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Shop Big Ass Shims™

Welcome to the home of the fastest, easiest, most versatile shimming system in America. Browse our full lineup of Contractor Packs, value bundles, and single-size refill packs built to help you get walls, floors, cabinets, doors, windows, showers, and countless other projects flat, plumb, and level—fast.

Made from durable PVC and proudly Made in America 🇺🇸, Big Ass Shims™ are easy to score, snap, stack, screw, staple, or nail without splitting or cracking like traditional wood or composite shims.

Whether you need our popular mixed Contractor Pack, money-saving bundles, or refill packs of the exact size you use most, we’ve got you covered.

✅ Faster installs
✅ Better than wedge shims
✅ Indoor & outdoor use
✅ Trusted by contractors nationwide

Flat • Fast • Built for Pros