Floor Insulation: Everything you need to Know

What is floor insulation?

Floor insulation involves adding an insulating material beneath or over the concrete or timber floor. Generally, only the ground floor requires floor insulation, as floors above heated spaces don’t need insulating. Exceptions to this being any floor in your home above an unheated space, such as an extension over a garage. Floor insulation can be for the two types of floors: solid, concrete floors or suspended floors. For the ground bearing concrete slab solid floors, insulation can be above or below depending on whether you fitting the concrete floor or it’s an existing one. If below, then thermal capacity of the house is improved, allowing for the maintenance of an even temperature. If above, the building will heat up more quickly. It is common also to plu any gaps between the floor and walls to ensure draught removal.

Why Insulate Floors?

Heat escapes through a floor if it is not insulated. This means houses are less energy efficient, which increases fuel costs as well as contributing to CO2 emissions. Houses are warmer in the winter when better insulated. About 15% of heat loss from a house is believed to be through the floor.

How much money does floor insulation save?

All forms of insulation save the homeowner money on fuel bills by preventing unnecessary heat loss. Approximations of savings for floor insulation vary but the Energy Savings trust say it’ll save you about £40 per year

What is Suspended Floor Insulation?

This is floor insulation for suspended floors. Many traditional timber floors and some concrete floors are built suspended above the foundations. Suspended concrete floors entail a concrete slab where the entire perimeter or two sides are supported by either walls, columns and most commonly concrete beams which carry the weight of the slab. Wooden floors, by contrast, are traditionally held above foundations by solid timber joists. Modern timber floors however will more likely be supported by metal or I joists. For such floors, the insulating material will be added as a layer between the joists or over or inside the beams. This site offers innovative floor insulation for suspended concrete floors. EPS insulation units fit snugly inside concrete T-beams removing the need for concrete blocks, or can fit over or below. They can reach an excellent U-Value of 0.06, well below the recommended minimum requirement. You can see more about how Beamshield’s suspended floor insulation works on our home page.

What is Solid Floor Insulation?

This is insulation for a solid floor, which usually entails a layer of concrete at surface level with solid filling below it, so there’s no hollow spaces as with suspended floors. These can be insulated below when built or above when already installed

How long will floor insulation last?

Both weather and age will degrade insulating materials over time but you should be looking at getting a few decades of life out of your insulating materials. One of the selling points of the Beamshield Plus suspended floor insulation is that its guaranteed to last the lifetime of the building. See the performance details

What are U values and How do they relate to Floor Insulation?

U values are an insulation measurement. They tell you how effective the material is for insulation. The lower the U value means the more effective insulation as it’s measuring the rate of heat transference through a square metre. Therefore, the higher the u value means less effective insulation.

What U value does an insulated Floors need to be?

In England and Wales, it is recommended that your insulated floor achieves a U-value of 0.25 W/m2K or less. Local building control offices can advise on how to do this and the exact requirements. Click here to find your nearest local building control office.

What does W/m2k mean?

W/m2k is the unit of measurement for the rate of heat passing through a material. It literally stands for rate of heat flow -watts – through 1 square meter for a temperature gradient of one kelvin or one centigrade.

What is EPS Insulation for Floors?

EPS stands for expanded polystyrene and is a popular insulating material for floors. It is a white foam insulating material made from expanding polystyrene polymer, using a mould that contains small foam beads. Heat is then applied resulting in expansion that fuses the foam together. It is popular due to being energy efficient, low cost and strong with a long-lasting R value.

What is XPS Floor Insulation?

XPS stands for Extruded polystyrene insulation
And like EPS is a polystyrene material. But rather than being small beads fused together is a molten material extruded through dies and expands upon cooling.

What is R value in regard to floor insulation?

The insulating materials resistance to heat flow constitutes its R value. The higher the R value the greater the effectiveness of the material.

What about Psi values and Floor Insulation?

Psi values are similar to U values in that they measure heat loss, but unlike u values which only measure loss through a thermal element, they do this through a junction of two elements e.g. between your floor and the wall skirting board. Heat loss from such junctions is called non repeating thermal bridging. If you have junctions when insulating floors, it makes sense to factor in both Psi and U values.

About Beamshield Suspended Floor Insulation

Beamshield Plus is an eco-friendly suspended floor solution that is 100% recyclable. Unlike other providers of insulated t-beams for suspended floors, Beamshield is completely bespoke, providing high-strength EPS insulation for a customer’s exact need. Significantly, it fits perfectly between concrete T beams meaning you don’t require concrete blocks. With outstanding thermal efficiency, durability and BBA certification, Beamshield are the quality, low cost floor insulation solution you need.

Please send your building project enquiry today and make sure you download the Beamshield suspended floor insulation brochure

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