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SIP panels and fire

How can plasterboard and non-combustible cladding help achieve the required fire rating on a boundary wall?

Plasterboard and non-combustible cladding play a crucial role in achieving the required fire rating on a boundary wall. By using these materials, you can enhance the fire resistance of the structure and ensure safety compliance.

Plasterboard acts as a protective layer, slowing down the spread of flames and providing insulation. On the other hand, non-combustible cladding offers additional protection by resisting fire and limiting its potential to spread.

Together, these materials create a barrier that helps to contain fires within specific areas, reducing the risk of damage and ensuring that the building meets necessary safety standards. Incorporating plasterboard and non-combustible cladding is a smart choice for achieving the required fire rating on a boundary wall.

What is the significance of using ventilated fire cavity barriers in SIP construction?

Ventilated fire cavity barriers play a crucial role in timber kit and SIP panel construction, ensuring safety and compliance with building regulations. By incorporating these barriers, builders can effectively compartmentalise fire risks and prevent the spread of flames within the structure.

The significance of using ventilated fire cavity barriers lies in their ability to maintain airflow while still providing essential fire protection. This balance is vital in SIP and timber kit construction to safeguard against potential fire hazards without compromising the overall ventilation system.

Incorporating ventilated fire cavity barriers not only enhances the structural integrity of timber constructions but also offers peace of mind knowing that necessary precautions are in place to mitigate fire risks effectively.

How do PU and EPS insulations compare in terms of fire resistance?

When comparing PU and EPS insulations in terms of fire resistance, it's crucial to understand the differences between the two. Polyurethane (PU) insulation is known for its excellent fire resistance properties, making it a popular choice in construction. On the other hand, Expanded Polystyrene (EPS) insulation is also widely used but has different fire resistance characteristics.

By exploring the fire resistance capabilities of both PU and EPS insulations, we can make informed decisions when selecting the right material for specific applications.


PU insulation neither melts nor drips when heated. The char emerging on the surface of the insulation protects the core from decomposition, so the integrity of the structure is maintained for a long time even if heavily attacked by the fire. OSB element of the panel is wood and will burn, but for fire resistance the panels are encased in plasterboard to the internal face and a non-combustible cladding to the external face. 


EPS fire resistance is a crucial aspect to consider when using expanded polystyrene in various applications. Being primarily manufactured from the styrene monomer, EPS is expanded to form a basically closed off cellular structure. However, it is important to note that EPS is flammable and understanding its fire resistance properties is essential for safe usage.

By exploring the fire resistance capabilities of EPS, we can ensure its appropriate application in construction, where safety is paramount.

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