Roof cleaning before solar installation is worth considering if your roof has built-up dirt, mould or lichen. Before panels cover part of the surface, there is an opportunity to discuss cleaning, roof maintenance and access with the people doing the work.
The right order depends on your roof’s condition. A sound roof that needs a wash is a different starting point from one with leaks, damaged tiles or deteriorated fixings. Here is how to plan the job for your Mackay property.
Should you clean the roof before the panels go on?
If cleaning is needed, organising it before the array is installed can make practical sense. Panels and mounting equipment change the available working space, so discussing the wash early gives everyone a clearer view of the work ahead.
A new or recently cleaned roof may not need another wash. Ask your installer whether there are any preparation requirements, then discuss the roof’s condition with your cleaner. The aim is to arrange the work your property needs.
Our roof cleaning service in Mackay covers tile and Colorbond roofs, with the method and access assessed for each property.
Start with the roof’s condition
Before locking in cleaning and installation dates, tell your solar installer about any known leaks, roof repairs, loose or missing fixings, damaged tiles and previous roof painting. Ask whether a roofing professional needs to assess anything first.
The Australian Government’s solar design guidance recommends completing roof repairs or replacement before installing panels when that work is likely to be needed in the next few years.
A wash can remove suitable surface contamination, but it cannot repair a leak or confirm that the roof can support a solar installation. Where the roof is damaged or its condition is uncertain, assessment comes before cleaning.
If new fixings are also on the job list, read our guide to roof cleaning before screw replacement. Discuss the sequence with your roofer, particularly where existing screws or washers have failed.
Coordinate the bookings before confirming dates
For roof cleaning before solar installation, start the conversation while the solar job is being planned. Give your cleaner the proposed installation date and tell the installer about any planned washing, repairs or painting.
A useful booking plan has four parts:
- Have the roof’s condition and the proposed solar installation assessed.
- Agree on the order of any repairs, cleaning or coating work with the relevant contractors.
- Allow for the cleaning, rinsing and any required drying or coating cure time, following the applicable instructions.
- Confirm that the agreed preparation is complete before the solar crew arrives.
There is no single waiting period that suits every roof and treatment. Weather, repair work and coating requirements can change the schedule. Leave room to move a booking rather than assuming a roof clean and solar installation can always happen on consecutive days.
Match the cleaning method to the roof
Tell us whether your roof is Colorbond, tiled or previously repainted. If you know the coating product or have care instructions from a roofer, pass those on when requesting a quote.
BlueScope’s COLORBOND steel care guidance distinguishes routine dirt removal from treatment of fungal growth and recommends suitable products and gentle cleaning. A previously repainted surface also needs consideration of its coating and condition.
Discuss any stained areas you are particularly concerned about. Cleaning can improve the presentation of a dirty roof, while faded coatings, corrosion and damaged materials need a different conversation.
Include access and rainwater tanks in the plan
Send a wide view of the house and any separate garage or shed from a safe position on the ground. Mention narrow gates, steep driveways, skylights and sections a previous contractor has said should not be walked on.
Our roof cleaning access guide explains why the way we reach the surface needs its own assessment. Share the proposed panel layout if you already have it, especially if only part of the roof is being cleaned.
If the roof feeds a rainwater tank, flag that at the quoting stage. Agree how cleaning washwater will be kept out of the tank and what must happen before reconnection. Our rainwater tank and roof cleaning guide covers those questions in more detail.
What if solar panels are already installed?
An existing solar array does not automatically rule out roof cleaning. It does affect access and the areas that can be reached. Our Blacks Beach roof-cleaning project shows a property with panels already fitted. The scope for another roof needs its own assessment.
Ask whether the quote includes the roof, the panels, or both. Pristine Washing’s solar panel cleaning service uses purified water and soft brushes. It is a separate cleaning task from treating the roof surface.
For an existing system, the Queensland Electrical Safety Office advises checking for damage before cleaning and having damaged components repaired or replaced by a licensed electrician first.
Questions about roof cleaning before solar installation
Does every roof need cleaning before solar installation?
No. The need depends on the surface condition and the work being planned. Ask your installer about preparation requirements and discuss visible build-up when requesting a cleaning quote.
Should I clean only the area where the panels will go?
Ask for the scope to be clear. You may want the whole roof cleaned for a consistent appearance, or a quote for particular sections. Access, adjoining surfaces and the proposed panel layout will affect what is practical.
Can roof cleaning be combined with roof repairs?
The bookings can be coordinated, but cleaning and repairs are separate tasks. Your roofer should advise which defects need attention before washing and what further work is required before the panels are fitted.
Planning solar for your Mackay home?
When you contact Pristine Washing, tell us your suburb, roof material, number of storeys and proposed solar installation date. Include any known roof problems, rainwater tanks and other work already booked.
We can discuss the cleaning scope and timing with those details in mind. Call Rob on 0402 741 670 or request a free roof-cleaning quote.