For Inspection Do You Have To Have Plywood Sheathing Siding

I m do a re clad of a wood framed building.

For inspection do you have to have plywood sheathing siding.

If the panels are horizontal then determine if the end joints are offset such that four corners do not meet. Not sure when the siding was installed but all four gables were like this. I was unable to see whether the rest of the house had wrap and sheathing. Found this in the attic at today s inspection.

Or do you always need sheathing when doing hardie lap siding regardless. If the flatness of sheathing or flooring panels is acceptable apa would generally recommend that any finish flooring siding or roofing be installed as planned regardless of whether gaps are present. Oriented strand board osb is a durable panel sheathing made from hundreds of thin wood strands that are hot pressed onto sheets with a wax and resin adhesive. Mike guertin often sees housewrap installed improperly.

The diagram below shows how to correctly install the layers sheathing like osb or plywood double wall construction prior to installing the fiber cement siding to help increase any home s structural value for both shear racking force wind and any settling movement providing increased strength to the exterior walls of the home keep in mind that this is a much better re siding approach. Then determine that siding is nailed to the studs. However plywood may have weak spots which can cause core voids in the panels. Plywood is about 15 to 19 percent lighter than osb.

So if you take off a piece of lap siding you have another protective layer of material before you get to the cavity of your wall. Gaps that were initially present may have closed due to normal moisture related expansion. Most builders placed either osb or plywood behind the lap siding. So now if sheathing was used under the hardi lap or panel apa would recommend a wrb.

For siding nailed to the studs or sheathing. Though many builders think of the irc as a low bar bare minimum when it comes to wrb installation the code is actually best practice learn more about the building code for housewrap installation here. We are installing hardie colorplus lap siding over e t1 11. No sheathing no house wrap.

If the panel is 1 2 inch and its grade type is m 2 then determine if the maximum stud spacing is 16 o c. So in 1994 the builder was probably complying with code. We are also re building these 10x10 decks with a 2x4 framed guardrail. I ve heard that while it s not best practice it s not necessarily a defect unless the manufacturer states in its installation manual that.

The guardrails do not have t1 11 and were not slated to be sheathed.