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Bugs eating foam insulation

ben gilmore's picture

Greetings all, I have an interesting garage built out of 2x4 scraps long ago. I added blue foam insulation to the outside and covered it with some shiplap siding from a local milling.  Two or three years later I now see lots of blue foam dust piles on the inside, but only on the north wall. Would this be carpenter ants? Contractor ants? What beast burrows in blue foam?  I will explore next summer, but as for now from the inside I see no sawdust and the outside is buried in snow. I presume this must have happened during the spring/summer months.  Any ideas? 

Ben (post #196961, reply #1 of 6)

Here in NW Oh carpenter ants seem to like to nest between the blue foam and wet wood.  They use that route I think because it's easy going.  Eliminate the wet wood (the cause of the wet) and they go away.

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Carpenter ants... (post #196961, reply #2 of 6)

termites, you name it... it's  perfect host  / highway for bugs and vermin

all foam unless treated  ( usually with borax  during the mfr )

Mike Smith Rhode Island : Design / Build / Repair / Restore

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termites (post #196961, reply #3 of 6)

InJodhpur, India, they paint their houses with coppersulfide to stop termites.

The whole city looks blue

Even I saw that city in India (post #196961, reply #6 of 6)

Even I saw that city in India and it looks very nice, copper sulfide really help a lot to stop termites.

  It is probably termites. (post #196961, reply #4 of 6)

 

It is probably termites. You need to take care of it as soon as possible, or they get really troublesome.  Try to keep the foam and wood dry.

  It is probably termites. (post #196961, reply #5 of 6)

 

It is probably termites. You need to take care of it as soon as possible, or they get really troublesome.  Try to keep the foam and wood dry.