Roofing

This is really about weighing several signals together rather than looking for one dramatic symptom, since real decking failure rarely announces itself.

Homeowners often assume moldy decking and rotted decking are the same emergency, but they’re genuinely different problems calling for different responses.

There’s effectively no fixed expiration date here at all; the actual lifespan depends almost entirely on one single variable, and it isn’t the material’s age.

Fungus doesn’t care how the water arrived, but you should, since a leaking flashing and a condensation problem call for two completely different repairs.

The real question isn’t which one is technically stronger; it’s which one you’d rather have dry out faster if your roof ever actually leaks.

This is one of the most common corner-cutting shortcuts in roofing, and it’s exactly the kind of thing a quick nail-holding test can expose immediately.

There’s a real, narrow window here, and once it closes the swelling and structural loss that follow simply don’t reverse no matter how thoroughly it dries.

The shape and size of the sag itself is the clue, since a structural problem and a moisture problem produce two genuinely different visual patterns.

The specific color and texture you’re seeing isn’t random; it directly reflects which part of the wood the responsible fungus actually consumed.

Every roof squarely depends on this one layer for two entirely separate jobs: giving shingles something to grip, and keeping the whole frame from twisting.