Written by Five Star Roofing | Published on June 2025
A thorough professional roof inspection typically examines 10 to 15 distinct areas of your roof, from the ridge capping down to the gutters and fascia boards. Before any repair or restoration work begins, qualified roofers need a complete picture of your roof’s condition to give you accurate advice and pricing.
This guide walks you through every checkpoint a professional roofer covers during an inspection. Whether your property is in Sydney, Brisbane, Canberra, or regional NSW, understanding this process helps you ask the right questions and avoid paying for unnecessary work.
Understand What a Roof Inspection Actually Involves
Many homeowners assume a roof inspection is just a quick walk around. In reality, a proper inspection takes 45 minutes to 2 hours depending on your roof’s size, pitch, and complexity.
At Five Star Roofing, our inspections follow a structured checklist that covers every surface, joint, and drainage point. This ensures nothing is missed before we recommend a repair or full restoration.
A professional inspection is not the same as a basic quote visit. It involves close examination, documentation with photos, and a written report detailing findings and recommended actions.
- Visual inspection from ground level and roof level
- Internal inspection from the ceiling cavity or roof space where accessible
- Physical testing of tiles, sheets, and flashing for movement or failure
- Assessment of drainage systems including gutters and downpipes
- Documentation of all damage, wear, and potential problem areas
- Written report with photos and a recommended scope of work
Skipping any of these steps can lead to missed damage, incorrect repairs, and repeated call-backs. Always ask your roofer what their inspection process includes before agreeing to any work.
Inspect Roof Tiles, Sheeting, and Surface Materials
The surface material is the first line of defence for your home. Roofers check for cracked, broken, slipped, or missing tiles, as well as rusting, lifting, or corroded metal sheeting. This is the most visible part of the inspection.
In NSW and QLD, terracotta and concrete tiles are common. Both degrade differently. Terracotta can crack under heavy impact or freeze-thaw movement in ACT’s colder inland areas. Concrete tiles absorb moisture over time and eventually become porous.
For metal roofs, roofers look for rust spots, loose screws, failed sealants around penetrations, and corrosion at the laps. Colorbond and Zincalume are the most common materials across Sydney and Southeast Queensland.
| Roof Material | Common Issues Found | Typical Lifespan |
|---|---|---|
| Concrete Tiles | Moss, porosity, cracking, fading | 30 to 50 years |
| Terracotta Tiles | Cracking, slippage, ridge failure | 50 to 80 years |
| Colorbond Steel | Rust, loose screws, dented panels | 25 to 40 years |
| Corrugated Iron | Heavy rust, holes, lifting edges | 20 to 35 years |
| Asphalt Shingles | Granule loss, curling, cracking | 15 to 25 years |
Roofers also check the colour and texture uniformity. Patchy or faded areas often indicate uneven weathering or previous patch repairs that did not match the original material properly.
Examine Flashing, Valleys, and Roof Penetrations
Flashing is the thin metal sheeting installed at joints, edges, and penetrations to stop water entering. It is the most common source of roof leaks across all roof types.
Professional roofers inspect every piece of flashing carefully. This includes the flashing around chimneys, skylights, vent pipes, air conditioning units, and solar panel mounting brackets. Any lifted, cracked, or corroded flashing is a potential leak point.
Valleys are the V-shaped channels where two roof planes meet. They carry significant water volume during heavy rain events, which are frequent across coastal NSW and QLD. Blocked or damaged valleys are a leading cause of internal water damage.
- Check valley lining condition and check for cracks or holes
- Inspect for debris buildup that redirects water under tiles
- Examine all pipe and vent flashings for sealant failure
- Test chimney flashing for separation from masonry
- Inspect apron flashing at wall and roof junctions
- Look for rust staining, which indicates metal flashing deterioration
In Canberra and higher altitude areas of the ACT and Southern Highlands, flashing is also checked for movement caused by temperature extremes. Metal expands and contracts significantly between summer and winter in these regions.
Assess Gutters, Downpipes, and Roof Drainage
Gutters and downpipes are part of the roof system, not just the facade. A roofer inspects the full drainage system during every inspection because poor drainage accelerates roofing material failure.
Common issues include sagging gutters, rusted or cracked sections, blocked downpipes, and incorrectly pitched gutters that pool water instead of draining it. Overflowing gutters direct water against fascia boards and into wall cavities.
| Drainage Issue | Risk If Left Unaddressed | Urgency Level |
|---|---|---|
| Blocked downpipes | Water overflow into fascia and wall | High |
| Sagging gutters | Pooling, overflow, and structural bracket failure | Medium |
| Rusted gutter sections | Holes, leaks onto walls and foundations | Medium to High |
| Incorrectly pitched gutters | Standing water, mosquito breeding, overflow | Medium |
| Missing leaf guards | Rapid debris buildup and blockage | Low to Medium |
In Queensland, gutter inspections also consider cyclone preparedness. Gutters must be properly secured with sufficient bracket spacing to handle the uplift forces from severe tropical storms.
Check Ridge Capping, Barge Capping, and Mortar Bedding
Ridge capping runs along the peak of a tiled roof. It is held in place by a bed of mortar and sealed with a flexible pointing compound. This area is one of the most common failure points on older roofs across Sydney and Southeast Queensland.
