8 in Composite Plastic Shims 100 Pack - Heavy Duty Leveling Wedges

Our review of these 8 in composite plastic shims finds them to be a practical, no-fuss solution for homeowners and tradespeople who need reliable spacing and leveling material in quantity. The pack of 100 shims is the single biggest selling point: it eliminates repeated trips for more pieces and suits larger projects such as setting cabinets, leveling tables, or stabilizing outdoor structures. Constructed from PP with a pre scored taper, these shims are ready to snap to the exact thickness needed and resist common outdoor stresses.

Key Features

• 100-piece pack: Provides a large supply so multiple fixtures or larger projects can be completed without running short.
• 8 in length with taper: The full-length 8 in shim taps from about 5/16 in to 1/16 in, offering a wide adjustment range for precise leveling.
• PP construction: The polypropylene material delivers stiffness and toughness so shims hold up under sustained pressure.
• Pre scored for snapping: Ready to use out of the bag with no tools required; snap to size for quick, accurate fits.
• Weather resistant: Designed to withstand rain and sun without rotting, warping, swelling, or splitting, suitable for outdoor use.
• Anti slip texture: Tight surface patterns help prevent movement on smooth or uneven surfaces, improving stability.

Who It's For

These shims are aimed at DIYers, handymen, and contractors who need a reliable, versatile leveling option for tasks like installing cabinets, aligning doors, shimming appliances, or stabilizing deck posts and outdoor furniture. The large pack size and ready-to-snap lengths make them especially useful on jobs where many small adjustments are required.

They are less suitable for finish carpentry where invisible, ultra-thin shims are needed under trim, or for applications that require metal shim stock or precision-machined tolerances. If a project demands custom-cut metal or adhesive-backed shims, consider a different material.

Pros & Cons

Pros

• Generous 100-count supply reduces trips and keeps plenty of spares on hand.
• Sturdy PP material with good stiffness provides lasting support under pressure.
• Pre scored design makes sizing quick without tools, saving installation time.
• Weather resistance and anti slip pattern make them suitable for outdoor use.

Cons

• Plastic shims can compress slightly under very heavy, concentrated loads compared with metal shims.
• They may be visually noticeable in very fine finish work where invisible shims are required.

Specifications

Pack quantity	100 pieces
Length	8 in
Width	1.5 in
Height / thickness	0.275 in (taper 5/16 in to 1/16 in)
Material	PP (polypropylene)
Finish	Anti slip texture

Our Verdict

The 8 in composite shims in a 100 pack are a solid value for general leveling and spacing tasks, offering durability, weather resistance, and an easy, snap-to-size workflow. They work particularly well for larger jobs or contractors who need quantity and convenience, while those needing metal precision or invisible finish shims should consider alternatives.

Frequently Asked Questions

Can these shims be cut or trimmed?
Yes, they are pre scored to snap to size without tools, and can also be cut if needed for special fits.

Are they suitable for outdoor use?
Yes, the polypropylene material resists rot, warping, swelling, and splitting, so they perform well outdoors.

Will they compress under heavy loads?
They are sturdy with good stiffness, but like most plastic shims they can compress more than metal shims under very high, concentrated loads.