Insulation Value

[gregs]

I am putting a house back together after a flood from hurricane Idalia. The house is concrete block. On the interior it has typical 1x2 furring strips that the drywall was attached to and had some fiberglass insulation that has been removed. I am putting it back together with the lower 3' being removable to allow easier cleanup the next time this happens. One of the other things I was planning on doing is to paint the lower 3' with Drylok waterproofer paint and sealing any holes or cracks I find.

My question is if there is any real value to adding insulation back? It would be 3/4" rigid foam board on the lower 3' and that only has an R value of 5. Also if I paint the walls with Drylock will that cause an issue with creating a vapor barrier? And the floors are going to be bare concrete with area rugs. The house is 70's construction and still has the single pane aluminum framed windows as well. Its not wining a "most efficient" house award. Thoughts?

 

[mike93lx]

Climate matters a lot. What's the location?

 

[gregs]

North Florida

 

[rayra]

It's always of value and especially on walls the sun beats on. Dumb idea NOT to put it back in.

Likewise your choice of 3'H will cause you extra work and material waste. Either go 2' or 4' (depending on the height of your water damage) as it will be much easier and cost less to repair as you can use either full sheets laid horizontally or half-width sheets laid ilikewise.

 

[gregs]

It's always of value and especially on walls the sun beats on. Dumb idea NOT to put it back in.

Likewise your choice of 3'H will cause you extra work and material waste. Either go 2' or 4' (depending on the height of your water damage) as it will be much easier and cost less to repair as you can use either full sheets laid horizontally or half-width sheets laid ilikewise.

Actually 3’ is the best looking as I played with it for a while. It’s going to look like a form of wainscoting. 2’ is to low and 4’ to high. And no waste as I am making all the stiles, rails and base out of the 12” drop.

Not sure how much of the sun beating on the bottom 3’ is really going to make a difference.

 

[billconner]

Actually 3’ is the best looking as I played with it for a while. It’s going to look like a form of wainscoting. 2’ is to low and 4’ to high. And no waste as I am making all the stiles, rails and base out of the 12” drop.

Not sure how much of the sun beating on the bottom 3’ is really going to make a difference.

Since most foam I've seen is scored for snapping at 16", consider 32". Just a thought. Not hard to piece it at 36 either.

 

[WisJim]

Unless you never need heating or air conditioning, insulation is always of value.