non-skinning acoustical sealant

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Author Message Robin E. Snyder Senior Member Username: robin Post Number: 579 Registered: 08-2004 Posted on Wednesday, November 12, 2014 - 04:33 pm:    uses, and pros and cons, of non-skinning versus skin-forming acoustical sealant? Wayne Yancey Senior Member Username: wayne_yancey Post Number: 705 Registered: 01-2008 Posted on Wednesday, November 12, 2014 - 06:07 pm:    Acoustical caulking is non-elastomeric. Should be non-skinning and remain permanently flexible to adhere to sides of joint but still permit some flexion (say less then 5%). Pros: Non-skinning, permanently flexible; does not turn hard and loose adhesion or fail in cohesion. Cons: Permanently sticky to the touch. That's all I have to say about that FG Lynn Javoroski FCSI CCS LEEDŽ AP SCIP Affiliate Senior Member Username: lynn_javoroski Post Number: 1914 Registered: 07-2002 Posted on Wednesday, November 12, 2014 - 06:15 pm:    permanently sticky = dust and dirt collecting ken hercenberg Senior Member Username: khercenberg Post Number: 846 Registered: 12-2006 Posted on Wednesday, November 12, 2014 - 06:17 pm:    Correct. Only use in concealed applications. Use the skinning stuff in exposed applications. Wayne Yancey Senior Member Username: wayne_yancey Post Number: 706 Registered: 01-2008 Posted on Wednesday, November 12, 2014 - 06:20 pm:    It shouldn't be left exposed to view. It is usually concealed behind a base or eschutcheon or above a ceiling in a plenum or behind a control joint in gypsum board. If the caulking must be both fire-rated and acoustic, fire-rating trumps all. Fire-rated are usually reddish color.