Insulating a Garage: How to Insulate the Walls, Ceiling and Floor

inside of an empty garage
(Image credit: getty images)

Insulating a garage is not a complicated process, often easier than insulating the house, but to get it right, you need to know how the garage is constructed and the reason for insulating it.    

If an integral garage is making the bedroom above it (or the lounge beside it) cold, what you actually want to do is insulate the house from the garage, as you're not particularly looking to keep the garage warm but rather to prevent it affecting the comfort in adjacent rooms. 

Tim Pullen

Tim is an expert in sustainable building methods and energy efficiency in residential homes and writes on the subject for magazines and national newspapers. He is the author of The Sustainable Building Bible, Simply Sustainable Homes and Anaerobic Digestion - Making Biogas - Making Energy: The Earthscan Expert Guide.

His interest in renewable energy and sustainability was first inspired by visits to the Royal Festival Hall heat pump and the Edmonton heat-from-waste projects. In 1979

this initial burst of enthusiasm lead to him trying (and failing) to build a biogas digester to convert pig manure into fuel, at a Kent oast-house, his first conversion project.

Moving in 2002 to a small-holding in South Wales, providing as it did access to a wider range of natural resources, fanned his enthusiasm for sustainability. He went on to install renewable technology at the property, including biomass boiler and wind turbine.

He formally ran energy efficiency consultancy WeatherWorks and was a speaker and expert at the Homebuilding & Renovating Shows across the country.