STI Caulking Gun

Caulk Seals Out the Elements Saving You Money on Energy and Maintenance

We Guarantee to Have the Best Price

What's special about this caulk gun?

  • Makes the application of your many caulk needs quick and easy
  • Steel welded construction is sturdy and will last for years
  • 3:1 thrust ratio gives it smooth, easy to dispense functioning
  • Click for More Features


STI-SSACG STI Caulk Gun 11 oz. 1.49 lb

The STI caulk gun facilitates the use of caulking around the home or workspace. The easy to use tool simplifies application of sealants, glues, caulks, and other tube cartridges.

  • Thumb release for single hand operation
  • Use with STI or other product line standard 11 oz caulk tube cartridges


Material Steel welded
Thrust Ratio 3:1
Weight 1.49 lbs


TOOLS: Household rags, utility knife, caulking gun, caulk, nail or awl

STEP 1: Clean the area to be caulked, removing dirt, loose paint and old caulk. Be sure the area is dry before you begin.

STEP 2: Use a utility knife to cut the tip of the spout either straight or angled. Cut off as little as possible, taking into consideration the size of the 'bead' of caulk you need. Cardboard tubes may have a second seal at the base of the spout. Insert a nail or awl through the spout to puncture the seal.

STEP 3: Load a tube of caulk into a caulking gun, making sure it's well seated at both ends.

STEP 4: Hold the gun at a slight angle. If you're filling a crack, insert the spout if you can; otherwise, run it at the surface.

STEP 5: Pull away from the bead slightly as you squeeze out the caulk, rather than push into it, which can be very messy. Use just enough caulk to do the job. (Experiment in an out-of-the-way area. You may find that you'll need less of a bead than you think.)

STEP 6: Use your finger to gently press the caulk into the corner or crack.

STEP 7: Use a damp towel or rag to clean off most of the excess caulk, then use a dry one to clean off the rest.


Technology Updates




we will beat a competitor's quote by 5%

Did you know that we can give you a quote for most of our products, including shipping?

You can also call us toll free 866.222.0030

Questions & Answers

Do you have any questions about this product?
Let our experts and customers resolve all your doubts

What can make this page better?

We do everything we can think of to provide you with the product specs, images and ordering info you need, but if we're missing something or still have room to improve, please let us know. Your comments, suggestions and questions are the best tools we have for serving you better!