Skip to main content

How Preventing Air Leakage Through Downlights Can Cut Energy Bills

Downlight from Loft Leg
The Loft Lid covers the back of the light, and can be fixed easily with a high-quality sealant. This eliminates air leakage and heat loss. (Image credit: Loft Leg)


In order to reduce energy bills and increase the energy efficiency of our homes, there is increasing focus on the effectiveness of the insulation and airtightness measures we install. One area that needs particular attention is between the ceiling and the loft space.

With the popularity of downlights fitted into ceilings in modern homes, it can be difficult to maintain desired levels of airtightness. Downlights can allow heat to escape through the fittings, and, as they project through the ceiling into the loft, they can provide an obstacle for the smooth laying of insulation. UK building regulations require that loft insulation should be laid continuously and downlights can stop this from happening leading to cold spots.

If your loft insulation isn’t working to its full potential then you will experience higher levels of heat loss, making your home feel cold. Running your heating system for longer in order to maintain a comfortable internal temperature will increase your energy bills, which most of us are constantly trying to avoid.

In order to combat this problem, whilst you can focus on the quality and effectiveness of your insulation, you also need to pay particular attention to those smaller joints and openings through which air can escape. Air leakages are often found in joints where there may be small openings, such as around the loft hatch or above light fittings.

There are many solutions available (such as LoftLeg’s Loft Lid) that can create a protective cover over downlights to not only allow loft insulation to be installed smoothly over the top without posing a fire hazard, but also to eliminate heat loss and air leakage through the ceiling. These covers prevent direct contact between the loft insulation and the downlight while also allowing for sufficient ventilation around the light for heat dissipation. They also act as an effective dust and pest/insect seal.

Downlight from Loft Leg

The cover creates a barrier between the light and the insulation, which prevents heat build-up and fire risk. It allows insulation to be installed around and over the lid, for the best possible insulation (Image credit: Loft Leg)

These covers work with most downlights, are easy to install (simply use the recommended sealant), and can be fitted close to joists and trusses if necessary.  The Loft Lid is compliant with current Building Regulations and tested to all relevant British Standards.

To find out more about Loft Lid, or to check out other products available from Loft Leg, simply head to its website (opens in new tab) or call 01282 861001.