How to Read a Roof Inspection Report Before Deciding on Rejuvenation

You receive a roof inspection.

It says:

“Roof showing signs of aging.”

But what does that actually mean?

Does the roof need replacement?

Can it be repaired?

Could it still qualify for rejuvenation?

The answer depends on what the inspection found—not simply the age written at the top of the report.

IKO’s residential roof-inspection guidance recommends looking at both the exterior roofing system and interior attic/deck conditions, including shingles, flashing, penetrations, decking, ventilation, moisture, and structural warning signs.

For NanoTech, those details matter because rejuvenation is intended for:

Aging but structurally sound asphalt roofs.

Start With the Shingle Condition

Look for notes about:

• Granule loss
• Cracking
• Brittleness
• Curling
• Missing shingles
• Broken shingles
• Wind damage

Aging signs and failure signs are not always the same thing.

For example:

Minor aging

May still leave the roof suitable for preservation.

Widespread physical failure

May indicate that rejuvenation is no longer appropriate.

GoNano’s current candidacy guidance makes the same distinction: aging-but-sound roofs may qualify, while widespread leaks, severe deterioration, rotten decking, or structural sagging generally do not.

Check the Roof Decking Notes

The deck sits beneath the shingles.

This is one of the most important parts of the report.

Look for terms such as:

• Sagging
• Soft decking
• Water staining
• Swelling
• Rot
• Delamination

IKO recommends checking accessible attic decking for dark stains, sagging, swelling, and other evidence of moisture intrusion.

If the deck has serious structural deterioration, preserving the shingles above it does not solve the real problem.

Look at Flashing Separately From the Shingles

A roof report may identify a problem around:

• Chimneys
• Plumbing vents
• Skylights
• Roof-to-wall transitions

That does not automatically mean the entire shingle field has failed.

Localized flashing problems may need proper roofing repair while the larger roof remains serviceable.

This is why NanoTech avoids treating every leak or defect as proof that the whole roof needs replacement.

Check for Evidence of Active Leaks

There is a difference between:

an old stain

and

active water intrusion.

The report should ideally indicate:

• Where moisture was observed
• Whether the area was wet
• Whether the source is known
• Whether repair is required

Widespread active leakage is a major concern when considering roof rejuvenation.

Don’t Ignore the Attic

The underside of the roof can reveal problems that are difficult to see from outside.

IKO recommends checking for:

• Wet insulation
• Condensation
• Mould
• Ventilation problems
• Daylight through the roof
• Leaks around penetrations

Those findings help distinguish:

roofing-material aging

from

building-envelope or moisture problems.

What Should the Report Help You Decide?

A useful roof assessment should help place the roof into one of four categories:

Maintain

The roof is still healthy.

Repair

The main issue is localized.

Rejuvenate

The asphalt shingles are aging but remain structurally suitable.

Replace

The system has genuinely reached failure.

A Good Roof Inspection Should Give You a Diagnosis—not Just an Age.

If you have an inspection report and are unsure whether the findings actually justify replacement, NanoTech Exteriors can assess the roof condition and determine whether repair, preservation, or replacement makes sense.