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Podcast Episode

#22 The Truth About Garage Door U-Values - Does Insulation Actually Matter

The Garage Door Installers Podcast··18 August 2026·17 min

About this episode

We all know the terminology.Insulated panels.Thermal performance.U-values.Thermal breaks.But how much do those numbers actually mean when you're standing in front of a customer's garage?And how do you know whether you're comparing garage doors properly?In this episode of the Garage Door Installers Podcast, James takes a proper look at the thermal performance of garage doors - from basic single-skin up-and-over doors through to insulated roller doors, sectional doors and side-hinged doors.Because the customer doesn't necessarily care that a door has a particular U-value.They care that their garage is freezing.They care that the room above the garage is cold.They care about making their garage more comfortable.And that's where understanding the product properly allows you to have a much better sales conversation.In this episode we cover:What a U-value actually meansWhy lower U-values represent better thermal performanceThe difference between a panel U-value and a complete-door U-valueWhy thermal bridging and seals matterHow different types of garage doors compare thermallyReal-world examples of heat transfer through a garage doorWhy an insulated door doesn't automatically make a garage warmWhen thermal performance really matters to a homeownerSectional doors and why they can offer excellent thermal performanceInsulated roller doors and the importance of looking at the complete systemWhy side-hinged doors can produce very different panel and complete-door figuresHow to avoid being misled by impressive-looking brochure figuresHow installers can turn technical specifications into better sales conversationsGot a topic you'd like us to cover?We're building the Garage Door Installers Podcast around the things that actually matter to people working in the industry.If there's a product, installation technique, business problem, sales issue or industry subject you'd like James to get into, get in touch and let us know.Garage Door Installers PodcastReal products. Real installations. Real businesses. Real experience.Our SponsorsThe Door Industry JournalThe Door Industry Journal is the only trade magazine targeted towards the Garage Door Industry. To receive the magazine and weekly newsletter for no cost send your details to pr@cvgroup.co.uk to get added to the distribution list.ToolTradeFor top branded products at competitive prices, speak to ToolTrade. A leading provider of tools, fixings and sealants. To open a trade account and have some customised pricing email your enquiry to info@tool-trade.co.uk