An fully insulated cavity closer is a reliable and cost-effective way of closing gaps around window and door frames in either masonry or timber frame construction, helping meet Building Regulations while also protecting against damp penetration, condensation and air infiltration.
Insulation Express’ selection of insulated cavity closers provides an effective damp proof course and thermal barrier between any frame, jamb or sill opening. They are long-lasting, resistant to decay and easy to install.
Insulation
Insulating cavity walls is one of the best ways to lower energy bills and carbon footprint. Professional installers will inject insulation through small drill holes into walls.
Insulated cavity closers are designed to minimise thermal bridging at window and door reveals in masonry cavity walls, making them simple to install following manufacturer guidelines and featuring pre-cut grooves for insulation, additional weather seal, and embossing for greater mortar adhesion.
Soundproofing panels also provide great soundproofing capabilities and help prevent condensation, mould, and staining around windows and doors. Available in various sizes to meet various reveals found in masonry buildings, some models meet Building Regulations Part L for conservation of fuel and power requirements and come complete with additional insulation for maximum thermal performance – ideal for new builds as well as retrofit projects looking to meet sustainability standards.
Water Resistance
Moisture trapped within wall cavities can lead to many issues, including mould growth, condensation and damp rot. Wet insulation loses its R-Value meaning that it no longer provides effective insulation. Furthermore, moisture causes building materials like timber, traditional paper-faced gypsum plasterboard and steel to deteriorate or corrode over time.
Insulated cavity closers can provide a solution to the common issue of damp and mould around windows and doors, often blamed on their frame itself but usually caused by poor air tightness or cold bridging.
Fire-rated insulated cavity closers can help stop water penetration around windows and doors as mandated by Part C of the Building Regulations, enabling frames to be set back at least 30mm from the wall while still sealing around it. In addition, they also close gaps between brickwork layers which help comply with Part L of the regulations.
Fire Resistance
Cavity closers can be used as part of a passive fire protection system. They abut walls and restrict combustible materials within wall cavities, delaying failure of steel or concrete elements during an event of fire.
Insulated cavity closers can also help slow the spread of fire in your home, providing more time for escape and lessening property damage by decreasing both the rate of wall destruction by fire and the heat generated from flames.
Insulation Superstore has a wide range of fireproof insulation cavities closers that are suitable for use across a range of construction types and thicknesses. Each product has been independently tested to meet or surpass 30 minutes or one hour fire resistance ratings; first fix options can be installed prior to building brickwork while second fix solutions may be fitted after construction has completed.
Installation
Construction projects requiring masonry walls must include a cavity closer in order to meet minimum standards. Unprotected reveals are vulnerable to water infiltration which may cause damp, condensation and mould growth if left exposed, leading to damp, condensation or mold growth.
An insulated cavity closer is an effective solution to this issue, not only by blocking water ingress but also with their additional layer of insulation which reduces heat transfer and cuts energy costs.
Insulated cavities closers come in various widths to meet different project requirements and satisfy Building Regulations. They’re often installed as 1st fix but could also be used during replacement window installation; when selecting one as a 1st fix solution it’s essential that its compatibility with your system of choice is considered when making your choice – including making sure any services, ventilation ducts or flues are isolated from its insulation layer and using fireproof models in compliance with Building Regulations Part C and B regulations.