For crawl spaces, usually rectangular metal or plastic louvered ventilators are used.
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Q9: The type of insulation that requires a
Q10: Water vapor tends to condense onto warmer
Q11: Extruded polystyrene insulation boards lose the ability
Q12: The largest percentage of heat loss for
Q13: The structural material which has the best
Q15: Insulation actually can pay for itself.
Q16: At the _ point, air is completely
Q17: _ foams have the best R-value per
Q18: Air leakage is the major cause of
Q19: Air is what makes most insulations work
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