Suspended floors are common in older properties. Because of the crawl space beneath the floor, rooms can be susceptible to heat loss and may feel draughtier than rooms with a solid floor, such as concrete.
Thankfully, Insulation Express has a wide variety of suspended floor insulation products to choose from. Used to seal any gaps between joists and battens, suspended floor insulation will prevent draughts and increase the energy efficiency of your home.
Usually, the insulation used is a soft material such as mineral wool, but there are other options available. From polystyrene to foil and boards, you’ll find the perfect floor insulation solution for your needs.
Benefits of Suspended Floor Insulation
Keeps out cold air and reduces heat loss through the floor.
Makes older properties more energy efficient.
Reduces your carbon footprint.
What is suspended floor insulation?
Suspended floor insulation is a special type of floor insulation designed to be installed in the crawl space underneath a floor. It can be installed between wooden beams or on the underside of a concrete floor to reduce the amount of heat lost through the floor.
What thickness insulation for suspended floor?
The thickness of your suspended floor insulation will depend on your specific project. However, if you’re laying a new floor or are replacing half or more of a floor in England or Wales, you must adhere to your local building regulations.
In England and Wales, a U-value is a measure of how quickly heat travels through the floor. In order to comply with regulations, the floor must have a U-value of 0.25 W/m2K or less. Usually, this will require at least 70mm of high-performance foam insulation or 150mm of mineral wool, although this may vary by project type.
Is it worth insulating a suspended floor?
Installing underfloor insulation on your suspended floor is a tried-and-tested way of reducing heat loss within your property. According to estimates, around 10-20% of a building’s heat is lost through its floor. Installed correctly, suspended floor insulation can reduce this heat loss to close to zero.
Depending on the type of floor you have, installing suspended floor insulation can be straightforward. If you have a basement, the underfloor insulation can be installed with minimal upheaval. If you don’t have a basement then the floorboards will need to be raised to allow the insulation to go beneath.
What is the best insulation for a suspended floor?
The best suspended flooring insulation is one that is breathable. Choosing breathable insulation will protect the wood of your flooring from moisture, whereas non-breathable insulation will retain moisture which could lead to the eventual rotting of the wood.
What types of suspended floor insulation are available?
There is plenty of choice in our range of suspended floor insulation, featuring top brands such as Pavatex, Marmox and more.
Our range of Marmox Multiboard is a lightweight, affordable option when installing underfloor heating or adding dry lining to cellars. Our Pavatex Pavaflex packs are designed for use around studs, rafters, and joists. Available in a selection of sizes and thicknesses, it offers the flexibility you need to get a good fit.
Jabfloor polystyrene insulation boards are versatile and can be used below ground supported slabs, above slabs below chipboard, above slabs below screed and with precast suspended concrete.
Likewise, our Stylite polystyrene insulation boards can be used below a concrete slab, screed, or chipboard floor.