Henri deMarne

Henri deMarne's Posts

Case Study: Roof Ventilation Retrofit

If you’ve ever considered skimping on ventilation details, think again. This moisture-damaged roof system is an extreme case, but it teaches an important lesson about doing the job right the first time. Read more

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Wood Shakes & Shingles

They’re pretty to look at, but they may not last as long as expected unless installed properly and maintained. Read more

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Defeating Ice Dams

They tear up roofs and stain ceilings across the snow belt. But ice dams should stay away if you follow these guidelines. Read more

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Bathroom Venting that Works

In cold climates, a badly installed bathroom fan can be worse than none at all. Here’s how to do it right. Read more

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JLC Field Guide
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