What a roof inspection covers
A roof inspection is a documented condition assessment of the whole roof assembly — not just the shingles you can see from the street, but the components that determine whether it keeps working.
A thorough one covers six areas. The covering itself: granule coverage, flexibility, cracking, curling, missing or damaged units, and how fasteners are behaving. The penetrations: every pipe boot, vent, fan flange and flue, which is where most leaks begin. The flashings: step, counter, kick-out, valley and edge metal, and whether any of it has been sealed rather than flashed. The drainage: valleys, gutters and downspouts, and whether water actually leaves the roof the way it was meant to. The ventilation: intake and exhaust, and whether the attic can breathe. And the attic: the underside of the decking, where evidence of past and present water intrusion is written plainly for anybody who looks.
What makes it worth paying for is the record. Photographs by slope, dated, with a prioritised list of what needs attention now, what to watch, and what is fine. That record is what lets you plan rather than react, and it is what you compare against after the next storm.
The four kinds of inspection
Pre-purchase
Before you buy. The question is not "does it leak today" but "what am I inheriting" — remaining life, installation quality, number of layers, evidence of previous repairs and whether those repairs were done properly. A general home inspection almost always recommends a roofing contractor look more closely; this is that look. It is particularly worth doing on homes with complex rooflines, which is most of the older housing around Seguin.
Post-storm
After hail or damaging wind. This is a survey rather than a general assessment: test squares on each slope, impacts counted and classified as functional or cosmetic, soft metal checked, sealant strips and creasing examined. Timing matters because attribution to a specific event becomes harder the longer you wait. This overlaps directly with storm and hail damage repair.
Maintenance
The annual or biennial check. Catches the things that are cheap now and expensive later: a boot starting to crack, debris building in a valley, a lifted shingle, a fastener working loose, soffit vents blocked by insulation. This is the inspection with the best return and the one almost nobody books.
Diagnostic
When something is already wrong. Narrower and deeper than a general inspection, focused on establishing cause rather than condition, and it belongs with roof leak detection rather than here. If you have an active leak, that is the service you want.
Ask for the photographs as files, not just as pictures in a report, and keep them with the house paperwork. A dated set of images of every slope is the single most useful thing you can hold if you ever need to establish what the roof looked like before a storm. It costs nothing and almost no homeowner has it.
Eight reasons to book an inspection
- You are buying the house
The roof is among the largest replacement costs you can inherit, and the hardest to judge.
- Hail or high wind came through
Damage is often invisible from the ground and gets harder to attribute over time.
- The roof is over ten years old
In this climate that is the point where condition starts diverging sharply between houses.
- You have had a repair you are unsure about
A second opinion on whether the work was actually done correctly.
- Granules are collecting in the gutters
Worth knowing whether it is normal shedding or general failure.
- The attic is extremely hot or smells damp
A ventilation problem silently shortens the life of everything above it.
- You are planning solar or other rooftop work
Find out what is up there before fixing equipment to it for twenty years.
- You want to budget rather than be surprised
A condition-based estimate of remaining life turns a crisis into a plan.
What inspections usually find in this region
The same handful of things, over and over, and most of them are cheap to deal with early.
Degraded pipe boots. The most common finding by a distance. Rubber collars crack from constant ultraviolet exposure well before the shingles around them are finished. Catching one before it leaks is a small job; catching it after two years of leaking means decking replacement.
Sealant used instead of flashing. Usually from a previous repair. It looks fine for a few years and then stops working, and the inspection is often the only time anybody notices that a junction was caulked rather than built.
Inadequate ventilation. Exhaust without intake, soffit vents blocked by insulation, or simply not enough net free area for the attic volume. The roof cooks from underneath and ages from both sides. It is one of the few findings that, if corrected, measurably extends the life of what is already up there.
Debris in valleys and gutters. Especially under mature tree canopy, which is characteristic of the older, shaded parts of the city. Organic debris holds moisture against the roof and dams the channels that carry the heaviest flow.
Fastener backout and nail pops. Thermal cycling plus seasonal structural movement on expansive clay soils works nails up out of the decking over years. Scattered pops are routine maintenance; a slope covered in them tells you the house has been moving.
Unrecorded storm damage. Bruising and creasing from a storm the owner never connected to the roof, because nothing leaked at the time. This is routine in the north-east corridor through Schertz and it is the finding most likely to change what somebody does next.
Your own pre-check
Worth doing before you book, because it makes the visit more focused.
- Photograph each slope from the yard and note which direction it faces. South and west age fastest.
- Note the roof's age and history — install date, any repairs, any previous storm claims.
- Check the gutters for granule accumulation and for sections pulling away from the fascia.
