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Interior insulation of an old brick house

5980 Views 3 Replies 3 Participants Last post by  29er
My house was built in 1919 and I was surprised to find that it is constructed with brick walls, rather than 2x4 or 2x6 studs. The exterior has a brick veneer and the inside walls are made up of red clay tile like bricks that are 4" thick. The walls are essentially uninsulated ..... not good in Minnesota.

I would like to insulate the walls by using construction adhesive to attach 2" polystyrene directly to the interior brick wall, and then use construction adhesive to attach the sheet rock to the polystyrene. The wall is above grade and moisture is not an issue. This would allow me to avoid drilling/screwing into the brick - when I replaced windows, the brick crumbled when I tried to use Tapcon screws. The thermal bridge that 2x2 stud wall would create is also avoided.

1. Is construction adhesive adequate to hold up the polystyrene and sheet rock?

2. Are there better or easier ways to do this project?

I appreciate any thoughts and recommendations you have
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Concretemasonry, it sounds like you have an interesting house with character. We looked at a lot of houses and settled on an old house because the woodwork and feel.

A 1-2" gap exists between the exterior brick veneer and the inside clay tile/block. The dimensions of the inside bricks are 12x12 and 4" thick.

I have lived in this house 2 winters and have used a wood burning fireplace insert that supplies a significant amount of the heat. I do not really have a good way to gauge my fuel consumption.

I checked with Liquid Nails and their low voc heavy duty construction adhesive can be used with polystyrene, brick and drywall.
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