Celotex PIR Insulation Board - 2400mm x 1200mm - All Thicknesses

• Lightweight 2400 x 1200mm boards with a range of thicknesses
• Ideal for roofs, walls and floors
• Low emissivity foil facing
• BBA certified – certificate 17/5405 (Pitched Roof, Dry Lining, Floor Insulation)
• Easy to Install

Choosing the right PIR Insulation board for your application:

Floor Insulation: GA4000 and XR4000 boards are ideal for use in ground floors, suspended timber floors, and concrete slabs. These boards provide high compressive strength and moisture resistance, making them perfect for a variety of floor insulation needs.

The TB4000 board is an excellent option for areas requiring a thinner insulation profile.

Pitched Roof Insulation: TB4000, GA4000 and XR4000 boards offer superior thermal performance.

GA4000 and XR4000 are commonly used between and over rafters for maximum insulation, while TB4000 provides a slimmer option for applications where space is a constraint.

Wall Insulation: GA4000, TB4000, and XR4000 boards are versatile solutions. These products are well-suited for internal wall insulation and external applications, offering excellent thermal performance across different wall types.

What is PIR insulation?

PIR, or polyisocyanurate, is a popular type of insulation known for its exceptional thermal efficiency. It is among the most effective insulation materials available in the industry today. Its unique properties make it a preferred choice for various applications in building and construction projects, helping to improve energy efficiency and reduce heat loss.

What Happens if PIR Insulation Gets Wet?

PIR insulation, or polyisocyanurate insulation, is designed to be resistant to moisture; however, prolonged exposure to water can lead to significant damage. If PIR insulation becomes wet, it can lose its insulating effectiveness and overall performance may deteriorate.

What are the 3 different types of Celotex PIR?

Within the Celotex PIR range, there are three distinct products: TB4000, GA4000, and XR4000. These product names correspond solely to the varying thicknesses available, with no differences in their fundamental composition.

What is the difference between Celotex TB4000, GA4000, and XR4000?

Celotex TB4000 is available in thinner sizes, from 20mm to 40 mm. It’s designed to reduce thermal bridging (when heat escapes through parts of a structure with less insulation). It’s often used around the edges of floors, walls, or pitched roofs to boost thermal efficiency without adding much bulk.

Celotex GA4000 is a General-purpose PIR insulation board suitable for pitched roofs, walls, dry lining, and floor insulation. Its thickness ranges from 50mm to 100mm, and is known for its versatility and high thermal performance. It can be used effectively in various building applications, including being installed in the middle of pitched roofs.

Celotex XR4000 is a high-performance PIR insulation board suitable for various applications, including walls, roofs, and floors. It’s offered in a range of thicknesses, from 110mm to 200mm. XR4000 is particularly effective in reducing heat loss in external applications and is often used where high insulation values are required.

How is Celotex PIR insulation installed?

Celotex PIR insulation is typically installed by fixing it in place using mechanical fixings or adhesives. It can be cut to size to fit snugly between studs, joists, rafters, or within cavity walls, ensuring proper coverage and thermal performance.

Is PIR the same as Celotex?

PIR (Polyisocyanurate) refers to a type of rigid foam insulation, while Celotex is a brand that manufactures PIR insulation boards. So, while all Celotex products are PIR insulation, not all PIR insulation is Celotex.

Can I order Celotex PIR insulation in bulk?

You can! National Insulation Supplies offer bulk deals so can you save money on a big project. To order Celotex PIR in bulk, simply fill out our bulk order form and we'll take care of the rest! Alternatively, feel free to call us at 020 3004 5451 and our sales team will be happy to assist.