- Spend five minutes in the attic with a flashlight looking for staining, daylight and rust at nail points.
- Note any room that smells musty or has ever shown a mark on the ceiling, even an old one.
- Find your paperwork — original invoice, warranty, any previous inspection reports.
How an inspection runs
- 01
History and purpose
Age, repairs, storms, known problems, and why you are having it done. A pre-purchase inspection and a post-storm survey look for different things.
- 02
Ground-level survey
Each elevation photographed, gutters, downspouts, fascia, soffit and mechanical equipment checked, and the roof lines sighted for dips and waves.
- 03
Roof surface
Slope by slope. Covering condition, every penetration, all flashing details, valleys, ridges, hips and edge metal, with fasteners and sealant strips checked by hand.
- 04
Attic
Underside of the decking, staining, daylight, insulation condition, moisture readings on framing, and whether intake and exhaust ventilation actually exist and are clear.
- 05
Report
Photographs organised by slope, findings with the reasoning, and a prioritised list: now, soon, watch.
- 06
Walk-through
Somebody explains what they found and shows you the images. You should finish knowing the condition of your roof and what the next twelve months look like.
What affects an inspection
| Variable | Effect on the job |
|---|---|
| Roof size and complexity | More planes, dormers, valleys and penetrations mean more to assess and document. |
| Pitch and height | Steep or two-storey roofs need fall protection, or drone imagery where walking is unsafe. |
| Attic accessibility | A decked, walkable attic is quick. Low clearance with ductwork and loose-fill insulation is slow. |
| Purpose | A post-storm survey with test squares and slope-by-slope counts is more work than a maintenance check. |
| Documentation depth | A written report with organised photography takes real time beyond the site visit. |
| Covering type | Tile and metal need different assessment knowledge and more care underfoot than asphalt shingle. |
When not to wait for an inspection
An inspection is planned work. If water is actively coming into the house, it is the wrong service — you want emergency roof leak repair now, and the condition assessment afterwards. If the roof is physically open with weather coming, the right first move is roof tarping.
There is also a soft deadline worth respecting after a storm. The longer a damaged roof sits, the harder it is to connect its condition to a specific event, and fractured shingles do not survive the next storm as well as they survived the last one. If hail came through your area, book it while it is recent rather than when the leak eventually appears — and if one already has, roof leak repair is the step that finds it. For how all of this fits together, start with start on the main San Antonio page.
Questions about roof inspections
How often should a roof be inspected?
Annually is a reasonable baseline in this climate, plus after any significant hail or wind event. The annual check matters because the damage that shortens a roof's life here is cumulative and invisible from the ground: granule loss, sealant strips releasing, fasteners backing out, boots going brittle. The post-storm check matters because attribution to a specific event gets harder as time passes.
Is a roof inspection the same as the roof section of a home inspection?
No, and the difference matters when you are buying. A general home inspector assesses the roof as one of dozens of systems, often from the ground or a ladder at the eave, and their report will typically recommend further evaluation by a roofing contractor. A roofing inspection means somebody on the roof and in the attic, assessing the assembly in detail. If the home inspection flagged the roof, that is a recommendation to get this done, not a conclusion.
What should the report actually contain?
Photographs organised by slope, the condition of the covering with the reasoning behind the assessment, the state of every penetration and flashing detail, valleys and edge metal, ventilation adequacy, attic observations including any moisture readings, and a prioritised list separating what needs attention now from what to watch. A verbal summary and a price is not an inspection report.
Can a roof be inspected without anybody walking on it?
Partly. Binoculars from the ground, a camera on a pole and a drone can all cover the surface, and drone imagery is genuinely useful on steep or fragile roofs. What none of them do is let somebody press a suspected hail bruise to feel whether the mat is fractured, lift a shingle to check whether the sealant strip has released, or inspect the attic. On a roof that is safe to walk, walking it finds more.
Will an inspection tell me how many years I have left?
It will give you a reasoned estimate based on condition, which is more useful than the number on the original packaging. Condition is what matters: granule coverage, flexibility, fastener behaviour, the state of the flashings and how well the attic is ventilated. Nobody can predict hail, and one bad spring storm can shorten the answer considerably. Treat it as a planning figure, not a guarantee.
Is an inspection worth it before buying a house?
On a house of any age, yes. A roof is one of the largest single replacement costs in a property and it is the component a buyer is least equipped to assess. The inspection either gives you confidence or gives you a documented condition to raise during negotiation. On a newer home it is still worth doing, because installation defects at the details leak regardless of how new the shingles are.
Related services and areas
An inspection usually ends by pointing at one of these.