Grab your Wash and Rinse buckets and fill them with around 9L of water each, and drop your Great Barrier Thingys in the bottom.
We are using our Auto Body Gel and Wash Pillow for this job as we prefer these for larger jobs.
All three of our washes are safe for use on caravans, but we like to use Auto Body Gel as it's a lot more forgiving if it dries or you are working in direct sunlight, and the Wash Pillow is our favourite when washing larger surface areas like a caravan, it holds a mammoth amount of suds and speeds up the washing process thanks to its massive size.
Now add the correct dosage of shampoo as on the product label, which is just one capful for all our washes. You add to the bucket when the water level is ¾ full, so you won't get a huge head of suds and very little water! Your aim is to get a nice layer of suds, about 10cm worth, so they sit just above the rim of your bucket. Be sure to rinse the washes cap clean in the wash water as well, so you can be sure to get the full dose. Agitate the wash solution with your pressure washer to create a nice head of suds, like a well-poured beer.
Setup your ladder in the section you are going to start on, you will want to try and do the upper sections first, leaving the lower dirtier sections till last. You may need to move your ladder several times for this.
Give your Wash Pillow a thorough rinse out in the rinse water bucket first to dislodge any dust or dirt that may have settled on it, and then dip it into your Wash bucket and give it a good squeeze to soak up a heap of suds.
Begin washing in straight overlapping motions starting at the top and working down, flipping the wash tool after each area (how often to flip depends on how dirty the van is, more often if it's dirtier). Once both sides have been used, take it back to your Rinse bucket and give it a good thrashing to dislodge any of the collected dirt, before dipping back into your Wash bucket and continuing until the van is done. Be careful around any sharp edges, seams, badges, bolts or screws, or any protruding objects that could catch the microfibre and potentially damage it.
Thoroughly rinse the van down with the open end of the hose, to flood the panels which makes the water sheet off in one big clump and leaves very little water left behind for you to dry. If you are using Happy Ending in the next step, you can just with the pressure washer.
If the front of the van has a build up of bugs, now is the time to deal with it. Grab your Bugger Off and Debugger cloth (dipped in your Wash Bucket), liberally spray half of the front of the van and allow it to dwell for no longer than a minute. The Bugger Off contains powerful cleaners that break down the enzymes which make bugs so difficult to remove. Don't let it dry, slowly and gently in one direction wipe over the section, flipping and turning to a fresh side of the cloth often. Repeat as necessary until all the bugs are gone. Thoroughly rinse down the area afterwards.
If you have any staining from the bugs etching into the paint, Paint Cleanse & Restore might help if the damage isn't too severe. Please note, Paint Cleanse & Restore is not suitable for matte or satin finishes.
It can be quite difficult to hand wash the roof of the van, depending on what model you have. The one we are washing here has a lot of intricate areas, solar panels, vents, and air conditioning units that prevent any kind of effective hand washing (even with an extendable wash tool pole).
Fortunately, the roof here was not too dirty so we could get away with a snow foam and rinse down.
Some car wash facilities will have a dedicated wash bay with a gantry that you can walk on and safely access most of the roof.
We do not recommend climbing on the roof of your van, some vans are not able to support the weight, and even if it can the risk of slipping on the wet and soapy surface is too great to be worth the risk.