Collection: Celotex Floor Insulation

Celotex is renowned for its range of reliable and high-quality insulation solutions, and their Floor Insulation category is no exception. The selection primarily includes the GA4000, TB4000, and XR4000 series, available in various thicknesses to cater to different insulation needs.

GA4000 Series

The GA4000 General Purpose PIR Insulation Boards are versatile, suitable for a variety of flooring applications, and come in dimensions of 2.4m x 1.2m. With options from 50mm to 100mm, they are ideal for projects that require robust insulation with minimal thermal bridges.

TB4000 Series

Celotex's TB4000 Thermal Bridging Boards are designed to target thermal bridging areas, with thicknesses ranging from 12mm to 40mm. These boards are perfect for enhancing the thermal performance of your floor system, especially in junctions and hard-to-insulate spots.

XR4000 Series

The XR4000 Insulation Board series offers a solution for higher load-bearing requirements, available in thicknesses up to 200mm. These are particularly well-suited for floors that need to support heavier loads while providing superior insulation.

Specialty Options

For specialised applications, Celotex offers the CW4000 and PL4000 series, which come in various thicknesses and are tailored for cavity walls and plaster-laminated insulation needs, respectively. These products can complement floor insulation systems in more comprehensive building insulation strategies.

When selecting the appropriate Celotex insulation for your flooring, consider the thermal requirements, load-bearing capacity, and whether the insulation will encounter significant thermal bridging. Celotex's range in the Floor Insulation category ensures that whether you're insulating a residential property or a commercial building, you'll find the right fit for your project.

Celotex Insulation Board

A Celotex insulation board is a high-performance PIR insulation product designed to improve thermal efficiency in floors, walls, and roofs. Known for its excellent insulation properties and slim profile, a Celotex insulation board helps reduce heat loss while maximising usable space within a building. Lightweight, easy to install, and suitable for both new build and refurbishment projects, Celotex insulation boards are widely used by builders, contractors, and homeowners looking to improve energy efficiency and meet modern building standards. Their durable construction and reliable thermal performance make them one of the most popular insulation solutions available in the UK.

Benefits of Celotex Floor Insulation

Celotex floor insulation is a high-performance PIR insulation solution designed to improve thermal efficiency and help reduce heat loss through floors. Suitable for both new build and refurbishment projects, Celotex insulation boards provide excellent thermal performance while maintaining a slim profile.

Key Benefits

• Excellent thermal insulation performance
• Helps reduce energy consumption and heating costs
• Lightweight and easy to handle
• High compressive strength for flooring applications
• Suitable for concrete and timber floors
• Moisture-resistant closed-cell structure
• Easy to cut and install on site
• Helps achieve Building Regulations requirements

Applications of Celotex Floor Insulation

Celotex floor insulation boards are suitable for a wide range of residential and commercial construction projects.

Common Applications

• Ground floor insulation
• Solid concrete floor constructions
• Suspended timber floors
• New build housing projects
• Home extensions and renovations
• Commercial building developments
• Energy-efficiency upgrades
• Underfloor heating systems

Why Choose Celotex Floor Insulation?

Celotex floor insulation is one of the most trusted insulation solutions in the UK construction industry, offering outstanding thermal performance with minimal board thickness. Manufactured using rigid PIR technology, Celotex boards help maximise floor insulation levels while preserving valuable floor space. Their lightweight design and ease of installation make them a popular choice among builders, contractors, and self-builders seeking reliable and energy-efficient insulation solutions.

Why Buy from Build4Less?

• Competitive prices on Celotex insulation products
• Trusted insulation brand with proven performance
• Wide range of board thicknesses available
• Suitable for residential and commercial projects
• Fast UK delivery on selected products
• Expert customer support and technical guidance

To complete your insulation project, explore our PIR Insulation Boards collection for additional high-performance insulation solutions suitable for walls, floors, and roofs. You may also be interested in our Floor Insulation range, offering products designed to improve energy efficiency and thermal comfort. For roof applications, browse our Roof Insulation collection, while our Insulated Plasterboard range provides an effective solution for improving wall insulation.

Frequently Asked Questions

What is Celotex floor insulation used for?

Celotex floor insulation is used to reduce heat loss through floors and improve the overall energy efficiency of buildings.

Can Celotex floor insulation be used under concrete floors?

Yes, Celotex insulation boards are suitable for use beneath concrete floor slabs and screeds.

Is Celotex floor insulation suitable for timber floors?

Yes, Celotex boards can be installed between or above timber floor structures depending on the project requirements.

Does Celotex floor insulation help reduce heating bills?

Yes, by reducing heat loss through floors, Celotex insulation can help improve energy efficiency and lower heating costs.

Is Celotex floor insulation moisture resistant?

Yes, Celotex PIR boards feature a closed-cell structure that provides good moisture resistance.