Practical guides to ice dams, drafts, insulation, ADUs and high-performance construction, written for New Hampshire's climate.
In New Hampshire’s cold climate, continuous exterior insulation is essential. Without it, you will end up with thermal bridging through the studs, condensation, and in the long term, mold.
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This article outlines the ultimate wall assembly for New Hampshire's cold climate!
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An honest look at standard vs. high-performance construction in New Hampshire: how each house behaves, what it costs to build, and 20 years of ownership.
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Air leaks cause ice dams, drafts and hidden moisture in NH homes. Learn how the stack effect works, what NH code allows, and the right order to air seal.
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Ice dams form when house heat warms the roof deck. Learn why heat cables and roof rakes fall short in NH, and how air sealing and insulation prevent ice dams.
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Replacing siding in New Hampshire? How much exterior insulation an existing 2x4 or 2x6 wall needs, what the code requires, and how to avoid trapping moisture.
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NH allows one ADU by right, and a new garage with an apartment above is one way to build it. See our 617 sf Cardigan 672 plan and what it costs, standard or high-performance.
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NH towns must allow ADUs in existing garages, even nonconforming ones. See our 576 sf Monadnock garage-conversion plan and what it costs, standard or high-performance.
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Frost on attic nails or roof sheathing in a NH winter usually means warm, moist house air is leaking into the attic. Learn what's normal and how to fix it.
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A drafty house or cold upstairs in a NH winter usually comes from air leaks, knee walls, rooms over garages or cold windows. Learn how to find the cause.
Read articleStart the conversation with Atlas High Performance Homes LLC. Tell us about your remodeling plans, building science concerns, or custom home goals, and we’ll help you decide the right next step.
