Floor Insulation

Question 1

Floor insulation should be a minimum R-__ and cover at least __% of floor area.

Answer 1

Floor insulation should be a minimum R-19 and cover at least 75% of floor area.

Question 2

What is the minimum depth to which staples used to support insulation must penetrate floor joists?

Answer 2

5/8”

Question 3

How far back must insulation be kept from foundation vents it might otherwise obstruct?

Answer 3

12”

Question 4

When installing ground cover, use minimum _ mil polyurethane, overlapping edges by __ inches.

Answer 4

When installing ground cover, use minimum 6 mil polyurethane, overlapping edges by 12 inches.

Question 5

What are the three types of insulation support approved by the EUC Specs?

Answer 5

20. gauge wire
    polypropylene twine
    woven wire/netting (e.g., chicken wire)

Question 6

For joists up to 24 inches OC, staples should be no more than __ inches apart.

Answer 6

For joists up to 24 inches, staples should be no more than 18 inches apart.

Question 7

For joists 25 to 48 inches OC, staples should be no more than __ inches apart.

Answer 7

For joists 25 to 48 inches OC, staples should be no more than 12 inches apart.

Question 8

Do not isolate _____ _____ in the crawlspace from the heated side.

Answer 8

water pipes

Question 9

As a best practice, use _____ _____ to accomplish both air sealing and insulation.

Answer 9

spray foam