Walking on the roof

I'm not 6'5" but, I am a bit over 230. I walk on the roof of our 96 Southwind with no problems.

Do you plan on power washing the two AC units while they are still on the roof, right next to the two holes?
If you are going to take them off of the roof, you will need help and something other than the rear ladder.

I don't know about your motor home, but my fifth wheels roof will easily support two big guys as long as the don't stand close together. I think that you would need more than one man to lift and remove the air conditioners. They are built light, but they are still quite a lift for one man. Perhaps park under a tree limb and use a block and tackle. Also, if you have a rubber roof be very careful as the AC units have some sharp corners that will easily cut and tear a rubber roof. I speak from experience.

Why not just replace the filter material on the interior protion of the air conditioners. I don't think RV A/Cs have a air vent function like stick house air conditioners have. The only thing cleaning the "coils" is going to accomplish is more efficent, cooler, operation. Will not help with odor.

And don't put cloth booties over your sneakers! It is a sure way to end up on the ground real quick! Far better just plain sneakers for a better grip.

2X WNY PAT suggestions.

You can buy the filter material and trim it to size. Cheap and worth a try.

I like to use two pieces of 3/8" ply about 18"x 2-3 feet.
Stand on one, move the other to next position, repeat.

paranoid, I guess, but the last thing I want to do is create more problems(work) w/damage.

I get on my roof at least two times a year. I recovered it a couple of years ago (rubber roof) and I get up there with a tube of EPDM rubber once a year just to goo any places that look like they might need it. The biggest thing on a rubber roof is wear tennis shoes and don't twist your feet when you walk up there. To turn pick your feet up. It is possible to tear, separate, or otherwise damage the roof. If you're careful it's not likely.

I'm 6'2, 235 and it's no problem. I walk very gently and stay to the sides as much as possible.

If you're checking the condition of the roof look closely around the edges where the rubber is pulled over the sides. That's where cracks will form and water can seep in under the rubber and down the sides, inside of the walls. You gotta look close to find these types of cracks sometimes as you can't necessarily stand there and see them.

Also, depending on the construction method, check the rear corners rear good. It never hurts to put a little EPDM rubber caulk down on a spot that looks questionable. Just don't use anything else on a rubber roof. Unfortunately, EPDM caulk can't be found at Lowes, Home Depot, etc.. You'll have to get that at Camper World or similar place.

Get the carbon type filter to cut down to size as that's what the dopers use to hide the mary jane smell.

I have a holiday Rambler and am your size at 235LBS hate my size,, anyway I walked on the roof and its solid Mine is a 1982 Holiday Rambler Imperial. If you see what the motorhome is framed with you could camp on the roof. It is framed with aluminum framing and is real thick roof. Lots of support.