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I am about to start a major renovation project on a house which has vertical cedar siding (referred to as 1″x8″ channel rustic siding) which was applied over 3/8″ plywood. No blocking was provided under the sheathing, only the nails through the sheathing hold the siding to the house. Many of the nails have popped out due to the lack of holding power of the plywood. The siding is badly cupped and cracked in many places. I believe the siding should be removed and replaced. Rather than opening up the walls from the interior of the house to install blocking, I am planning on applying additional sheathing (1/2″ or 5/8″) over the existing plywood to improve the holding power of the nails and then installing properly primed and painted siding. Could I get your opinion on this plan and suggestions. Thanks for your help.
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Jim, If space allows, I would intead run horizontal battens, say 1x4 every 16" on center over new building paper. This will give you excellent nailing for your vertical sheathing as well as allow some breathing room behind your siding.
You can build out your window and door casing if necessary, same with any other trim.
walk good
david
*Definitely horizontal battens. I often use lath (available from my lumber yard in bundles for $2 ea). I screw it to the studs and sheathing using galv. deck screws, and nail to it. Haven't had one fail yet. Note that you will also need to fir out your window and door trim. Lath is 3/8", so firring is minimal (often with more lath..)
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I am about to start a major renovation project on a house which has vertical cedar siding (referred to as 1"x8" channel rustic siding) which was applied over 3/8" plywood. No blocking was provided under the sheathing, only the nails through the sheathing hold the siding to the house. Many of the nails have popped out due to the lack of holding power of the plywood. The siding is badly cupped and cracked in many places. I believe the siding should be removed and replaced. Rather than opening up the walls from the interior of the house to install blocking, I am planning on applying additional sheathing (1/2" or 5/8") over the existing plywood to improve the holding power of the nails and then installing properly primed and painted siding. Could I get your opinion on this plan and suggestions. Thanks for your help.