When it comes to building, long-term support and alignment are everything. Whether you’re building structural framing, flooring or load-bearing elements, using the right levelling components is key to stability from the ground up.

Even with something as small as a shim or packer, installation is everything between a job that lasts and one that doesn’t.

What are Packers and Shims?

Packers and shims are thin pieces of material used to fill gaps, level surfaces and support loads across a wide range of construction applications. They come in various shapes and materials, plastic and metal, and can be adjusted or stacked to suit your specific tolerances and site conditions.

Used correctly, they align structural elements and maintain even weight distribution over time.

Installing Plastic and Metal Packers: Step-by-Step

1. Plan and Assess

- Inspect the area to see where support or adjustment is needed.
- Choose a shim material and shape for the load and environmental conditions, for example, choose corrosion resistant plastic in wet areas or denser materials where high compression strength is required.

2. Prepare and Place

- Ensure all surfaces are clean and dry to avoid slippage.
- Insert shims or packers with precision, tap gently until firmly in place. This avoids unwanted movement under load.

3. Secure and Inspect

- Fix with appropriate adhesives, screws or fixings where required.
- Once in place double check the surface is level and the element is properly aligned.
- Document any adjustments made especially for compliance and future maintenance.

Need advice on correct placement or materials? Call PP Shim on (02) 4646 1166 for technical support.

What Shim to Choose for Your Project

Here are a few things to consider:

- Size matters – Choose a thickness that fits the gap without compromising finish or sealant performance.
- Shape and fit – Horseshoe and U-shaped work well with bolts and fittings, rectangular pieces suit slab edges or wall joints.
- Load requirements – Consider rated performance especially in structural or load bearing areas.
- Material durability – Plastic shims are good in wet or external environments. Metal shims are suitable for heavy duty or high temperature conditions.
- Ease of use – Pre-cut, colour coded makes quick work of site adjustments and reduces inspection time.

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Why Installation Matters

Well installed packers and shims prevent structural stress, movement and maintain levels over time. They’re also part of meeting building code and engineering spec requirements especially on larger or regulated projects.

Need help choosing a shim for your application or which product will meet the standards? Contact us for our expert assistance in selecting the right product for your project.

Adjustable Shims FAQs

What Material Shim Should I Use?

Plastic shims are best for most jobs due to their moisture and rot resistance, metal shims for heavy load areas. Both must be Australian compliant for structural safety.

How Do I Install Packers and Shims?

Start with a site assessment to find gaps or misalignments. Clean all surfaces before placing packers or shims snugly for even load distribution. Fix with suitable fasteners or adhesives and document for future inspections.

Can I Stack Shims?

Yes, shims can be stacked or nested to match the exact gap. Ensure shims are stable and stacking follows engineering guidelines for load bearing capacity and structural integrity.