9.25.2.3. Installation of Thermal Insulation

  • Water damage susceptible insulation needs to be kept a minimum of 2" above a crawl space floor.
Illustration Source: Summerhill
Illustration Source: Summerhill


9.25.2.3.4) Insulation on the interior of foundation walls enclosing a crawl space shall be applied so that there is not less than 50 mm clearance above the crawl space floor, if the insulation is of a type that may be damaged by water.