Been bored at work lately bene studying building science.  Please see https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall

If you are thinking about residing this may be the time to upgrade your dwelling.

 

Start with all the siding stripped off but the plywood or osb still on and set even with the masonary foundation wall.

Install a control layer as noted in the above site.

Install an insulation later as noted in the above site.  I really like https://www.insofast.com/resources/insulation-panels-for-exterior-commercial-framed-walls.html because it has a drain screen that helps drain the water from the control layer.

Then is has the plastic stud that is glued or fastened to the control layer.  So it has very little thermal bridging.

Then install the siding directly over the insulation. 

Unfortunately my house is brick from the early 80's.  so I cannot do any of this.

but the control layer has to go all the way down to the footer as does the instalation layer.  

Then assuming some type of crawl space you can install the control layer all they way from footer to footer.  Then install insulation.  

Then assuming a pitched roof strip off the shingles or metal and the tar paper.  Install the control layer then more instulation  (for this rigid foam is recommended to support the weight.  Then shingle or install a metal roof with fasteners going in something solid.  In this case insofast agian because of the 16" on center studs.

 

Now the building is completly water tight vapor permable (no plastic under the drywall) and air tight (stops lots of water).  You need to be sure you properly ventilate with a heat exchanger.  

 

Is this expensive sure by about 20% but saves 40% on heating and building rot.

Please let me know what  you think of this post.

 

 

Very interesting. If I were doing a residing and re roofing job, that would be the way to go.

8 minutes ago, Gene Howe said:

Very interesting. If I were doing a residing and re roofing job, that would be the way to go.

Or residing then do it.  Later reroofing then do it.  Sub floor under a crawlspace do it now.