4.1402.1 Closed Crawl Spaces—Wall Insulation

Topic: 
Basements and Crawl Spaces
Subtopic: 
Basements and Crawl Space Walls
Desired Outcome: 
Closed crawl spaces insulated to achieve best thermal performance possible
TitleSpecification(s)Objective(s)
4.1402.1a
Insulation selection

 A fire-rated insulation (25 or less flame spread or Class I or Class A) will be used with a minimum life expectancy of 10 years 


Provide fire-safe, durable insulation that will not exacerbate moisture issues in the crawl space

4.1402.1b
R-value

Regional International Energy Conservation Code ( IECC IECC International Energy Conservation Code ) will be followed for required R-values

Improve thermal performance

4.1402.1c
Termite inspection gap

Where termite pressure exists, a 3" inspection gap will be maintained from the top of the insulation to the bottom of any wood

Allow for termite detection

4.1402.1d
Attachment

Insulation will be attached with a durable connection better than or equal to manufacturer specifications
 

Prevent insulation from detaching from the foundation wall

4.1402.1g
Onsite documentation
A dated receipt signed by the installer will be provided that includes:
  • Coverage area
  • Thickness
  • R-value

Document job completion to contract specifications

Confirm amount of insulation installed

Comply with 16 CFR 460.17