Shutter Spec Security Blog

Which Garage Door Offers The Best Insulation

Posted by Andrew Levick on Oct 24, 2018 10:18:00 AM


With up to 25% of your property’s warmth being lost through an integrated garage, the demand for garage door insulation is rising fast. 

When you consider the icy weather we endured last winter, it comes as no surprise to learn that more and more customers are demanding well-insulated garage doors. The traditional up and over garage door does little to keep out the cold or prevent leaves and dirt blowing in, making your garage a very unappealing space. Luckily, insulation and weather sealing technology have come on by leaps and bounds over the last few years and there are now many options to help you improve the energy efficiency of your home. Here, we take a look at which types offer the best insulation. 


Sectional Garage Doors

Split into individual sections, this vertically rising type of door can be constructed from 42mm thickness steel panels and offers the best levels of insulation available among standard domestic style garage doors. Extremely good U values can be achieved when sectional garage doors are correctly installed behind the aperture of the garage: due consideration must be given to the floor levels to create the best seal possible and a full overlap at the head and sides should be created to form a thermal break. Expert advice and installation without cutting corners is the key: all too often, you find a door has 42mm panels up to say 2m in height and then a single skinned fascia layer filling in the gap as far as the lintel. Of course, this works fine as a seal for the garage opening but does not provide the optimum insulation levels, so bear this in mind if reducing your energy bills and protecting your property from freezing is your main objective.


Click here to read everything you need to know about garage doors


Roller Garage Doors

Roller garage doors are constructed from numerous (on average, 24) horizontal double-skinned slats with small gaps between them, so it is almost impossible to get an accurate reading of U values on this type of garage door. These insulated slats are 15 millimetres thick and have the advantage of providing both strength and insulation, but the levels of insulation achieved differ greatly depending on many other factors. By installing brush type or rubber weather seals on the head fascia or in the guides you will improve the insulation: a hood cover and generous overlaps for the door slats will also help, but you will still not be able to obtain a true U-value reading. Another point to be aware of is quality: some brands or roller doors has thinner slats than others and this is often not made clear in sales material, so it is important when getting quotes that you are comparing like with like. 


Side-Hinged Garage Doors

Steel possesses quite good insulating properties so a well fitted, traditional steel side hinged garage door with the correct framework seals will give good U-values, depending of course of the thickness of steel used.  
Shutter Spec Security offer a range of made to order side hinged doors in a range of steel and timber door styles.  The door leaves themselves are formed from premium quality panels of single skin or foam filled steel, 42mm in thickness. With a wide range of colours and styles, these side hinged doors are a popular option when the garage is going to be used as a gym, workshop, playroom or office. 

Up and Over Garage Doors

The design of up and over garage doors is such that the door moves through the subframe as it is opened, so there is necessarily a gap all-round the perimeter. Up and over doors can be given extra insulation with the addition of insulation boards, weather-strips and door stops but they will never achieve the levels of insulation possible with the options discussed above. 

To sum up, we would strongly recommend that if you are looking for the best levels of garage door insulation, you should consider our double skinned sectional doors. For even greater protection from the elements, the door should be fitted behind the garage aperture.


To find out more about insulated garage doors and to discover the latest prices, please give us a ring on 01844 212152.


Garage Doors


Topics: Property, Security, Garage Door