DIY My Roof: Where Do I Start With Roof Maintenance?

For many Australian homeowners, the roof is one of those parts of the house that is easy to ignore—until something goes wrong.

A blocked gutter, overflowing downpipe, cracked roof tile or damaged eave can eventually contribute to water entering the roof space or damaging other parts of the house. The good news is that regular roof maintenance can identify many problems before they become expensive repairs.

The question is: where do you start?

A roof is not just the tiles or metal sheets you can see from the ground. It is a system made up of many components that work together, including the roof covering, ridge capping, valleys, flashings, gutters, downpipes, eaves, fascia, ventilation and the structural roof frame.

For an Australian homeowner, the best approach to DIY roof maintenance is to start from the ground, work around the outside of the house, and only consider accessing the roof when it can be done safely.

Australian government guidance recommends having a regular maintenance schedule and specifically identifies tasks such as cleaning gutters, checking for leaks, replacing cracked roof tiles and checking the fall of gutters.

Start With a Roof Maintenance Walk-Around

Before climbing a ladder or getting onto the roof, walk around your house and look carefully at the roof from ground level.

This first inspection can tell you a surprising amount.

Look for:

• Missing or damaged roof tiles
• Rust or damaged areas on metal roofing
• Sagging sections of the roof
• Sagging gutters
• Overflowing or blocked downpipes
• Water staining below gutters
• Damaged fascia boards
• Rotten-looking timber around eaves
• Loose or damaged guttering
• Vegetation growing against or over the roof
• Damaged flashing
• Moss or lichen build-up
• Debris collecting in valleys or gutters
• Water stains on exterior walls

Pay particular attention after heavy rain, storms or strong winds.

YourHome recommends regular maintenance of the outside of Australian homes and specifically advises homeowners to clean gutters, check for leaks and maintain roof components such as cracked tiles and roof ridging.

Understand the Main Components of Your Roof

Before attempting DIY roof maintenance, it helps to understand what you are looking at.

A typical suburban Australian roof can include:

