Fasten the furring strips to the concrete blocks with tapcons or similar masonry screws.
How to insulate concrete block walls.
Fiberglass insulation may irritate exposed skin areas.
Your only option is to cover the inside of the exterior walls with a continuous layer of insulation as though you were insulating a basement wall.
And there is no effective way to fill the voids in an existing concrete block wall.
Before insulating coat the exterior of the walls with fluid applied water control and air control layers.
In your climate zone zone 5 code requires you to insulate concrete block and other mass walls to at least r 13 if all of the insulation is on the exterior.
Then install 1x4 furring strips 16 inches on center on the interior side of this continuous layer of rigid foam.
The variety of concrete masonry wall constructions provides for a number of insulating strategies including.
Place the insulation between studs joists and rafters stapling them into place as you go.
The best way to install rigid foam on a concrete block wall is as a continuous layer.
This can be done with pretty much any rigid insulation.
Step 4 perform the proper insulation.
While these are the options again the material available to use depends on whether the walls will be covered or the open top is exposed like in a remodel or new build.
The simplest and most affordable method of insulating the interior of a block wall is to install rigid foam board insulation.
In fact your walls will absorb up to 95 less moisture than an untreated wall.
Once the foam starts to seep through the injection holes indicating a full cavity encompassing several blocks the process is repeated along the length of the wall every 4 feet and then again along the top of the wall about a foot short of its full height.
A respirator mask and safety goggles are also helpful.
When it comes to how to insulate a concrete block house with solid walls applying the insulation material is a bit like waterproofing your home leaving your wall completely dry and resolutely resistant to moisture.
Make this layer of rigid foam as thick as possible.
The option for insulating concrete block walls includes spray foam insulation injection foam insulation polystyrene beads foam boards and loose fill masonry insulation.