I will be beginning my roof repair in March. The Hi-lo will be inside the RV garage and I will choose a warm day [or two] to do the application itself. Meanwhile, I will remove vents, AC, and gutter molding and do the preparation required before applying Kool Seal.

I am a little confused as to the preparation prior to applying the Kool Seal itself. When Garyk contacted the factory rep, his instructions were as follows:

1.clean the roof
2.prime with a rust inhibiting primer
3.apply patching materials [and reinforcing grid [?]]
4.apply Patching Cement over all cracks, seams, holes and around any
protrusions (any place where two unlike surfaces meet).
5.while this is still wet, lay down another layer of Reinforcing Grid, followed by another coating of the Patching Cement (creating a sandwich of product)
6.apply [2] coats of Kool Seal

My confusion lies in an earlier post where it was recommended that eternabond web seal tape be used. Am I to understand I have options here? If I use eterna-bond web seal tape does that replace steps 3, 4, & 5 above? Or is eternabond web seal tape to be applied after doing all the above steps?

If I have the option of doing one or the other, or if all the above is required, I would like suggestions for the patching materials [patching cement and reinforcing grid]. Am I also understanding it correctly that if the webseal tape is used, nothing other than a clean surface is necessary before application?

Sorry for all these confusing questions but I want to do it right the first time.
Thanks for your advice and input.

Jerry Curtis
2406 T 2000 F250 7.3L 4x4

jcurtis95

The drift I get from this is Kool Seal wants you to use their patching materials and not eternabond. They don't make any money from eternabond. I'm going to use whichever is cheaper ( 16 year old camper ) either eternabond tape or patching cement and reinforcing grid which I presume is nothing more than a nylon screen sandwich.

Cheers and Good Luck
garyk52

Oh yea the primer thing is just on rust spots

Here's what i did to my 2001 19' last summer.

1. 1. wash roof with tsp, rinse

Here's what i did to my 2001 19' last summer.
1. wash roof with tsp, rinse 2. cover all seams, top of end caps and visable pinholes with etrnabond web seal tape 3. paint roof with 2-3 coats of elastromeric covering. I purchased the covering at Home Depot. It looks good but I've noticed a few bubbles under the coating. I don't known if the electroylis is causing this or trapped mositure before coating. I plan on cutting the blisters out next spring and recoating the area.

I know this is a hilo forum but i use to own an apache popup camper , no canvas but it has abs pannels in place of canvas, the suggested for cracks to use MSK, which is liquid used in automotive body shops, comes in quart size and i found mine at Menards, What they suggested was to first put some MEK into a metal or glass jar with some small chips of abs plastic, ( you can purchase it, ) or find a piece of abs plastic, cut it into small chuncks, like 1/4 inch, put it in overnight into containter with MEK, and lid on tight, look at it the next morning and what you have is a brushable goo. On the crack area lightly sand the crack area, brush alittle mek on and then put a cut to length piece of sheetrock joint fibermesh over the crack for strength, brush another layer over the top and then leave alone, may require several coates, but hardens in hours and is as good as the original abs plastic, I have used this on my hilo battery box and electric cord box from damage from hitting stuff from previous owners . Fiberglass on abs plastic works but will eventually let loose and have seen the results.