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 Covering a gap?
scorpion12  [Team Member]
3/12/2012 7:07:55 AM
I've got 2 floor to ceiling built in book cases in my living room. The tops are crown moulding and they're within 1/4" of the ceiling. My problem: the installer caulked the gap and it looked like a flush fit but as the wood breathes, there's a gap that's formed between the ceiling and the top of the book cases.

How do I cover this gap? I'd re-caulked the gap the other day using some paintable latex caulk but it didn't work.

Someone said something about a flexible sealer... WTF is that? I just want my bookcases to not look like crap and have a damned gap.
zercool  [Team Member]
3/12/2012 8:35:45 AM
Pull the molding and re-install at the correct height?
Handydave  [Team Member]
3/12/2012 10:40:25 AM
remove all of the caulk

put small backer rod in the gap and recaulk with a latex urethane paintable caulk

the backer rod allows the caulk to only adhere to the ceiling and bookcase and be the proper thickness to flex properly
scorpion12  [Team Member]
3/12/2012 4:38:15 PM
Are you referring to the same polyurethane caulk as the "masonry" caulk? Or do I need to hit a paint store and avoid Lowes?

Handydave  [Team Member]
3/12/2012 6:34:33 PM
real paint store

here its shermax from sherwin williams and maxflex from duron
scorpion12  [Team Member]
3/12/2012 7:59:14 PM
Cool. I figured as much. I'll try to stop by one very very soon. I've got a list of stuff I need to accomplish that's about 4 pages long and these are close to the top. I've fixed the loose boards on my deck, replaced the balusters the dogs chewed through, and still have a long way to go... but I'm getting there. Just tired of seeing some of these things... if you know what I mean.
loganbent  [Member]
3/12/2012 10:40:19 PM
Or go the other way.....and remove the crown completely. Then you have a several inch gap which won't show a bit if it moves an 1/8" or 1/4"....does mean more dusting and may not work if there are lights in the top shelf that the crown is hiding wiring, but another possible solution to the problem.
Arms_Reach  [Team Member]
3/13/2012 12:31:33 AM
Post a pic...

In most cases, even when a ceiling is out of whack, it can be hid with crown. I hate to see where caulk was used after finish work was done.

...on the other hand, when caulk gets painted too soon I can guarante an uneven brake line.

A quarter inch is big..
scorpion12  [Team Member]
3/30/2012 11:34:22 AM
Ok, my measurements were really off. I didn't have anywhere near the space
For the backer rod. I went and caulked it with some elastomeric
Caulk. It worked out fine. Painting is slow but going well. Thanks for
The help!