16 C.F.R. § 460.16 What new home sellers must tell new home buyers.
Title 16 - Commercial Practices
If you are a new home seller, you must put the following information in every sales contract: The type, thickness, and R-value of the insulation that will be installed in each part of the house. There is an exception to this rule. If the buyer signs a sales contract before you know what type of insulation will be put in the house, or if there is a change in the contract, you can give the buyer a receipt stating this information as soon as you find out.
Title 16: Commercial Practices
PART 460—LABELING AND ADVERTISING OF HOME INSULATION
§ 460.16 What new home sellers must tell new home buyers.