Insulation of barns
Do you have any suggestions regarding insulating these types of barns?
Thank you for your question.
There are several options, 3 that I recommend.
1. After your board and batten is installed and before you put up your interior wall coverings, have the cavities between the girts filled with a spray foam insulation. Then you can cover with your choice of wall coverings. This will allow you to show off the beautiful timbers instead of hiding them.
There are contractors all over the country who specialize in spray foam insulation. In my book spray foam gives you the most bang for your buck.
2. SIP's SIP stands for Structural Insulated Panels. These are basically 2 layers of plywood or OSB with a layer of foam sandwiched in between. These panels are very energy efficient but can be expensive. After your frame is up you can install these SIP's on the outside of the structure. This will give you an envelope of insulation.
3. Expanded polystyrene insulation board attached behind the siding to the girts, and behind the interior covering over the girts creating a dead air space between the girts.
It is important to get as tight of a seal as possible so that there is no air movement in that dead air space. That is not to say that the entire building should be air tight, just the space between the layers of insulation. You still need to consider proper ventilation.
This gives you the advantage of having an envelope around your building without the expense of SIP's.