How To Pressure Wash Hardie Siding

Never start off on the highest pressure setting.

How to pressure wash hardie siding.

Step 2 scrub the hardboard siding. Rinse the siding with a low pressure garden hose. Rub the oil or grease off the siding. This is one of the few ways that you can damage it.

Rinse out your cloth in the bucket frequently to prevent grease and oil buildup. Mix a mild dish detergent and water in a bucket until you have sudsy water. Be sure to completely rinse it free of any soap residue. You may need to repeat.

Starting low and gently working your way up is the safest bet. Remember you still want to be careful so as not to damage the fiber cement siding. If using a brush brush the siding s surface dust or dirt then rinse the area with a garden hose. Dip a soft cloth into the mixture and saturate it well.

Use a side to side motion when cleaning horizontal planks. If using a soft cloth wet the cloth then wipe the area in a side to side motion in the direction of the plank shingle or panel siding until clean. Create a gentle cleansing solution made of mild dishwashing soap and water. Do not use a high pressure hose to clean fiber cement siding.

From there rinse the area with clean water. Using the high pressure spray nozzle attempt to remove as much dirt dust and grime as possible before cleaning with soap and water. Pressure power washing. Attach the high pressure spray nozzle to your garden or water hose and rinse the hardboard siding area that you wish to clean.

If you feel that you need to use a pressure washer especially on harder to reach locations only use it at a low pressure under 1500 psi with a wide tip. Only use a pressure washer at a distance of 6 feet or more. A pressure washer can quickly ruin vinyl siding by cracking it with the high pressure stream of water so it s necessary to know which pressure level and nozzle to use.