SUMMIT GROUP

External Insulation & Thermal Mass Properties of Solid Wall Buildings

by Summit MattersStandards of Building, The Science of Building, Traditional Build Methods December 3, 2025December 3, 2025Comments are Disabled

When upgrading older homes, one of the most effective ways to improve comfort and energy performance is by applying external wall insulation (EWI). Unlike internal insulation, which reduces room sizes and can leave cold masonry behind the insulation layer, external insulation places the thermal envelope on the outside of the house. This means the existing …

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Airtightness in Old Stone Houses in Ireland: How to Improve Without Harming Your Home

by Summit MattersSummit Group, The Science of Building, Traditional Build Methods, What we do November 12, 2025Comments are Disabled

Many Irish homeowners renovating old stone-built houses want to make them warmer and more energy-efficient — but airtightness can be a confusing topic. Traditional stone walls built with lime mortar behave very differently from modern block or timber-frame construction, so they need a more sensitive approach. At Summit Matters Ltd, we specialise in renovating older …

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Why We Prefer Woodfiber Insulation (Not Just for Sustainability)

by Summit MattersSustainability, The Science of Building, What we do August 26, 2025Comments are Disabled

When comparing insulation options, PIR (polyisocyanurate) often looks cheaper upfront. But when we step back and look at the whole picture over a building’s lifetime, woodfiber consistently comes out ahead. Here’s why. 1. True Cost Over Time PIR boards are thin and affordable per square metre, but the story doesn’t end with the purchase price. …

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