Celotex 50mm GA4000 PIR Insulation Board 2400 x 1200mm Celotex 50mm GA4000 is a multi-use high performance, rigid polyisocyanurate (PIR) insulation board thats easy to use. Suitable applications include: Ground floors - solid concrete, block and beam, or suspended timber joist, and including where underfloor heating is used. Timber and steel framed walls - between and across the face of studs. Pitched roofs - between and across the face of rafters. Flat roofs - in ventilated cold roof constructions, installed from inside the building. Other retrofit and refurbishment projects - lining existing timber and masonry structures to make them more thermally efficient. Celotex 50mm GA4000’s low emissivity aluminium foil facing can help achieve lower U-values when installed facing a clear air space within a construction. Check out Celotex's frequently asked questions for common queries about positioning and installing products correctly, or contact the Celotex technical services team. Like all Celotex products, GA4000 is a thermal insulation solution that can help to meet energy use and carbon dioxide emissions targets set by national building regulations. Board size: 1200 x 2400mm Thickness : 50-100mm Lambda: 0.022 W/mK Facer: Low emissivity composite aluminium foil Manufactured using a blowing agent with zero ozone depletion potential (ODP) and low global warming potential (GWP). Important Delivery Information We offer convenient home and site delivery to get your materials exactly where you need them. If you have any special requirements, please leave a note in the customer notes at checkout. To ensure a safe and successful delivery by our crane lorry or pallet truck, please note the following access requirements: Firm & Level Surface Required: Our delivery equipment (pallet trucks and crane lorries) can only operate on a firm, level, and paved surface such as concrete, block paving, or tarmac. Surface Restrictions: We cannot offload onto soft, uneven surfaces like grass, gravel, or soil, nor can we maneuver on steep slopes. Delivery is always subject to the driver’s professional discretion regarding safety. Kerbside Policy: If we are unable to access your preferred site area due to restricted access or unsuitable ground, your pallet will be safely left at the kerbside. It will then be your responsibility to move the product to your final location. Vehicle Access: Our delivery vehicles are large (similar in size to a refuse lorry). If you anticipate any access issues on the roads leading to your property, please inform us before placing your order so we can make alternative arrangements. Difficult to find?: If your property is notoriously difficult to find please use what3words and provide in customer notes at checkout.