Insulate a crawlspace?

[Phinfan]

I have a question should I insulate the crawlspace? If so what r value should I use.

Thank you very much.

[CThomp]

Local codes have an r-value associated with crawlspaces.

Example: Florida code specifies a total r-value of 11 for a crawlspace. It could be higher for your location especially if you are up north.

How much space do you have to work with in your crawlspace?

[Phinfan]

I have about 4 feet from the floor to the bottom of the floor joists. I can sit up in there comfortably.

I live in NY and just cleaned out the crawlspace and noticed there was no insulation. What R value should I use to make some my house stays nice and warm in the winter and cool in the summer.


Thanks for your help.

Mike

[Big Builder]

I am not familiar with codes there either ........but you should be safe with R-20. We like to spray foam all crawlspaces with 3".

[CThomp]

Having a company spray foam it would be your best bet. That way it would be sealed.

D@mn I wish I had 4ft of crawlspace.

[Cole]

I am sure Giddonah could help you out, he is from NY and probably knows the codes better we do.

[rabadger]

Use styrofoam sheets on the crawl space walls. Make sure you insulate at the wall plates on the walls between joists also.