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Old 09-01-2010, 02:30 PM   #1
jad
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Caulking question?


Is it necessary to remove the old caulking prior to re caulking? I know if it is very loose and easy to remove it make since to remove it, but what if it is just cracked and has some space that is to big to fill in with the paint?
This question applies to both inside the house on crown moldings, and outside around windows?

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Old 09-01-2010, 02:41 PM   #2
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Caulking question?


You should always remove old cracked and bridal caulk before you apply new caulking. Also clean the area very well before applying the new caulk.

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Old 09-01-2010, 03:09 PM   #3
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Caulking question?


Good advise! If the gap is large, don't just add more caulking, but install some backer rod to get the optimum hour-glass shape:
pp.#35: http://books.google.com/books?id=XHA...0break&f=false

http://books.google.com/books?id=fDs...age&q=&f=false

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Old 09-07-2010, 02:44 PM   #4
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Caulking question?


Gary is right - insert a backer rod is the gap is wider than 1/4". It will help whatever caulk you re-seal with to stretch correctly & last longer.

In general, if it's split down the middle, you can just go over it with more caulk to seal it up. However, if what you used is silicone or contains silicone, you'll have to cut it all out, clean the joint to get rid of any silicone residue, then re-apply caulk. Silicone won't stick to itself, which is why that's necessary.

Hope that helps! -- Charis w/ Sashco - www.sashco.com
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