Ecotherm
EcoTherm Eco-Cavity 0.45m x 1.2m - All Thicknesses
EcoTherm Eco-Cavity 0.45m x 1.2m - All Thicknesses
SKU:etcav50
Est Delivery between 6th Feb and
12th Feb.
The option you have selected may be in short supply. To make an enquiry please call us on 020-3936-2839 or email us at sales@i4lgroup.co.uk.
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project
- Shipping protection for peace of mind
- Fast processing and delivery
- Flexible delivery options


Product Information
The Eco-Cavity is a high-performance, partial fill cavity wall insulation board, engineered to offer an optimal balance between thermal insulation and moisture resistance. Measuring 0.45m x 1.2m, each board is crafted to seamlessly integrate into standard masonry constructions, ensuring a snug fit and easy installation, compared to some other commonly used insulants.
Key Features:
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Thermal Conductivity: Boasting a thermal conductivity of just 0.022 W/mK, Eco-Cavity ensures your building retains heat more effectively, reducing energy bills and enhancing occupant comfort throughout the year.
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Partial Fill Solution: Specially designed for use within partial fill cavity walls, Eco-Cavity maintains a vital air gap between the insulation layer and the masonry outer leaf, providing a robust barrier against external moisture and enhancing the building's longevity.
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Lightweight and Easy to Handle compared to some other commonly used insulants: Despite its robust performance, Eco-Cavity is remarkably lightweight, simplifying logistics and handling on-site, and allowing for quick, efficient installation.
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High-Performance Core: At the heart of each board lies a rigid polyisocyanurate (PIR) insulation core, known for its excellent thermal insulation properties and durability.
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Dual Aluminium Composite Foil Facing: Eco-Cavity features an aluminium composite foil facing on both sides, bonded during the manufacturing process for added durability and moisture resistance.
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Compatibility: Eco-Cavity boards are designed to work in harmony with brick and block dimensions, facilitating the insertion of wall ties at appropriate intervals and ensuring a secure, effective installation.
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Euroclass Rating: Under System 4 AVCP, Eco-Cavity has a Euroclass rating of F.
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Compressive Strength: With a compressive strength of 140 kPa when tested at 10% compression according to BS EN 826: 2013.
Whether you're a professional builder, architect, or a homeowner looking to upgrade your property's thermal efficiency, the Eco-Cavity Insulation Board is your go-to choice for a cost-effective, high-performance insulation solution.
Pros & Cons
Pros
- High performance with a conductivity of 0.022 W/mK, leading to enhanced energy savings and improved indoor comfort.
- Designed for partial fill cavity walls, allowing for a residual air gap that acts as a barrier against moisture penetration, thus protecting the structural integrity of the building.
- Lightweight and easy to handle compared to some other commonly used insulants, facilitating transport and installation, which can speed up construction timelines and reduce labor costs.
- High-performance rigid polyisocyanurate (PIR) insulation core offers durability and long-term thermal performance.
- Aluminium composite foil facing on both sides enhances moisture resistance and durability, further protecting the insulation core.
- The requirement for a residual air gap, while beneficial for moisture prevention, may not be optimal for projects requiring full-fill insulation solutions to meet specific energy efficiency or building regulation targets.
- While the compressive strength of 140 kPa is suitable for many applications, extremely high-load areas might require a product with greater compressive strength to avoid compression or deformation over time.
Frequently Asked Questions
Eco-Cavity is specifically designed for use in partial fill cavity wall insulation applications. It is ideal for enhancing thermal efficiency in masonry walls while maintaining a clear air gap to prevent moisture penetration.
No, Eco-Cavity insulation is intended for partial fill applications. Its design includes maintaining a residual air gap between the insulation and the masonry outer leaf, which is crucial for its moisture barrier properties.
Eco-Cavity has a low thermal conductivity of 0.022 W/mK, meaning it effectively reduces heat transfer through the walls. This improves the building's energy efficiency, leading to lower energy bills and enhanced indoor comfort.
Yes, Eco-Cavity is lightweight and easy to handle compared to some other commonly used insulants, making it convenient for transport and installation. Its dimensions are coordinated with brick and block sizes, facilitating easy insertion of wall ties at appropriate intervals.
It has a Euroclass rating of F
The aluminium composite foil facing on both sides of Eco-Cavity enhances its moisture resistance and durability. This protective layer is bonded to the insulation core, ensuring long-term performance and protection against environmental elements.
Yes, the design of Eco-Cavity includes an air gap that acts as a barrier to external moisture penetration, making it suitable for use in areas where moisture management is a concern.
Eco-Cavity has a compressive strength of 140 kPa when tested at 10% compression according to BS EN 826: 2013. This makes it suitable for a wide range of applications, though high-load areas may require additional considerations.
Technical Specifications
Applications | Masonry Walls |
Brand | Ecotherm |
Compressive strength | 140 kPa |
Length | 1200mm |
Material type | Polyiso |
Reaction to fire | Euroclass F |
Thermal conductivity | 0.022 W/mK |
Width | 450mm |
Datasheets
Delivery Information
Est Delivery between 6th Feb and
12th Feb.


Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact delivery charge will be calculated at checkout based on your order and location.
Frequently asked questions
Can you help me pick the right insulation for my project?
Yes, of course!
Our team is ready to assist you with any questions and queries you may have.
Just reach out to us via any of the following methods:
Call us: 020-3582-6399
Email us: sales@i4lgroup.co.uk
or click the Livechat tab at the bottom of your screen.
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
Do you really have the best prices online?
Yes! We even have a price match guarantee.
We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.
If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.
Read more: Price Match Guarantee
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Can I open a trade account?
Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a Trade Account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3582-6399 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns
What is your returns policy?
Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.
To avail of this your order must be unused, in its original packaging, and suitable for resale.
Refunds are issued immediately after the goods are received and inspected by our team.
If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.
Prior approval is needed before returning any goods – do not return without authorization.
Special order items are exempt from returns.
Read more: Returns
Why Choose Us?
Factors |
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Other Stores |
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Customer service | Easy to reach, and eager to help | Difficult to contact |
Shipping speed | Fast and organised | Unpredictable |
Competitive pricing | Price match guarantee | What you see is what you get |
Loyalty program | Points + exclusive deals | Basic discounts |
Expert advice | Free 1-on-1 sessions | Self-service only |
Trade accounts | Bespoke pricing, trade credit, and dedicated account manager | none available |