Polyisocyanurate is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. The wet foam is placed against a facing and expands to meet another layer of facing. This foam then becomes tacky as it dries and adheres itself between two aluminium foil facings. Manufacturers can stop this process at any time and cook the board under heat and pressure to achieve the thickness they need. When wet PIR hardens and dries, the board is then cut into different sizes. Manufacturers cure each board in a temperature-controlled space for one day per each 25mm of thickness. The result is a lightweight, durable insulation board that is easy to manipulate and fit. The board is manufactured with agents that have zero ozone depletion potential (ODP) and zero global warming potential (GWP) meaning it is as gentle on the environment as it is tough on cold spots.

Is a PIR Insulation Board Flammable?

To understand insulation fire ratings, you have to understand the Euroclass system. All PIR board materials in Europe are subject to the Euroclass rating. The Euroclass rating was created in response to a need for consistent fire class regulations across Europe. Materials range from A1 (non-combustible) to F (combustible). There are also separate scales for smoke production (which range from s1 to s3) and flaming droplets (which range from d0 to d2). PIR insulation board is rated F (combustible) on the Euroclass scale. We recommend using a build-up of materials that are fire-resistant alongside your PIR insulation board.

Are PIR Insulation Boards Water Resistant?

PIR insulation board is moisture-resistant; the closed-cell structure repels moisture. Homeowners and commercial site managers can ensure the integrity of their spaces for years to come by investing in PIR insulation core boards. PIR insulation is ideal for people who live in high rainfall areas and those who want to reduce heat loss in their lofts and pitched roofs.

How to Cut a PIR Insulation Board?

The method you choose to cut your PIR depends on your preferences and the thickness of your board. In most cases, we recommend using a hand saw in a dedicated workshop. You should always mark your measurements on the board before cutting to ensure a concise finish. Always take proper safety precautions when cutting PIR. We recommend wearing goggles along with thick gloves to protect against accidents.

What Is Ventilated Cladding?

Ventilated cladding, also known as rainscreen cladding, is a building envelope system used in the construction industry to enhance the performance and aesthetics of a building's exterior walls. It is a two-layered approach to wall construction that provides an additional layer of protection against moisture and improves energy efficiency.The system consists of an outer cladding layer and an inner weather-resistant barrier. The outer cladding layer, which can be made from materials such as metal panels, terracotta tiles, fibre cement, or natural stone, is mounted away from the building's structural wall using a series of supporting elements like brackets or rails. This creates an air gap, or cavity, between the cladding and the building's main structure. The purpose of this gap is to allow air to circulate freely, creating a ventilated space that aids in moisture evaporation and regulates temperature.The inner weather-resistant barrier acts as a second line of defence against water infiltration. It is typically a vapour-permeable membrane that prevents moisture from entering the building while allowing water vapour to escape.