Hi Everyone,
I am installing fiber cement over 1" foam over existing redwood v-groove siding. Client doesn't want to maintain painted siding, so going with the Color Plus from James Hardie for siding and white trim from James Hardie around doors and windows. Climate is SF Bay Area, aka Northern California.
I have a few questions before I start.
1. What type of foam to use? (brand, foil backed, T n G?, Etc.)
2. What type of nails to use? I was thinking a 3 1/4" Galvanized #12, ring shanks
3. James Hardie's instructions say up to 1" foam can be installed under the siding, I am worried about the boards cracking or denting during installation. My client wanted the ColorPlus siding, so my boards are limited(as in it took 2 weeks to get them delivered). Do I have to pre-drill every hole?! That would take forever!
4. Vapor barrier. The siding area is basically a flat wall, with 4 windows and a door, no bays.
5. Trim I am planning on using the white Hardie Trim too.
I have done a bunch of cedar ship lap, but the insulation on the outside is new to me in northern California(SF Bay area). One thought is the use of furring strips for nailing(like pressure treated plywood). Seems like a good idea, but a bunch of extra work.
I am looking for some good building principles. I would rather do it right, than upset my client and possibly have a call back.
Thanks...
I am installing fiber cement over 1" foam over existing redwood v-groove siding. Client doesn't want to maintain painted siding, so going with the Color Plus from James Hardie for siding and white trim from James Hardie around doors and windows. Climate is SF Bay Area, aka Northern California.
I have a few questions before I start.
1. What type of foam to use? (brand, foil backed, T n G?, Etc.)
2. What type of nails to use? I was thinking a 3 1/4" Galvanized #12, ring shanks
3. James Hardie's instructions say up to 1" foam can be installed under the siding, I am worried about the boards cracking or denting during installation. My client wanted the ColorPlus siding, so my boards are limited(as in it took 2 weeks to get them delivered). Do I have to pre-drill every hole?! That would take forever!
4. Vapor barrier. The siding area is basically a flat wall, with 4 windows and a door, no bays.
5. Trim I am planning on using the white Hardie Trim too.
I have done a bunch of cedar ship lap, but the insulation on the outside is new to me in northern California(SF Bay area). One thought is the use of furring strips for nailing(like pressure treated plywood). Seems like a good idea, but a bunch of extra work.
I am looking for some good building principles. I would rather do it right, than upset my client and possibly have a call back.
Thanks...
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