07/08/2026
Plastic or metal shims... the right choice depends on the job, not preference.
Plastic packers work well for door and window installs, plumbing adjustments, and anywhere moisture is a factor. They won't rot, won't corrode, and for most general construction tasks, they're more than up to the job.
Metal shims are the go-to when you need maximum rigidity and precision. Structural alignment, machinery levelling, heavy fabrication — steel holds its shape under load and can be manufactured to exact tolerances.
Bottom line: match the material to the load, environment, and required precision. Both have their place on site.
Got a shim question that's been bugging you? Ask away in the comments.