Montana Log Home Spring Checklist - What to Inspect Before May

Start Outside: The Exterior Walk- Around

1. The Water Bead Test (Start Here)

2. Check Stain Color and Surface Condition

Walk each side of the home and look at the log surface closely:

• Gray or black streaking - UV damage. South and west walls show this first.
• White or light-colored patches - often a sign the stain has been bleached out or that it was applied too thin originally.
• Peeling, flaking, or lifting - stain has lost adhesion. Usually means the surface wasn't properly prepared before it was applied.
• Inconsistent color across the wall - often indicates partial failure or moisture-related staining underneath.

3. Press-Test the Lower Logs

Put your thumb on each lower log especially near the foundation, below windows, and anywhere that looks discolored. Press firmly. Healthy logs are hard. If the wood gives, feels spongy, or crumbles, there's rot. Don't skip this step. Lower logs are the most moisture- exposed part of the structure and are where rot starts.

Don't skip the back of the house.

Homeowners almost always check the front. The back is where I find the most surprises - soft logs near a back porch, failing chinking along a wall that's rarely visible, mold growing on a north-facing wall that never dries out.

4. Inspect All Chinking Joints

Walk the perimeter and look at every chinking joint between logs:

• Cracks running along the centerline of a joint - classic freeze-thaw failure
• Chinking pulling away from the log face on one or both sides - adhesion failure
• Hard, inflexible sections - chinking that's dried out and lost its flex will crack through the next freeze-thaw cycle
• Missing sections gaps where chinking has fallen out entirely



Any of these let cold air and moisture in directly. Catch them in spring before another summer of water infiltration makes the problem worse

5. Check Window and Door Caulking

Look at the caulking where log walls meet window frames, door frames, and any utility penetrations (electrical, plumbing). Gaps or cracks here are a direct moisture path into the wall system. This is one of the most overlooked areas on log homes and one of the most common places I find moisture damage hiding behind the surface.

6. Inspect Log Ends and Eave Areas

Log ends - anywhere a log terminates at a wall corner or extends past the wall line -

absorb moisture ten times faster than side grain. Check them for:

• Deep checking (longitudinal cracks) that have opened up through the winter
• End grain that's soft or discolored
• Missing or cracked end-grain sealant

Also look up at roof overhangs. Ice dams and inadequate overhangs can direct water runoff directly down log walls - look for staining or discoloration patterns that indicate this is happening.

Inside: Quick Interior Checks

Inside: Quick Interior Checks

7. Look for Moisture Staining on Interior Walls

Go through your home and look for any dark staining, discoloration, or soft sections on interior log walls or around window frames. Interior moisture problems almost always originate from exterior failures - so interior signs tell you something outside is letting water in.

8. Check Interior Chinking Near Windows

Interior chinking around window frames and door frames - especially in rooms that get cold - is commonly damaged by condensation and temperature cycling. Look for cracking or pulling-away at these interior joints.

Interior chinking around window frames and door frames - especially in rooms that get cold - is commonly damaged by condensation and temperature cycling. Look for cracking or pulling-away at these interior joints.

When to call a professional vs. handle it yourself.

The checks above are things you can do yourself. What they tell you is whether you need professional attention. If you find soft logs, significant chinking failure, or stain that's clearly failing on multiple walls - don't wait. Moisture damage progresses faster than most homeowners realize, and the cost difference between early intervention and late intervention is significant.

Your Spring Checklist (Printable)

Scheduling: Why Spring Moves Fast

If your spring inspection reveals work that needs to be done - or if you find anything you're not sure about - call Megan F. early. May through August is our busiest window, and the schedule fills up in February and March for the best spring slots. Homeowners who did a winter evaluation and planned ahead get first access.

For urgent situations - significant soft logs, large chinking failures before summer rain season-call immediately and Don Williams will assess whether it can wait for a scheduled slot or needs faster attention.

Found something on your spring walk-around?

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