pump in the foam to fill the empty cavities.

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