Fastening shiplap problem with extra wide trim

**waltsyd** · 02-23-2013, 10:38 AM

Original house has wide trim and corner boards. The trim is lain over the top of the V lap siding, which in my opinion looks terrible with messy caulk at every gap. I'm putting in an addition and want to butt the siding to the corner boards and trim instead of overlay the trim.

The problem is that the extra wide trim doesn't allow the siding ends to reach the king studs or corner studs. Is it okay to just nail those ends to the 1/2 inch osb, or should there be additional nailers under the osb?

**Lavrans** · 02-23-2013, 10:53 AM

Do you really want to have the addition look almost like the rest of the house? Keep consistent, or change the siding detail completely.

**Allan Edwards** · 02-23-2013, 10:59 AM

Originally Posted by waltsyd

The problem is that the extra wide trim doesn't allow the siding ends to reach the king studs or corner studs. Is it okay to just nail those ends to the 1/2 inch osb, or should there be additional nailers under the osb?

At 16" OC I think you need some kind of nailer or blocking in the wall for the siding to attach to, I would not depend on the osb. If you have not started framing couldn't you layout based on this detail?

**waltsyd** · 02-23-2013, 12:52 PM

It's framed already. I chose to change the trim detail after framing. I hadn't really thought about it very much until I realized that the trim would cover the king and corner studs. I could go back to overlay, I suppose. I just looks so odd to me. But it is an old house and quite a lot of the work is very different than the norm today.

**dlhunter** · 02-23-2013, 12:55 PM

How far away is the closest stud?
I guess you rabbet the end of the siding and dado the back of the trim so the siding rabbet tucks in behind the trim.

**waltsyd** · 02-23-2013, 02:29 PM

Standard spacing. But the rabbet would defeat the purpose of hiding the holes. Might as well just use 3/4 trim on top of the siding and caulk all those holes. Most of the rest of the house is that way.

**ThingOfBeauty** · 02-25-2013, 08:25 PM

V-groove shiplap is pretty strong. If that different look is important to you, I would consider running it past the last stud and cross-nailing it to the OSB. Should stay pretty straight for the last 10-12" past the last stud.
I also agree with everyone who's said it probably makes sense to run it the same way as the rest. It's charming and it matches.

**TWhite** · 02-26-2013, 07:02 AM

I would match the rest of the house.

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