Hes supposedly has seven yrs experience with wfp and has worked with a big wfp company.
However, the downside on the video is that hes pretending to clean it as if it was a dirty bungalow and he only makes that clear half way through the vid, before he does the trad work. You can clearly see he spends ages on the frames, ages on the glass and then for good measure rinses yet again off the glass. Even though the window footage shows that he has good flow and the windows are not hydrophobic. The discrepancy comes when its just a light wipe over the frames with a microfibre cloth before he trad cleans the window. Which we all should know who have done trad work, its not that easy and sometimes you have to mop n blade a window twice.
Therefore he should have stuck to doing the comparison as a maintenance clean because thats what the window warranted, not a hyper theoretical situation which subconsciously can be swung one way or the other.
Haha it makes me want to do a vid based on a standard house now 😂