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Bathtub caulk slow to dry?
There was craking caulk in 2 of our bathrooms. The master bath has a plastic wallboard type surround and there is a plastic (similar material as the surround). The other bath has ceramic tile and a steel tub.
I have removed the caulk from both with a razer blade and cleaned the seems. I started caulking the master and waited 3 days before using it and even then the caulk was a bit tacky. After about a week...the caulk failed. I removed the caulk again (this time much easier)...and cleaned the plastic with rubbing alcohol. After it dried I Applied BRAND NEW caulk.
Later this evening I cleaned up the other bathtub...cleaned the seems with alcohol...and caulked it with a different tube of brand new caulk.
I just checked and the master tub (plastic surround is a bit tacky after 6 hours..and the one I did 2 hours ago is almost dry already to the touch..almost no tack.
WHAT GIVES? (both were from same manfact. bought different colors on accident thats why I used 2 diff caulks)
sorry master has a plastic tub.
also I removed the caulk that failed..and waited 2 days to caulk it the second time..I was afraid it was still wet or something.
The plastic surround is not fiberglas...it is 1/2" plastic/resin of some kind. Also I did get the type with microban in it...that affecting bonding?
2 Answers
- Anonymous1 decade agoFavorite Answer
Re the failure--you should fill the tub before doing the caulking to allow it to sag while it's drying; otherwise the tub will sag when you get in and pull on the seam.
Make sure the surface is completely dry before you caulk it. Especially if you're using silicone caulk, the surface has to be bone dry.
And just a thought--are you using caulk for bathroom surfaces, with the additional silicone and mildew preventers? Fiberglass enclosure manufacturers recommend 100% silicone caulk.
- 1 decade ago
yes caulking wont stick unless very clean and dry. dont believe has anything to do with materials. probably just slight difference of temperture & moisture in bathrooms and tub.