• Roof tiles or metal roof sheeting
• Roof battens
• Roof framing or trusses
• Ridge capping
• Hip capping
• Valleys
• Flashings
• Gutters
• Downpipes
• Fascia
• Eaves
• Eaves lining
• Roof vents
• Skylights
• Solar panels
• Roof penetrations
• Roof drainage and stormwater connections
• Not every house has all of these components.
• A tiled hip roof, for example, will have hips and ridge capping, while a simple skillion roof may have neither.
• Understanding the difference is useful because a problem with a roof covering may require a different trade from a problem with the roof structure or roof drainage.
• Start With the Gutters
• For most homeowners, gutters are one of the best places to start roof maintenance.
• Gutters collect rainwater flowing from the roof and direct it towards the downpipes.
• Leaves, bark, dirt, moss and other debris can accumulate in gutters and restrict the movement of water.
• A blocked gutter can cause water to overflow against fascia boards, eaves or walls rather than being directed into the roof drainage system.
• YourHome recommends cleaning gutters regularly and checking them for leaks and adequate fall towards the drainage outlet.
• What to Check
• From a safe position, look for:
• Leaves and other debris
• Garden growth
• Dirt or sediment
• Rust
• Cracks
• Holes
• Loose joints
• Sagging sections
• Water staining
• Separation from the fascia
• Incorrect or inadequate fall
• Don’t assume that a gutter is working correctly simply because it looks reasonably clean.
• A gutter can be clean but still have inadequate fall, damaged joints or a blocked outlet.
• Check the Downpipes
• Once the gutters have been checked, follow the system down to the downpipes.
• A downpipe carries rainwater from the gutter towards the ground-level stormwater system or another approved discharge arrangement.
• The Australian Building Codes Board’s Housing Provisions recognise downpipes as part of the roof drainage system and specify requirements concerning downpipe numbers, positioning and capacity.
• For homeowners, the important maintenance questions are simpler:
• Is water getting into the downpipe?
• Is water getting out of it?
• Check for:
• Blocked downpipe outlets
• Leaves and debris
• Crushed or damaged sections
• Loose brackets
• Leaking joints
• Rust
• Water escaping around connections
• Discharge problems at ground level
• One particularly useful check can be carried out during or immediately after rainfall. Watch the gutter and downpipe system from a safe position and see whether water is flowing freely.
• If water is overflowing from the gutter while the downpipe appears clear, the problem may involve gutter capacity, roof drainage design, excessive rainfall or another issue rather than simply a blockage.
• Check the Eaves and Fascia
• The eaves are the parts of the roof that extend beyond the external walls of the house.
• They provide important protection from weather and can also contribute to shading and passive design.
• YourHome describes correctly designed eaves as an important shading element for Australian homes, particularly on northern elevations.
• Look underneath the eaves for:
• Water staining
• Sagging eaves lining
• Cracking
• Peeling paint
• Rotting timber
• Pest damage
• Mould or persistent dampness
• Gaps or damaged sections
• Also inspect the fascia, which is the board or other component along the roof edge to which many gutters are attached.
• Water overflowing from a blocked gutter can eventually damage the fascia and eaves.
• If you find significant timber decay, don’t simply paint over it. The cause of the moisture needs to be established and the damaged material may require replacement.
• Look at the Roof Covering From the Ground
• Now move your attention upwards.
• For a tiled roof, look for:
• Cracked tiles
• Broken tiles
• Missing tiles
• Displaced tiles
• Damaged ridge capping
• Deteriorated mortar bedding or pointing
• Moss and lichen
• Debris collecting in valleys
• For a metal roof, look for:
• Rust
• Corrosion
• Damaged sheets
• Loose or damaged fasteners
• Deteriorated sealants
• Damaged flashing
• Debris
• Corrosion around roof penetrations
• Do not assume that every roof problem is visible from ground level. Roof leaks can originate some distance from where water eventually appears inside the house.
• Check the Valleys
• If your roof has valleys, give them particular attention.
• A roof valley collects water from two adjoining roof surfaces and directs it towards the gutter or another drainage point.
• Leaves and debris can accumulate in valleys, particularly where trees overhang the roof.
• A blocked valley can restrict water flow and contribute to water entering areas where it should not.
• Some valleys are readily visible from the ground. Others are difficult to inspect without accessing the roof.
• If a valley cannot be safely inspected from ground level, it is generally better to arrange a professional roof inspection than to take unnecessary risks climbing onto the roof.
• Check Ridge and Hip Capping
• On tiled roofs, ridge capping covers the junction at the top of the roof, while hip capping covers the external sloping junctions.
• Look for:
• Cracked or displaced tiles
• Loose capping
• Cracked mortar
• Deteriorated pointing
• Gaps
• Signs of water entry
• Australian homes have been constructed using different methods and materials over many decades, so the condition and construction of ridge and hip systems can vary considerably.
• A repair that looks simple from the ground can become more complicated if the underlying bedding, pointing or roof structure is damaged.
• Check Roof Penetrations
• Anything that passes through the roof creates a potential area requiring careful weatherproofing.
• Examples include:
• Skylights
• Vent pipes
• Roof vents
• Air-conditioning penetrations
• Antennas
