Over time, a Colorbond® steel roof can become dirty from outdoor elements like rain, dust, leaves, and pollen. While gentle washing methods are usually effective for removal, some homeowners wonder if pressure cleaning is also suitable, given its powerful spray. Pressure washing provides a thorough, deep clean but requires taking the right precautions with Colorbond’s durable surface.
In this blog post, we’ll explore the dos and don’ts of pressure washing a Colorbond® roof. We’ll cover factors like recommended pressure levels, spray patterns, and distances to rinse dirt safely while avoiding potential damage. Proper technique starting from the bottom up is important. Guidelines from roofing experts will also be shared around inspection times and maintenance.
Understanding the pressure cleaning requirements for Colorbond® is key, whether for a DIY or professional cleaning job. By following the safety tips and instructions outlined here, you can efficiently remove build-up and restore a like-new appearance to your roof’s protective exterior finish. Let’s get started!
Is Pressure Washing Safe for Colorbonds?
Pressure washing can be a suitable method for correctly cleaning Colorbond® roofs. Colorbond® is manufactured with durable acrylic paint finishes that withstand light to moderate water pressures, making a pressure washer effective for removing tough dirt and stains.
However, avoiding overspraying high-pressure direct streams is essential, as this risks damaging the roof surface over time through paint erosion or unnecessary wear. As long as the manufacturer’s guidelines are followed regarding water pressure levels, spray patterns, and spray distance, pressure washing should not affect the roof’s integrity or void its warranty. Following proper safety procedures is key to a clean Colorbond® roof that lasts.
Tools and Equipment for Pressure Cleaning a Roof
The right pressure washer, wand, and tips are essential for safely cleaning a Colorbond® roof. In most cases, a lighter-duty electric washer with around 1500-2000 PSI is suitable. Equip it with a minimum 15-degree spray wand for better control.
Fan spray tips that gently atomise the water into a wide pattern are recommended over concentrated jet streams. Adjust the pressure accordingly based on the roof’s conditions.
Other handy gear includes a telescoping pole to reach different areas easily, a bucket to mix roof cleaning solution and fall protection if working at heights.
Proper attire, such as boots and eye protection, should also be worn. The correct setup allows for effective dirt removal without damaging the roofing surface.
Safety Tips for Pressure Cleaning a Roof
Safety should always be the top priority when pressure cleaning a roof. Wear sturdy shoes with good traction and use fall protection harnesses with anchor points if working above 6 feet.
Clean one small section at a time, and avoid walking on the wet surface. Start cleaning from the bottom up to safely allow dirty water to run off.
Adjust the pressure washer to less than 2100 PSI and keep the spray wand at least a foot away from the roof. Use broad side-to-side motions with the wand, and don’t linger in one spot.
It’s also best to work with a partner if assistance is needed. Following these precautions helps ensure the job gets done efficiently while preventing slips, falls and potential damage to the roofing material.
Proper Pressure Cleaning Technique
It is important to use the right technique when pressure cleaning a Colorbond® roof. First, work from the bottom eave areas upwards in 5 x 5 foot sections.
Sweep each cleaned section with a squeegee mop to avoid streaking as you go. Approach the roof surface using long, slow side-to-side motions with the spray wand held at a slight downward angle.
Move the wand in an overlapping pattern to ensure full coverage without saturating one area. Once the whole roof has been sprayed, let it sit for 5-10 minutes before rinsing.
Finally, rinse from the top down using the same overlapping motions. Following these steps will allow for a thorough cleaning while preventing damage to the roof coating.
Special Considerations for Valleys and Ridges
Valley areas and ridge caps require extra care when pressure cleaning. Valleys, in particular, are prone to dirt, leaves and debris build-up. Use additional pressure and overlapping passes focused on these spots to remove ingrained stains.
Lightly scrub stubborn areas with a soft brush as needed before rinsing. For ridges, hold the spray wand at a 10-15 degree downward angle and move slowly along the length of each ridge.
Take care not to saturate the coating strip since water can pool more readily there. Ensure that no dirt or residue remains after rinsing these trouble areas.
While valleys and ridges clean similarly, their detailed structure demands patience and thorough cleaning techniques to restore your roof’s appearance fully.
Inspecting and Maintaining Your Colorbond® Roof
Once your Colorbond® roof has been pressure cleaned, thoroughly inspect it. Ensure all areas have been properly rinsed so no residue or debris remains behind.
Examine the coating closely under natural light for any signs of damage from over-spraying, such as dull spots or erosion. Catching small coating issues early allows for quick touch-up repairs.
Add annual pressure cleaning to your maintenance schedule to prevent heavy build-up. Also, visually check the roof twice yearly for potential concerns like rust flakes or cracked seals around penetrations.
Catching roof wear early is key to the roof’s lifespan and your property’s protection. With regular inspections and care, your Colorbond® finish should remain in excellent condition for decades.
When to Hire a Professional
While pressure cleaning a Colorbond® roof yourself can save money with the proper precautions, some situations warrant hiring a professional. Steeply pitched or multi-angled roofs require proper equipment and fall protection that may be difficult to safely self-provide.
Large or complicated commercial roof setups also favour experienced contractors. Pro restoration is advisable if your Colorbond® roof shows signs of advanced rust, UV damage or coating failure.
Professionals also handle necessary extras like roof screening, moss removal and treatment applications. They offer proper liability and certification to guarantee their work.
For complex roofs in poor shape, those without access, or anyone uncomfortable working at heights, professional pressure cleaning delivers thorough results that are well worth the investment.
So, Can You Pressure Clean a Colorbond® Roof?
The answer is yes. Pressure cleaning can be suitable for Colorbond® roofs when performed carefully and properly. Homeowners can effectively deep clean their roofing material by following the guidelines about using the right pressure washer setup, safety procedures, cleaning techniques, and inspection afterwards.
If you have additional questions or want a quote, don’t hesitate to contact the A.I Gutter & Roofing team. We offer roof inspections and repairs and can provide tips on keeping your Colorbond® roofing in the best condition.
