How to Fix a Caulking Gun

Caulking gun parts

A standard caulking gun consists of a barrel or frame that holds the tube of caulk or sealant, a plunger rod and plate to push the product out of the tube, and a large trigger with a release tab to control the plunger. Caulking guns also feature a smaller trigger to assist in removing the tube of caulk or sealant when it’s time to replace it.

What you’ll need to fix a caulking gun

To fix a caulking gun, the equipment you’ll need includes:

• A wrench/spanner
• Protective gloves
• Cloth for wiping excess sealant
• Safety glasses (if the spring is under tension)

Depending on the design of your caulking gun, different issues will require different fixes, so it’s important to identify the cause of the problem before attempting a repair.

Common signs your caulking gun needs repairing

Common signs that your caulking gun is in need of a repair include:

• The plunger won’t move forward
• The trigger won’t squeeze
• The plunger rod slips backwards
• The gun feels jammed
• Sealant won’t dispense evenly

How to fix a caulking gun

Step 1:

Start by using your wrench or spanner to remove the nut that secures the plunger plate to the plunger rod. Once done, remove the rod while holding the release tab to prevent the spring from moving out of position.

Step 2:

Next, reposition the release tab while holding the spring that controls the trigger, flipping it over and putting it back into place. Make sure the hole in the release tab lines up with the hole that the plunger rod will go through.

Step 3:

The next step is to insert the plunger rod back into the barrel while still holding the release tab and spring. The hook end of the barrel should be towards the top of the gun.

Step 4:

Lastly, reattach the nut to the plunger plate and test the trigger to make sure it’s working correctly. If so, the repair is complete and your caulking gun should be working correctly again.

Next steps for fixing a caulking gun

You now know how to fix a caulking gun and the simple steps involved in the process. If your caulking gun is beyond repair, explore our range of high-quality caulking guns and sealants and adhesives at IronmongeryDirect, ensuring you have the right tools and materials for your next project.

FAQs

Is a caulking gun the same as a silicone gun?

“Caulking gun” and “silicone gun” are often used interchangeably to describe a hand tool used to dispense sealants and adhesives from cartridges.

What do you apply sealant with?

Sealant is typically applied using a caulking gun, which provides controlled, even pressure. By creating consistent beads of sealant, a smooth, professional finish is created.

What is a caulk gun used for?

A caulk gun is used to apply sealants, adhesives, and caulk from a cartridge. By dispensing an even bead of product, it’s ideal for sealing gaps around windows and doors.

What are the common mistakes when caulking?

Common mistakes when caulking include cutting the nozzle too large and applying too much sealant. Not cleaning the surface beforehand and dispensing sealant too quickly can result in poor adhesion and a weak, messy finish.