• Solar installations
• Flues
• Other services
• Look for visible deterioration around these areas, particularly water staining inside the roof space.
• YourHome notes that skylights require regular maintenance and that leaf debris can cause staining, corrosion and subsequent roof damage.
• Don’t remove or disturb flashing simply because it looks old. Flashing is part of the roof’s weatherproofing system and incorrect alterations can create a leak rather than fix one.
• Don’t Forget the Roof Space
• If your house has a safe and accessible roof space, a visual inspection from inside can provide useful information.
• Look for:
• Water staining
• Damp timber
• Mould
• Rust
• Daylight coming through where it shouldn’t
• Damaged insulation
• Wet insulation
• Pest activity
• Signs of roof leaks
• Condensation
• A roof space can sometimes reveal a problem before it becomes obvious inside the house.
• However, do not walk on plasterboard ceilings or other areas that are not designed to support your weight.
• YourHome also notes that condensation can occur beneath roofing materials and that roof-space ventilation and drainage need to work together to prevent moisture accumulating in insulation and internal linings.
• What About Cleaning the Roof?
• Cleaning can be part of roof maintenance, but this is an area where homeowners need to be careful.
• Pressure cleaning a roof can damage some roofing materials, dislodge tiles, remove protective coatings or force water into areas where it should not go.
• The method should depend on the roofing material and its condition.
• An older roof may also contain hazardous materials.
• YourHome specifically warns that older Australian homes may contain hazardous materials such as asbestos and recommends getting expert advice rather than attempting to remove hazardous materials yourself.
• This is particularly important when dealing with older roofing products, including some historical asbestos-containing roofing materials.
• When DIY Roof Maintenance Should Stop
• There is an important difference between roof maintenance and roof repair or construction work.
• Low-risk tasks such as inspecting from ground level, clearing accessible gutters safely and checking visible components can be suitable for some homeowners.
• However, specialist assistance should be considered when the job involves:
• Working at significant height
• Walking on the roof
• Structural roof repairs
• Replacing roof framing
• Major leaks
• Damaged trusses or rafters
• Electrical equipment
• Solar panels
• Suspected asbestos
• Major flashing work
• Roof replacement
• Significant gutter or stormwater alterations
• YourHome recommends that DIY construction work generally be limited to work that is low-risk, cosmetic, non-structural and easy to rectify if something goes wrong.
• Work at height also carries significant fall risks. Safe Work Australia identifies roof access, fragile roofs, falls, electricity and falling objects among the hazards associated with roof work.
• A Simple Australian Roof Maintenance Checklist
• If you’re wondering “Where do I start with roof maintenance?”, work through this checklist:
• 1. Walk around the house
• Look for obvious damage, sagging, staining and vegetation.
• 2. Check the gutters
• Remove accessible debris and look for leaks, rust and sagging.
• 3. Check the downpipes
• Make sure water can flow freely and connections are secure.
• 4. Inspect the eaves and fascia
• Look for water damage, rot, staining and deterioration.
• 5. Look at the roof covering
• Check for broken tiles, displaced tiles, corrosion or damaged metal roofing.
• 6. Check valleys
• Look for leaf build-up and blocked drainage.
• 7. Check ridge and hip capping
• Look for movement, cracking and deterioration.
• 8. Look around roof penetrations
• Check skylights, vents, pipes and other penetrations for obvious deterioration.
• 9. Inspect the roof space if it is safely accessible
• Look for moisture, staining, mould and damaged insulation.
• 10. Record anything that needs further attention
• Take photographs from a safe position and make a list of the problems.
• How Often Should You Maintain Your Roof?
• There isn’t one maintenance interval that suits every Australian home.
• A house surrounded by trees may need gutters checked much more frequently than a house with little surrounding vegetation. Coastal locations can also expose roofing materials to more demanding conditions.
• YourHome recommends an annual home maintenance schedule and specifically recommends regular gutter cleaning and roof checks.
• A practical approach is to carry out a more thorough roof maintenance check at least annually, while also checking the roof and gutters after major storms and periods of heavy rainfall.
• If your home has large trees nearby, gutters may need attention considerably more often.
• Know Your Roof Before You Start
• The most important part of DIY roof maintenance is knowing what you are looking at and what you can safely do yourself.
• A roof is a complete system. The roof covering, battens, framing, valleys, flashings, gutters, downpipes, fascia and eaves all have different functions.
• Start from the ground. Work methodically around the house. Photograph anything that looks unusual. Keep a record of maintenance and repairs.
• And when you find something that appears structural, hazardous or beyond straightforward maintenance, don’t turn a small roof problem into a major one by attempting a repair you are not equipped to undertake.
• Good roof maintenance is largely about finding problems early.
• For an Australian homeowner, the simplest starting point is therefore:
• Roof → Gutters → Downpipes → Eaves → Fascia → Valleys → Ridge/Hips → Roof penetrations → Roof space.
• Once you understand these components, you have a much better idea of what is normal, what needs