Cold Room Panel Joints for Maximum Sealing and Energy Efficiency

Frigipan manufactures high-performance insulated panels in Pretoria, South Africa, with two distinct jointing systems available: tongue-and-groove and barrier strip joints. Each system is engineered for a precise fit, ensuring maximum thermal integrity, structural strength, and speed of installation.

As a result, both systems help improve long-term energy efficiency and create a more secure, airtight environment for cold rooms, freezer rooms, and other insulated structures.

Tongue-and-Groove (Male-Female) Joints

The tongue-and-groove joint system is our most advanced panel connection method. It features a double tongue-and-groove profile combined with high-density injected polyurethane insulation.

In addition to its precision alignment, the system includes an internal PVC or aluminium locking mechanism that draws panels together. Consequently, this creates an exceptionally tight and thermally sealed joint—ideal for temperature-controlled environments where performance is critical.

Moreover, installation is simplified through the locking mechanism, which reduces labour time and enhances consistency across large-scale builds.

Hardboard Barrier Strip Joints

The barrier strip joint system, also known as a hardboard joint, is a more traditional option. Unlike the tongue-and-groove system, this method uses an internal hardboard strip fitted into pre-cut recesses in each panel edge.

Although it does not include an integrated locking system, the barrier strip joint still forms a secure connection when sealant and external fasteners are applied. Therefore, it remains a viable option for modular buildings, dry storage, or budget-conscious cold room projects.

Furthermore, this joint system allows greater on-site flexibility, especially where slight surface unevenness must be accounted for during installation.

Which Joint System Should You Choose?

Ultimately, your choice of joint depends on the environment, application, and level of thermal control required.

• For critical temperature control (e.g., freezers and high-humidity rooms), the tongue-and-groove system is highly recommended.

• For simpler or temporary structures, the barrier strip joint may provide sufficient performance with added flexibility.

Need help deciding? Speak to our technical team for expert advice on panel joint selection and system design.

Contact Us

Frigipan supplies insulated panel systems across Gauteng and South Africa. Whether you’re building a cold room, freezer facility, or prefab structure, we offer jointing solutions that stand the test of time.
Get in touch today for pricing, specifications, or technical support.