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Old 09-14-2016, 08:20 PM   #21
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I just had a job where the idiot homeowner used silicone caulking around all the door frames & baseboards.

My solution was to re-caulk with Dap 'Alex Plus' paintable caulking. It has silicone in it that will bond to other silicone caulk. That worked well for me.
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Old 09-15-2016, 03:42 AM   #22
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Quote:
Originally Posted by Mr Smith View Post
I just had a job where the idiot homeowner used silicone caulking around all the door frames & baseboards.

My solution was to re-caulk with Dap 'Alex Plus' paintable caulking. It has silicone in it that will bond to other silicone caulk. That worked well for me.

ahhhh, , no it won't
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Old 09-15-2016, 05:59 AM   #23
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Nothing except for dirt will somewhat bond to cured silicone. Not even silicone.
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Old 09-15-2016, 10:08 AM   #24
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Quote:
Originally Posted by Mr Smith View Post
I just had a job where the idiot homeowner used silicone caulking around all the door frames & baseboards.



My solution was to re-caulk with Dap 'Alex Plus' paintable caulking. It has silicone in it that will bond to other silicone caulk. That worked well for me.


I suspect what actually happened was your new bead of caulk bonded to the substrate around the existing silicone and formed a film over the top of it without actually bonding to the silicone. I've done it that way myself with regular caulk like the dap as a shortcut solution to dealing with silicone.

It can certainly work, but don't think that your Dap is actually bonded to the silicone itself.


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Old 09-15-2016, 11:35 PM   #25
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Quote:
Originally Posted by Jmayspaint View Post
I suspect what actually happened was your new bead of caulk bonded to the substrate around the existing silicone and formed a film over the top of it without actually bonding to the silicone. I've done it that way myself with regular caulk like the dap as a shortcut solution to dealing with silicone.

It can certainly work, but don't think that your Dap is actually bonded to the silicone itself.


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That is exactly the goal. I know that things don't like to stick to silicone. So the key is to cover it with the caulk basically anchored to non-siliconed substrates.

Does it stick to the silicone itself? I don't know. But what I do know is that on the rare occasions that I've had to do it I don't get any callbacks, nor have I found any issues myself if I've returned to inspect. I also know that I wouldn't do it with just any latex caulk. I have a very high level of trust in dynaflex - as in, even if it only spans a gap over the top of the silicone without being stuck to it, it won't tear out or crack or peel back off (so long as its "anchor points" surrounding the silicone are sound).

Anyone who is skeptical should just try it sometime, with the caveat that its not always possible to do it and make it look good. E.g. a big fat bead of silicone joining a sink to a wall might not leave this option.
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Old 09-16-2016, 05:31 PM   #26
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Quote:
Originally Posted by Joe67 View Post
That is exactly the goal. I know that things don't like to stick to silicone. So the key is to cover it with the caulk basically anchored to non-siliconed substrates.

Does it stick to the silicone itself? I don't know. But what I do know is that on the rare occasions that I've had to do it I don't get any callbacks, nor have I found any issues myself if I've returned to inspect. I also know that I wouldn't do it with just any latex caulk. I have a very high level of trust in dynaflex - as in, even if it only spans a gap over the top of the silicone without being stuck to it, it won't tear out or crack or peel back off (so long as its "anchor points" surrounding the silicone are sound).

Anyone who is skeptical should just try it sometime, with the caveat that its not always possible to do it and make it look good. E.g. a big fat bead of silicone joining a sink to a wall might not leave this option.
I've done this before as well. It worked fine for making a paintable new bead of caulk. However, the fool who used the 100% silicon wiped his messy fingers all over the baseboard, and not just over his bead of caulk, so I still had issues of paint separating/not adhering.
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Old 09-16-2016, 09:19 PM   #27
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Quote:
Originally Posted by SemiproJohn View Post
I've done this before as well. It worked fine for making a paintable new bead of caulk. However, the fool who used the 100% silicon wiped his messy fingers all over the baseboard, and not just over his bead of caulk, so I still had issues of paint separating/not adhering.
That's definitely the person you hunt down
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Old 09-17-2016, 10:43 AM   #28
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I've had good results with Bin pigmented shellac... Tried the SW alternative but it does not work as well
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