Don’t Let That Open Caulk Tube Turn Into a Brick
Caulking Tube Tricks & Tips
Most partly used caulk tubes fail in one of two ways: the nozzle dries solid, or the tube leaks all over the shelf. A few simple habits can prevent both.
CLEAN THE NOZZLE
Wipe away excess material before it cures around the opening.
SEAL IT AIRTIGHT
Use a proper cap that grips and seals the nozzle. A loose nail or screw may slow drying but often doesn’t create a reliable seal.
STORE IT APPROPRIATELY
Follow the product label for temperature and storage. Avoid freezing, extreme heat, and direct sun.
CHECK BEFORE REUSE
Squeeze out a small amount. If the material is separated, badly skinned, lumpy, or no longer adheres properly, replace it. Caulking only lasts a limited time once opened, but with proper storage can often last 6 months or more.
DON’T TRUST OLD MATERIAL ON CRITICAL JOINTS
For waterproofing or high-movement joints, questionable caulk isn’t worth the risk. Some of the best caulking out there is the Big Stretch caulking line. It will stretch about 500% before breaking and it sticks really well.
I tried the nail in the end, tape over the end and more, and sometimes they worked, but too often they failed, which is why I came out with the caulking tube caps. These have a spiral threaded design that you screw onto the open tube end and it grips well, while keeping the end from drying out.
A small cap can save most of a tube—and keep that tube from becoming a sticky surprise in your toolbox.