Which Caulk Is Best?? - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 12-02-2009, 08:56 PM   #1
Join Date: Nov 2009
Posts: 58
Rewards Points: 45

Which caulk is best??

I have read the instructions for my integrity windows and it calls out "Grade NS Class 25 per ASTM C920 sealants". It then recommends the following: OSI® Quad Pro--Series®; solvent release butyl rubber sealant or DAP DynaFlex230t but it makes no mention of silicone.

The DynaFlex230 has a 50-year guaranty as do most silicones (which are also Grade NS Class 25 per ASTM C920 sealants) so which one is going to be the most flexible and last the longest in practice? Also the OSI Quad pro is expensive but I can't find any information as to how long it will last.

What is the best choice for long-term performance?



kooshball is offline   Reply With Quote
Old 12-03-2009, 05:27 AM   #2
Join Date: Nov 2008
Posts: 63
Rewards Points: 75

No comparison here, I would use Quad and not give it a second thought.


slickracer is offline   Reply With Quote
Old 12-03-2009, 06:04 AM   #3
ArmchairDIY's Avatar
Join Date: Oct 2009
Location: Wisconsin
Posts: 116
Rewards Points: 75

I have had very good experiences with OSI Quad.
Silicone is not a good choice. The OSI will adhere much better and is more elastic than silicone.

DynaFlex 230 may very well be a great product, but I have no experience with it.
"It looked good on paper, but paper is funny that way"

Time to Get Up Out of Your Chair and Do it Yourself! ArmchairDIY.com
ArmchairDIY is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
caulk question scatterbrain General DIY Discussions 5 10-04-2008 06:57 PM
Caulk Frustration j4ino Building & Construction 5 09-29-2008 07:03 AM
recaulking: cleaning out old caulk questions adamc Painting 6 09-19-2008 05:30 PM
Caulk Windows eric s General DIY Discussions 2 11-26-2006 08:45 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1