Insulation 150mm | Insulation Boards | Insulation

At Insulation4less, we are pleased to present a meticulously curated selection of 150mm insulation products that cater to a wide range of insulating needs. This category features top-tier insulation solutions, ensuring your projects benefit from optimal thermal resistance performance and stellar quality.

Our Trusted 150mm Insulation Solutions

Explore our hand-picked selection of 150mm insulation boards, slabs, and rolls with product specifications — designed for efficiency, performance, and compliance. Whether you're insulating a floor, flat roof, wall, or loft, we've got the right solution for your project.

General Purpose PIR Board

Celotex GA4000

A reliable and highly versatile PIR insulation board, ideal for a variety of uses including floor, wall, and roof insulation. With excellent thermal conductivity, it’s a go-to solution for achieving lower U-values and meeting building regulations with ease.

IKO Enertherm ALU

Featuring a multi-layer aluminium laminate on both sides, this PIR board delivers top-tier insulation with a slim profile. Perfect for those looking to maximise thermal efficiency without sacrificing internal space.

Floor Insulation Board

Kingspan Thermafloor TF70 & Kooltherm K103

This premium insulation board is engineered explicitly for ground-floor applications. Offering excellent compressive strength and low thermal conductivity, they deliver long-lasting thermal performance and moisture resistance on domestic and commercial floors.

Enhanced EPS (Jablite)

Lightweight yet robust, Jablite’s Expanded Polystyrene (EPS) board provide dependable floor insulation with water resistance and ease of installation. A budget-friendly solution without compromising on energy efficiency.

Flat Roof Insulation Board

Kingspan Thermaroof TR26 & TR27

Ideal for flat roof constructions, these high-performance PIR boards are well-regarded for their durability and superior thermal insulation. Suitable for both mechanically fixed and adhered systems.

Celotex Crown-Up PIR Flat Roof Board

Developed explicitly for warm flat roof applications, Crown-Up combines ease of installation with dependable thermal resistance, helping to reduce heat loss through the roof and lower energy bills.

Rainscreen & Framing Slabs

Rockwool Rainscreen Duo Slab & Kingspan K-Roc Rainscreen Slab

Designed to offer dual benefits — high thermal resistance and fire resilience. These slabs are perfect for ventilated façade systems, acting as both insulation and protection against external weather conditions.

Kingspan K-Roc Framing Slab

A high-density, non-combustible insulation slab tailored for use in framed systems, providing robust thermal and acoustic insulation across internal and external walls.

Loft Roll Insulation

ODE Starflex Loft Roll

Made from non-itch mineral wool, this loft insulation roll is ideal for irregular spaces and attic voids. It offers excellent thermal performance, and easy handling, and helps reduce heat loss from your roof.

Why Choose a 150mm Insulation Board?

• Enhanced Thermal Efficiency: The 150mm thickness provides superior resistance to heat flow, ensuring your spaces remain warm in winter and cool in summer.
• Energy Cost Savings: By minimising heat loss, these insulation products contribute to significant reductions in energy bills over time.
• Versatile Applications: Ideal for a range of projects, including residential, commercial, and industrial buildings, offering flexibility in application.
• Compliance with Building Regulations: Our 150mm insulation products help meet and exceed current building standards for thermal performance.​

Applications of 150mm Insulation Board

Our 150mm insulation board is suitable for various applications:​

• Floor Insulation: Enhance underfloor heating efficiency and reduce ground heat loss.
• Wall Insulation: Improve thermal performance of external and internal walls.
• Roof and Loft Insulation: Maintain consistent indoor temperatures by insulating pitched or flat roofs and loft spaces.

How to choose the perfect Insulation Board?

For Specialised Floor Insulation:

• Select: Kingspan Thermafloor TF70 or Enhanced EPS insulation board.
• Application: Ideal for preventing ground heat loss and maintaining a warm and stable environment within living spaces.

For Sturdy Flat Roof Insulation:

• Select: Kingspan Thermaroof TR26 or Celotex Crown-Up insulation board.
• Application: Perfect for insulating flat roof structures to prevent heat escape and protect against external elements.

For Attic and Loft Applications:

• Select: ODE Starflex Loft Roll.
• Application: Ensuring thermal consistency across the entirety of the loft space, acting as a blanket of thermal protection beneath the roofing structure.

Why Shop with Insulation4Less?

When it comes to buying 150mm insulation, Insulation4Less is a trusted destination for both homeowners and trade professionals. We offer an extensive range of top-tier brands, including Celotex, Kingspan, Recticel Eurothane GP, and Xtratherm, ensuring every insulation board in our collection delivers high thermal performance and long-lasting reliability. Our competitive pricing—displayed inclusive of VAT—means you can shop confidently without any hidden fees. Our fast and dependable UK delivery ensures your order arrives on time, every time. For those buying in bulk, we also provide exclusive trade discounts and personalised quotes to help you get more value out of your budget. Whether you're insulating a wall, floor, roof, or loft, our friendly support team is always on hand to offer expert advice, technical product specifications, and guidance tailored to your project. With easy-to-use filters, secure checkout, and detailed listings across the website, shopping for rigid insulation boards has never been more straightforward.