Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I live in a twenty year old Florida condo quadplex. The upstairs ceilings are two by four trusses of a mansard roof.

I have replaced the ac, wall insulation, ducts. An IR thermometer shows huge heat gain from roof itself. I want to fir down the trusses to double the insulation to the new high r rated 2x6 insulation. Can I simply bolt 2x6s to each truss or do I need to build out the edges with strapping? Do you have an alternate idea?

share|improve this question

1 Answer 1

You're really better off with external solutions: some form of cool roof. Presumably your three neighbors face the same unwanted heat gain, and perhaps could be roped into a common project. Solid foil faced rigid foam is used in cases like this.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.