Why Your Glue Gun Drips and How to Fix It

Quick answer

Most glue gun drips come from overheating, the wrong glue stick size, or a worn nozzle. Start by lowering the temperature, checking the stick diameter, and cleaning the nozzle. If drips continue, replace the nozzle or switch to a gun with temperature control, like the Pro Tri-Temp Glue Gun with Interchangeable Nozzles by Ashland®.

Match the Glue Stick to the Gun

Glue sticks come in standard diameters, and using a stick that is too small for your gun lets melted glue escape around the feed path. Check your gun's manual or the barrel opening to confirm the correct size. If the stick slides in loosely, it is the wrong diameter. Switching to the correct size often stops leaks immediately.

Temperature Control Stops Drips Before They Start

High heat thins the glue, so it drips more freely. If your gun has multiple temperature settings, use the lowest setting that still gives a strong bond. For delicate materials like floral foam or thin fabric, a low setting reduces both drips and the risk of burning the surface. A gun with three modes, such as the Pro Tri-Temp Glue Gun, lets you match heat to the material instead of guessing.

Clean the Nozzle to Fix Stringing and Drips

Glue buildup inside the nozzle narrows the opening and causes stringing or uneven flow. Let the gun cool slightly, then wipe the tip with a paper towel while it is still warm. Never poke metal objects into the nozzle; it scratches the interior and makes dripping worse. If the nozzle is clogged, remove it according to the manual and soak it in warm water, or replace it if your gun supports interchangeable nozzles.

When to Stop Fixing and Replace the Gun

If you have tried lower heat, correct sticks, and a clean nozzle but the gun still drips constantly, the internal seal or heating element may be failing. At that point, repairs are rarely worth the cost. Choose a gun with temperature control and a drip-catching stand, like the Pro Tri-Temp Glue Gun with Interchangeable Nozzles by Ashland®, which includes a magnetic stand with a silicone pad to catch drips and an automatic shut-off for safety.

Diagnosis: match the symptom to the fix

• Drips while sitting idle: The gun is too hot or the glue stick is the wrong size. Lower the temperature if possible, and confirm the stick diameter matches your gun. If drips stop when you use a lower setting, you have solved it. If not, check the stick size.
• Stringing or cobwebbing: Glue is too thin from high heat, or the nozzle has buildup. Reduce heat and clean the nozzle with a paper towel while warm. Stringing that continues after cleaning may mean the nozzle needs replacement.
• Leaking around the nozzle or back of the gun: A worn seal or cracked housing is the likely cause. Stop using the gun; it is a safety risk and not worth repairing. Replace the gun with one that has temperature control and a drip-catching stand, like the Pro Tri-Temp Glue Gun.

Product facts

• Pro Tri-Temp Glue Gun with Interchangeable Nozzles by Ashland®: The Pro Tri-Temp Glue Gun with Interchangeable Nozzles by Ashland® has three temperature modes, a magnetic stand with a silicone pad to catch glue, and automatic shut-off. Three heat settings let you reduce drips by using lower temperatures for delicate materials, while the silicone pad catches any stray glue and the auto shut-off adds safety if you forget to unplug it.