How to Repair a Bostich Roofing Gun

Inspect the air hoses that run from your Bostitch roofing gun to your compressor if the gun fails to drive fasteners completely into the work surface. Weak or gradually weakening performance can be a result of insufficient air supply and low pressure. Your air supply line should measure 3/8 inch and be heavy-duty quality to handle the requirements of your roofing gun.

Inspect the air supply line for kinks, cuts or other obstructions if your roofing gun fails to operate or does so weakly. These flaws in the line can effect the air delivery and reduce the power of your roofing gun. An overly long air supply line can also reduce your gun's effectiveness. Keep the lines as short as possible for the best results.

Connect your compressor directly to an electrical outlet. Extension cords can reduce the amount of current that reaches the machine, which in turn will reduce the power of your Bostitch roofing gun. Similar problems can arise when the outlet to which your compressor is connected is shared with another appliance or electrical device. The other device may drain some of the power supply and negatively effect the power of your roofing gun.

Check that your air compressor is set to the proper pressure as indicated by the specs provided with your particular model Bostitch roofing gun. Air pressure that is too low will cause the gun to fire weakly if at all, and pressure that is too high can cause damage to the gun and injury to its users. Bostitch roofing nailers and staplers tend to require pressure in the 70-to120 psi range.

Remove the water droplets that form inside of your compressor air tank as a natural by-product. This moisture can clog the air lines and affect the performance of your roofing gun. Continually drain the tank as needed.