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Marmox Thermoblock

The new Building Regulations, published in 2010, aim to cut the CO2 emissions of structures by an additional 25 per cent compared to the previous standards from 2006.

One of the easiest and most affordable ways to significantly cut the amount of energy used by a home, office building or public premises is by making use of effective insulation products - and the Thermoblock from Marmox is one solution that can certainly make a difference.

What is thermal bridging?

Wherever two different building materials come together in a construction, heat will transfer to the more conductive substance (that is, the one with the lower R-value). This can often result in the heat escaping from the building envelope.

This is called thermal bridging and it is most commonly found in places where the wall meets the floor.

Because they are extremely thermally conductive, floors are usually one of the coolest surfaces in a room. When they meet with the wall, the heat that the wall would otherwise be keeping in can slowly begin to dissipate through the floor and out of the building.

This loss of heat can result in increased power bills and the building having a higher carbon footprint.

Thermoblock was created to provide an easy, affordable and effective solution for the problem of thermal bridging.

Manufactured from fire-resistant extruded polystyrene (XPS), Thermoblocks are placed between materials with differing R-values during construction. The positioning of the blocks prevents thermal bridging from occurring and therefore cuts down on the amount of energy required to keep the building warm.

Is Thermoblock right for your project?

As standard, Thermoblocks measure 65mm high, making them perfect for use with brickwork. There's also a thicker version available, which offers an R-value of two and is 80mm high. Both options are offered in 100 and 140mm widths.

The product is BBA-certified and has a minimum compressive strength of 6.5 N/mm2, this makes Marmox Thermoblock suitable for use in supporting walls. Marmox Thermoblock offers a thermal conductivity of between 0.052 and 0.75 W/mK so is compliant with Part L of the Building Regulations for England and Wales and Section 6 of the Scottish Building Standards. Its ability to prevent thermal bridging can also help to achieve a rating of 4 in the CSH (Code for Sustainable Homes).

When installing Thermoblocks, they should be placed at the base of the wall, with the top surface below floor level.

Not only does Thermoblock help to avoid thermal bridging, but it also creates a moisture barrier. The blocks should not, however, be used as an alternative to a damp proofing course.

Marmox - the insulation experts

Here at Marmox, we are experts in providing sustainable and cost-effective building products to construction and refurbishment professionals around the UK.

As well as Thermoblock thermal bridging, we offer curved boards and pipe boxing for waterproofing and insulation. Shower base systems for wet rooms are also available.

Whether you're interested in making a building more environmentally friendly, or simply cheaper to keep warm in the winter, Thermoblock could be the perfect solution to thermal bridging problems.

Our products are available through a network of stockists located around the country. You can also find out more by downloading PDF brochures about our products.

We can even help you keep up with the latest insulation news, including new products and changes to regulations.

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