ISOVER Cavity Wall Insulation Slab CWS 32 – 150mm Thickness (Covers 2.73 m²) 1200mm x 455mm
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30 in stock
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The ISOVER CWS 32 Cavity Wall Insulation Slab is a premium-quality glass mineral wool insulation designed to deliver exceptional thermal efficiency, acoustic performance, and long-lasting durability for masonry cavity walls. With a 150mm thickness, this slab provides outstanding energy-saving benefits, helping to reduce heat loss through external walls while maintaining a comfortable indoor environment all year round.
Manufactured using ISOVER’s advanced technology, the CWS 32 slab achieves a low thermal conductivity of 0.032 W/mK, making it one of the most efficient insulation materials available for cavity wall construction. Each slab measures 1200mm x 455mm, with a total pack coverage of 2.73 square metres, allowing for quick and easy installation with minimal waste.
Engineered from glass mineral wool containing up to 75% recycled materials, this product is lightweight, easy to handle, and simple to cut to size. It fits snugly between wall ties, ensuring a continuous layer of insulation without gaps or thermal bridges. The slabs are also water-repellent yet fully breathable, allowing moisture vapour to pass through while preventing water penetration across the cavity.
Ideal for both new build and refurbishment projects, ISOVER CWS 32 helps buildings meet modern Part L Building Regulation requirements for energy efficiency and sustainability. Its excellent acoustic properties also help to reduce noise transmission, contributing to a quieter, more comfortable living environment.
Key Features & Benefits
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Exceptional Thermal Performance: λ = 0.032 W/mK for maximum energy efficiency.
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Superior Acoustic Insulation: Reduces airborne sound between external walls.
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Sustainable Choice: Made from up to 75% recycled glass; fully recyclable at end of life.
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Water-Repellent & Breathable: Prevents water penetration while allowing vapour movement.
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Easy Installation: Lightweight, rigid slabs that friction-fit between wall ties.
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Fire Safety: Non-combustible Euroclass A1 reaction to fire rating.
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Durable & Long-Lasting: Retains insulation performance over the building’s lifetime.
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Building Regulation Compliant: Meets requirements for modern energy-efficient construction.
Delivery Information:
We aim to process and dispatch all orders within 1-2 business days on local delivery. Once your order has been shipped, you will receive a confirmation email.
Please note: Delivery times may vary due to external factors such as customs delays or high-demand periods.
Nationwide Delivery varies with supplier: We will have this disclosed on specific products from our suppliers on their delivery times.
Local Shipping Costs:
Shipping costs are calculated at checkout based on your location and order weight. We offer free shipping on orders over £150.
Returns & Refunds Information:
We want you to be happy with your purchase. If you're not satisfied, we accept returns or exchanges within 14 days of delivery.
To be eligible for a return:
· The item must be unused, in original condition, and in original packaging.
· Proof of purchase is required (e.g., order number or receipt).
· The customer must return the product to store.
Return Process:
1. Email us at [email protected] with your order number and reason for return.
2. Once approved, you will receive a refund.
Refunds:
Refunds will be processed within 3-4 business days after we receive your returned item. The refund will be issued to your original payment method.