Roofers check the ridge capping for cracked or missing mortar, loose or slipped caps, failed pointing, and any caps that are sitting unevenly. Movement in ridge capping allows water ingress and can lead to caps falling and causing injury or further damage.
Barge capping runs along the diagonal edges of a pitched roof. Like ridge capping, it relies on mortar and pointing to stay in place. Both are inspected visually and by hand, with any loose sections documented for repair.
- Mortar cracking is normal in roofs over 15 years old
- Failed pointing (the flexible sealant over mortar) is a separate issue to mortar cracking
- Loose ridge caps can become projectiles in high winds, which is particularly concerning in cyclone-rated regions of QLD
- Re-bedding and re-pointing is a common restoration service that extends roof life significantly
At Five Star Roofing, we always photograph ridge and barge capping conditions during inspections so you can see exactly what we are looking at and why we make our recommendations.
Evaluate the Roof Structure and Ceiling Space
Where safe and accessible, roofers inspect the roof space from the inside. This reveals issues that are not visible from the exterior, including timber damage, water staining, insulation problems, and structural movement.
The roof structure includes rafters, battens, purlins, and trusses. Roofers look for rot, insect damage, sagging timbers, cracked members, and any previous poorly executed repair work that may have compromised the structure.
Water staining on timber or sarking (the underlay beneath tiles) confirms active or historical leaks. Even if the leak appears to have stopped, the stain indicates a path that water has used before and may use again.
- Sagging or bowing rafters indicate long-term water damage or excessive load
- White powdery deposits on timber suggest repeated wetting and drying cycles
- Damaged sarking allows water and moisture into the ceiling space even without tile failure
- Light visible through the roof structure from inside indicates gaps or holes that need sealing
- Insulation compression or displacement near eaves is common in older NSW and ACT homes
Building standards in NSW, QLD, and ACT require roofs to meet specific structural performance criteria under AS 1684 for timber framing. If a roofer identifies structural concerns, they may recommend a separate structural inspection before proceeding with surface restoration.
Review Moss, Lichen, and Biological Growth
Moss and lichen are more than cosmetic problems. They hold moisture against roofing materials, accelerating degradation. Lichen, in particular, produces acids that etch into concrete and terracotta over time.
Roofers assess the coverage and depth of biological growth. Light moss is manageable. Heavy lichen infestations may indicate a roof that has been neglected for many years and may require soft washing treatment before restoration work can begin.
Shaded roofs in Sydney’s leafy suburbs, ACT’s Canberra suburbs with established tree cover, and parts of regional QLD near rainforest areas are particularly prone to rapid moss and lichen growth. North-facing roof sections tend to stay cleaner due to sun exposure.
The inspection report should note the percentage of surface coverage and recommend appropriate treatment. Pressure washing is not always suitable for aged or fragile tiles, and a professional roofer will recommend the right approach based on tile condition.
FAQs on Roof Inspections Before Repairs or Restoration
How often should you get a professional roof inspection?
Most roofing professionals recommend an inspection every 2 to 3 years for roofs under 20 years old, and annually for older roofs. After major storm events, an inspection is advisable regardless of the roof’s age. Properties in QLD cyclone zones may benefit from a pre-season inspection each year.
How much does a roof inspection cost in NSW or QLD?
A basic roof inspection typically costs between $150 and $350 in NSW and QLD. Some companies offer free inspections when combined with a repair or restoration quote. Always confirm what is included in the inspection, particularly whether you receive a written report with photos.
Can I do a roof inspection myself?
You can do a ground-level visual check yourself by looking for obvious missing tiles, sagging gutters, or heavy moss growth. However, a proper inspection requires getting on the roof and into the ceiling space, which carries safety risks. Professional roofers are trained and equipped to do this safely and thoroughly.
What is the difference between a roof inspection and a roof assessment for insurance?
A standard roof inspection identifies maintenance and repair needs from a roofer’s perspective. An insurance assessment specifically evaluates storm or impact damage and must meet the insurer’s documentation requirements. If you are lodging a claim, ask your insurer whether they need their own assessor or will accept a qualified roofer’s report.
Do roofers in ACT follow different standards to NSW or QLD?
All three states and territories follow the National Construction Code (NCC) and Australian Standards for roofing, so the core standards are consistent. However, ACT’s colder climate means additional consideration is given to insulation, condensation, and freeze-thaw effects. Local council requirements for heritage suburbs in Canberra may also apply to materials and colours.
What should I expect to receive after a professional roof inspection?
After an inspection, you should receive a written report outlining each area checked, any defects found, and recommended actions ranked by priority. A good report includes photos of problem areas. This document helps you compare quotes accurately and plan repair or restoration work by urgency and budget.
Wrap Up and Next Steps
A professional roof inspection covers far more than a quick look at your tiles. From flashing and valleys to ridge capping, gutters, and internal structure, each checkpoint gives your roofer the information they need to recommend the right repair or restoration scope for your property.
Knowing what roofers check also helps you ask better questions, compare quotes fairly, and prioritise the work that matters most for your home’s protection.
Five Star Roofing provides detailed roof inspections with written reports and photos for homeowners across NSW, QLD, and ACT. Call us today on +64211234567 to schedule your inspection or request a free restoration quote.
