We got a pressure washer a few days ago. I don’t like using herbicides on the patio (well, I don’t like using them in general), but keeping the brick free of weeds is an inundating task. We’ve got some vinyl that needs to be cleaned anyway, and found a really good deal on a 2000 psi Ryobi pressure washer.
Tested it out to see if it works well and to see how clean ‘stuff’ gets with just water. Wow! I don’t know if the patio bricks have ever been cleaned. I thought they were a darker colour, but it turns out they were just REALLY grubby. It’s a messy and time consuming process – I’m planning to wear my safety glasses when I finish it up because even low velocity sand in the eyeball … not fun. But it’s a lot of fun too (tiring and ironically dehydrating, but fun). Especially when Anya wants to play in the ricocheting water like it is a sprinkler.
Here’s the difference between clean and uncleaned brick — weeds get blasted right out, dirt is cleared off the stones and from between the bricks (certainly need to get sand, between the bricks is washed clean), and nothing was used but water. We were worried about damaging the stones, but 2000 psi didn’t break anything. There was lot of mud piling up as I moved across the patio. I ended up taking a snow shovel and moving the mud off of the patio – otherwise I’d get to a point where the splash-back was making the already cleaned bits filthy again.
Once the patio is cleaned, I want to try it out on the siding and railing vinyl. Hopefully we can clean off the green stuff without detergent too.