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  • Writer's pictureJessica Correa

Power Washing an Underground Parkade: Knightsbridge's Comprehensive Procedure to Ensure Great Result



Cleaning an underground parkade can be a challenging task, considering the confined space and the need for proper drainage. However, with our right approach and safety precautions, we can successfully accomplish a thorough power washing job. We are sharing our comprehensive procedure when we tackle an underground parkade.

Step 1: Coordinate with the Council for Cleaning Dates and Sections

Before beginning the cleaning process, we work with the council to determine the cleaning dates and sections of the parkade. This collaboration is crucial to minimize interruptions to residents, as moving all cars away is necessary for a thorough cleaning. By coordinating with the council, we schedule the cleaning process in a way that causes the least inconvenience. Step 1: Prioritize Safety Precautions Before embarking on any cleaning task, it's crucial to prioritize safety. We equip ourselves with the necessary safety gear, including gloves, goggles, and a respirator mask, to protect against chemicals and debris. Ensure that the parkade is well-ventilated to prevent the accumulation of fumes emitted by the power washer.

Step 2: Clear the Area

We create a clear working space by removing any vehicles or objects from the parkade. This will provide us with ample room to maneuver during the power washing process. Also, we take the time to check for loose debris or large objects that could hinder the cleaning process and remove them accordingly.

Step 3: Prepare the Power Washer

We consult the manufacturer's instructions or seek professional advice to determine the most suitable cleaning solution for the parkade surface. We fill the power washer with the appropriate detergent, ensuring a proper dilution ratio. We make sure to connect all necessary hoses and attachments securely, avoiding any leaks.

Step 4: Pre-Treat Stains and Spots

Pre-treating stains, such as oil spots or stubborn dirt, is an important step before power washing to ensure effective removal. By identifying the specific stains that require attention, we can choose an appropriate cleaning agent or degreaser tailored to the type of stain. It's recommended to refer to the manufacturer's instructions or seek advice from professionals to select the right product.



Then we thoroughly apply the cleaning agent or degreaser to the stained areas, using a brush or broom to scrub it into the stain. Followed with allowing the solution to penetrate for the recommended duration, which may vary depending on the product used. After the dwell time, we lightly rinse the pre-treated areas with water to remove any excess cleaning solution, preparing the surface for the power washing process.



Step 5: Start Power Washing

When power washing an underground parkade, it's crucial to prioritize the cleaning of corners, edges, and other hard-to-reach areas that tend to accumulate dirt and debris. To effectively clean these areas, we utilize a nozzle attachment or a specialized wand designed to access tight spaces.

These attachments typically feature a narrower spray pattern that concentrates the water stream, enhancing its effectiveness in hard-to-reach spots. We position the nozzle or attachment close to the surface while maintaining a safe distance to prevent any damage.

Then we direct the spray at an angle to dislodge dirt and debris from corners and edges. Additionally, we pay close attention to seams, joints, and transitions between different surfaces as they often trap dirt and require thorough cleaning. Ensuring that water and debris flow towards the drains, away from any sensitive areas or equipment present in the parkade.


Step 6: Clean Corners and Edges

We pay special attention to corners, edges, and other hard-to-reach areas where dirt and debris tend to accumulate. We utilize nozzle attachments or specialized wands designed for such purposes. We position the nozzle close to the surface while maintaining a safe distance, directing the spray at an angle to dislodge dirt effectively. We remember to guide the water flow towards the drains and away from sensitive areas or equipment.


Step 7: Rinse and Drainage

After we power wash the entire parkade, we thoroughly rinse the area to remove any residual cleaning solution or detergent. We ensure that the water flows towards the drains, avoiding sensitive areas or electrical equipment.



Step 8: Inspect and Touch Up

We carefully inspect the parkade for any missed spots, stains, or areas that require further attention. We touch up those areas as needed using a scrub brush or by repeating the power washing process. This step ensures a comprehensive cleaning result.


Step 9: Clean Up

Once we have completed the cleaning, we properly drain and store the power washer. We dispose of any debris and put away the equipment. We return any objects or vehicles to the parkade in an organized manner.


In conclusion, cleaning an underground parkade through power washing requires careful planning, adherence to safety precautions, and attention to detail. By following the step-by-step guide outlined above, we can ensure a successful and effective cleaning process. Remember to consult local regulations, guidelines, or seek professional advice to achieve the best results. A clean and well-maintained underground parkade not only enhances the aesthetic appeal but also contributes to a safer and more pleasant environment for residents and visitors.

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