How to Use HandiShims
for Cabinet & Countertop Installation
Achieve a flawless, high-end finish on your next kitchen or bathroom install by using HandiShims. Unlike tapered wood shims that can compress, split, or rot over time, HandiShims provide a perfectly flat, solid, and non-compressive base for leveling base cabinets and supporting heavy countertops.
Our high-density plastic shims ensure your installation remains perfectly level for the life of the project. They are rot-proof, making them essential for use in wet areas like kitchens and bathrooms, especially around sinks and dishwashers.
Use HandiShims for:
- Leveling Base Cabinets: Easily and accurately level base cabinets on uneven floors, creating a perfectly flat foundation for the countertop.
- Spacing & Aligning Uppers: Use shims to set consistent spacing between upper cabinets or between a cabinet and a wall.
- Supporting Countertops: Provide solid, non-compressive support for heavy materials like granite, quartz, and marble, preventing sagging or stress cracks.
- Creating Reveals: Precisely set the gap between the top of the cabinet and the underside of the countertop
How to Use:
Leveling Base Cabinets:
- Find the highest point on the floor where your cabinets will sit. Start installing from this point.
- As you set the adjoining cabinets, place HandiShims under the cabinet base to bring it up to the level of the first one.
- Use a long level (4-foot or 6-foot) across the tops of the cabinets. Tap shims in or out, or stack different thicknesses (Green 1/32”, Red 1/16”, White 1/8”, Blue 1/4”) until all cabinets are perfectly level and flush with each other.
- Secure the cabinets to the wall studs through the shims for a rock-solid installation that won't compress or settle.
Setting Countertops:
- After the base cabinets are level, lay a bead of adhesive or silicone.
- Place HandiShims on top of the cabinet edges at the front and back, especially at corners and over cabinet joints, to create a level plane.
- Carefully set the countertop onto the shims. The shims provide a flat, stable surface that absorbs no moisture and won't compress under the countertop's weight.
- Once the countertop is perfectly positioned and level, trim the excess shim by snapping it at the scored for effortless splitting line for a clean, invisible finish.