TRADE Premium XPS Cavity Closer – 100–150mm
The
TRADE Premium XPS Cavity Closer – 100–150mm is a high-quality, thermally efficient solution designed to close wider cavities around window and door openings in masonry and timber frame constructions. Manufactured from rigid
extruded polystyrene (XPS) insulation, this cavity closer provides excellent thermal performance, preventing cold bridging and helping to improve the overall energy efficiency of your building.
Engineered for versatility and ease of use, this premium closer fits cavity widths from
100mm to 150mm, making it ideal for modern, energy-conscious builds with wider wall cavities. It is lightweight, easy to handle, and simple to cut to size, ensuring quick and accurate installation on-site.
Perfect for both new builds and refurbishment projects, the TRADE Premium XPS Cavity Closer delivers a professional finish around window and door reveals while meeting the latest building regulation requirements for thermal performance and airtightness.
Product Features
Made from
high-density extruded polystyrene (XPS) for superior thermal insulation.
Adjustable design fits cavity widths between
100mm and 150mm.
Prevents cold bridging and enhances energy efficiency.
Lightweight and easy to install – cut to length and fit directly into the cavity.
Suitable for
both masonry and timber frame constructions.
Provides a
clean, durable finish around window and door openings.
Typical Applications
Closing cavities around doors and windows in masonry and timber frame walls.
New build and retrofit insulation projects.
Use in energy-efficient and low-U-value wall constructions.
Ideal for wider wall cavities up to 150mm.
Technical Information
Material: Extruded Polystyrene (XPS)
Adjustable Cavity Range: 100–150mm
Application: Thermal cavity closure for window and door reveals
Construction Types: Masonry and timber frame
Installation Tips
Cut the cavity closer to the required length and insert it snugly into the cavity around the opening. Ensure the closer is flush with the outer leaf before fixing. Follow standard installation practices and manufacturer recommendations to achieve optimal thermal and structural performance.
FAQs
What is the purpose of a cavity closer?
A cavity closer seals the open cavity around window and door reveals, preventing heat loss, cold bridging, and damp penetration — helping to improve the thermal efficiency and durability of the wall.
What cavity sizes does this product fit?
This model is designed for wider cavities, fitting between
100mm and 150mm, making it ideal for modern, high-insulation wall designs.
Is this cavity closer suitable for both new builds and refurbishments?
Yes. The TRADE Premium XPS Cavity Closer is suitable for use in both new construction and retrofit applications, providing flexibility across different project types.
Can this be used in timber frame walls?
Absolutely. This product is suitable for both
masonry and
timber frame wall systems, offering universal performance and easy installation.
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