A jacket snap opens again as soon as you move. Pressing harder may seem like the obvious fix, but the problem could be misalignment, a damaged fastener or fabric that no longer supports the fitting properly.
Take the garment out of use if the fault compromises a workplace requirement or creates a safety concern. Protective clothing and employer-issued items may require an approved repair or replacement process rather than a home alteration.
Inspect the pair and the fabric
With the garment off and laid flat, identify the two matching halves. Look for a bent component, a loose fitting, a sharp edge or material caught between them. Check the surrounding cloth for tearing or distortion.
Compare the suspect closure with an undamaged one on the same garment. That can help describe the fault, but it is not permission to remove parts and interchange them. Similar-looking snaps can differ in size and construction.
Do not hammer, squeeze or glue an unidentified fastener in an attempt to restore its grip. An improvised repair may damage the fabric or leave a closure that appears secure only while the garment is lying still.
Describe the fault for the repair decision
Record which closure fails and what happens during ordinary movement. A clear photo of the fastener and surrounding fabric is more useful than a note saying only “button broken”. Include the garment model and any workplace restrictions.
If repair is authorised, use a competent service with the correct compatible components. Replacing the metal fitting alone may not solve a torn or weakened mounting area. Ask whether the completed repair preserves the garment’s required function and care instructions.
Check the repaired closure before the next shift, including normal movement and any required inspection. Remove temporary pins or improvised substitutes.
A sound snap should work as part of the whole garment. The aim is a dependable closure supported by intact fabric, not merely a click that can be produced once with extra force.