Hey Jamie and Cris,
I am not a wfp expert but I play one on tv. I did my 1st 4 residential wfp jobs this week. I think what Karlos is talking about is the frames around the glass. Two of the houses I did this week had modern viny coated window frames, no problems. Two others had painted wood frames, problem. There is actually quite a few posts about this issue on this board.
The paint on both these houses was in very good shape, but I still had issues. Basically, even if I scrubbed and rinsed the heck out of the top of the frame, paint residue would drip onto the glass and leave spots when it dried. I call it “weeping”, I don’t know what everyone else calls it.
So the trick, and one part of the wfp learning curve, is figuring out how to prevent it. From what I learned from this board, I just had to prevent drips from the top of the frame onto the glass. On the windows where it wasn’t too much trouble to reach, I would go ahead and scrub everything, rinse the top of the glass and the frame, and then I dried the top edge of the frame with my scrim. Then I continued to rinse the rest as usual.
Of course, the real trick is doing windows you can’t reach. I ordered a 12" hogshair brush w/ fanjets, my pole came with a dual trim with pencil jets. From what I learned here, it is helpful to have both kinds. The pencil jets give me much more control over where the water goes. What I ended up mostly doing was this. With the pencil jet brush head, I would go ahead and scrub and rinse as usual, including the top frame. Then I would move to the next window while the top frame edge of the last one dripped and dried. Then I would come back and rinse just to the top edge of the glass. If there were still drips waiting to fall, I would pinch the pole hose shut and use the brush head to remove the drips. Using the pencil jets and turning the pressure down, so the water wouldn’t splash up, was the trick for me.
The process is a little tricky, and I’m sure everyone has their own little twists. But it still better than climbing a ladder. I’m just sharing my limited but very recent experience. Now that I have one, I wouldn’t trade my wfp for anything. Its a whole new world, a world of really clean glass. Thursday and friday, I did a new house, no weeping, with 95 tdl (frenchies) windows. 80+ were ladder access, I cleaned all the outsides and 30+ insides by myself in 12 hours. I would still be there if it wasn’t for my wfp. WFP ROCKS.
Good Luck
