Underfloor Insulation – Cutting Some from your Heating Bills

Underfloor insulation is one needed task to cut down on your energy expenses. It is actually one of the three places (the other two are the walls and the roof) usually neglected to be insulated. If you have a suspended wooden floor or a concrete one, you need to insulate it to save on your yearly heating bills.

To do it correctly, have some professionals do the insulation job even if it means spending some. (You can get some financial help if you don’t have the budget at present. The nice part is that it is a one-time expense compared to the yearly amount you pay to keep your floor (and your place) warm.

Type

Before anything else, find out the exact type of your floor. You can get to know it in two ways. Check the basement and if there are wooden joists and other parts of your floor’s underside, you have a suspended timber floor.

Most likely, is that you have this floor type if there are ventilation bricks on the outside of your house below the floor level. If you cannot access the space underneath your floor, you need to lift a corner of the carpet and the underlay.

 Building codes

Like in most instances, you need to check and follow the building codes of your locality before doing any changes to your home. One of them is adding extra insulation to your existing floor and you need to have some considerations to check into.

The first one is having to ensure that the ground floor rooms meet the minimum room heights. The next one is you need to achieve the minimum u-value (standard thermal performance measure) and that you need to minimize the risk of fire.

The best way is to get the advice of building control officers of your locality before doing anything.

Timber floor

The first to need repair are anything that is damaged by damp, rot or infestation before doing any mother type of work. If your floor is above an unheated cellar, you need to fit the insulation tightly between the joists and secure the netting if need be.

Next is fixing the plasterboard to the basement’s ceiling to allow fire resistance. If the floor is not possible to be entered from below, take up the floorboards to fit the insulation.

Concrete floor

If the insulation is over the slabs, your rooms will warm up faster when the hearting is switched on. Keep the thickness of your insulation to a minimum to reduce having costly alterations on doors, stairs and other part because of the increase in the floor height.

If you insulate your floor beneath the concrete, you can help regulate the temperature and prevent overheating because of the thermal mass of the concrete materials.


You might need an additional damp-proof membrane if you have one and it is placed above the slabs. This is to protect it from ground contaminants. Underfloor insulation is not much difficult to install. If you are a carpenter, you can do it yourself and save some. 

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