The Complete Guide to Exterior Foam Insulation for Energy-Efficient Roofs
By Graham Mann | Published: 11/15/2025
Learn how exterior foam insulation can enhance your roof's energy efficiency, reduce costs, and improve indoor comfort with this comprehensive guide.
The Complete Guide to Exterior Foam Insulation for Energy-Efficient Roofs Exterior foam insulation transforms your roof into an effective barrier against energy loss, helping you save on heating and cooling costs. By attaching rigid foam boards to the outside of your roof, you can reduce heat transfer, improve indoor comfort, and lower your home's energy use. Here's what you need to know: - How it works: Foam boards create a continuous thermal shield, covering gaps and reducing heat escape. - Types of foam: Choose from Polyisocyanurate (Polyiso)(https://diyecohomes.com/blog/polyiso-insulation-pros-cons-when-to-use/), Extruded Polystyrene (XPS)(https://diyecohomes.com/blog/polyiso-vs-eps-vs-xps-foam-board-energy-efficiency/), or Expanded Polystyrene (EPS) based on your climate and budget. - DIY-friendly: With the right tools and safety measures, you can install foam insulation yourself(https://diyecohomes.com/blog/install-exterior-foam-roof-insulation-the-right-way/) and achieve profess...
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