Expert: Bruce E. Johnson - 1/29/2009

Question
I just bought a block home built in 1949.  There is no insulation inside the block, and there is stucco on the outside.  I would like to know the best way to insulate without tearing apart the interior walls. Would vapor barrier and siding be an alternative, or maybe fill the blocks themselves. I live in north central Pennsylvania. Thank You

Answer
Hi Lisa, many home insulation contractors offer foam core injection for masonry block homes.  Your best bet is to start calling those in the yellow pages and find one that does.  They drill through the stucco from the outside, inject this foam that expands and fills up the wall cavity. Then, using stucco mix they patch the small holes and all you have left to do is touch up the hole patch with paint.  The stuff we use in Florida is called "core-fill 500", it is a polymer based foam and is pretty awesome.  The cost is reasonable also.  A single family home will run 1500-3000 dollars depending on size and location.  Most large city insulation contractors travel to smaller communities also.I hope this information helps feel free to write again regarding this or other matters, sincerely bruce e johnson..bejohnsonconsulting.com