The secret to preventing rot in your log walls

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The secret to preventing rot in your log walls
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How to prevent your log walls from rotting


The number one pain in the “butt” (pun intended) with log homes is the continual maintenance required to stop the walls from rotting. Stains and preservatives may need to be applied every year to stop your walls from falling apart but you don’t need to worry about these problems if you build a butt and pass log home the correct way.

The main reason for “rot” in a log home built in any other style is water. Rain water to be more specific.

Take a look at almost every single log home picture, design, photo and you will see the same thing over and over again. The overhangs are cut so short they can barely be called overhangs at all.

no overhangs

A maintenance nightmare – Wetting of the logs = rot

These log homes are constructed “log on log” with logs pressing tightly against another forming “capillaries for water to run and seep into every nook and cranny and for no way for it to escape. Water that rests in these places will eventually rot the wood.

The water (which comes from the rain) falls onto the walls from the roof and also directly with the slightest wind blowing. There is no escaping it, your log walls are going to get wet every single time it rains. Wet walls equals rot!

How to prevent rot – Healthy Overhangs

A properly built butt and pass log home will have very healthy overhangs that will not allow any rain water to fall from the roof onto the walls and any “horizontal” rain will not hit the walls but rather the bottom of the over hangs.

Tip: The higher you build your log home the larger your over hangs need to be and this will increase design complexity. Keep your log home to two floors and you should be able to keep your walls nice and dry.

Tip: Overhangs should be at least 3 feet on the sides and 8 feet on the ends.

healthy overhangs butt and pass log home

Large overhangs prevent wetting of the walls = no rot

Healthy overhangs = No rain hitting the walls, so no chance of rot.

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