Return to the Home Repair Forum | Post a Follow-Up

 o
Should this be caulked?

Posted by bill_g_web (My Page) on
Sun, Aug 26, 12 at 18:46

Just put up some new exterior corner trim, 3 1/2" wide. I don't know if the building paper in intact or how it was installed way back in '47. I'm thinking I might not caulk but I'm not sure.

Thanks,

Bill


Follow-Up Postings:

 o
RE: Should this be caulked?

I would, using paintable caulk. And then paint---because the caulk may mold/mildew otherwise.


 o
RE: Should this be caulked?

Thanks, Handymac - will do as you say. Thinking about it some more, that's the way to go.

Bill


 o
RE: Should this be caulked?

What function will the caulk perform?


 o
RE: Should this be caulked?

I was thinking the caulk would keep water from entering the house at the corners where the siding boards come together. I read that a on a properly wrapped house, the wrap would serve this purpose and caulk would only serve to keep water in, which I suppose assumes water WILL inevitably get in due to poor maintenance. I'm pretty sure that the building paper on my old house isn't functioning that well, so caulking might be a good idea, as long as I keep it maintained and painted.

BTW, all the boards at issue, siding and trim, have been primed and painted, including all end cuts, if that makes any difference.

Bill


 o
RE: Should this be caulked?

I would not caulk that. There is 3 1/2" of coverage before water could enter to framing. So IOW there is zero risk of water entering and damaging the house. However, if caulked, you have created a perfect 3 1/2" water trap for any that did enter.
The risk outweighs the reward.
Casey


 o
RE: Should this be caulked?

OK, sombreuil, that makes sense too. (I've just started learning some French and that word is a pronunciation challenge.) Once caulked, it's done, so I'll not caulk and pull up some trim this winter to check how it's going. The old trim wasn't caulked but for one corner and when I tore it all off, the caulked corner seemed a bit moist and this is months since the last rain. Admittedly, I hadn't properly maintained the caulk.

Thanks everyone,
Bill


 o
RE: Should this be caulked?

"when I tore it all off, the caulked corner seemed a bit moist and this is months since the last rain." This pretty much demonstrates what sombreuilm was saying.

I agree that no caulk is the best approach.


 o
RE: Should this be caulked?

To clarify, what the no-caulk camp is saying is that it's impossible to keep water out of this joint, even if it's maintained yearly? Or is the suggestion not to caulk based on the assumption the joint will NOT be maintained. Or maybe the moisture behind the trim is coming from inside the house? Additional varibles, I suppose, would include climate, insulation and condition of building wrap. A corner would be just wood, no insulation, so I'm not sure how that would effect moisture buildup from inside the house. Just curious as I'm now convinced not to caulk.


 o
RE: Should this be caulked?

All caulk will do is trap water longer letting rot start sooner.

Leave it alone


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Home Repair Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here