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How to Stick Polystyrene Together?

Sticking polystyrene sheets and boards together is simple with the right adhesive. Because polystyrene is lightweight and smooth, using the correct glue ensures a secure, lasting bond without damaging the material. In South Africa, builders, architects, and hobbyists alike rely on proven methods to join polystyrene pieces seamlessly for insulation, craft, or display projects. Here’s how to do it!

Choosing the Right Adhesive

Special polystyrene adhesives are available, designed to bond without melting the foam. Solvent-free adhesives or water-based contact glues are ideal, preventing any surface damage. Many of these adhesives are easy to apply and offer excellent initial tack and final strength. For quick fixes, double-sided tape or low-temperature hot glue guns are also popular, especially for craft and display work.

How to Apply the Adhesive

Start by cleaning the polystyrene surfaces, ensuring they’re dust-free for the best bond. Apply the adhesive in a thin, even layer across one or both surfaces. Press the pieces together gently and allow a few minutes for the bond to set. For heavier sheets, temporary weights or clamps can help ensure a perfect join.

When to Use Additional Fasteners

For larger installations or structural uses, mechanical fasteners like plastic nails, washers, or insulation pins can complement adhesives for extra strength. This is common in underfloor or ceiling insulation, ensuring long-term stability and durability for your project.

Expert Help and Advice

If you’re unsure about the best adhesive or technique, our team offers expert advice and technical support. We’re here to help you choose the right method for your application, ensuring safe, long-lasting results every time.

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Standard Polystyrene Sheets & Blocks

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High-Density Polystyrene Floor Insulation Boards

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Custom-Cut Polystyrene Void Formers

Custom Void Formers To Raise Concrete Slabs

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