If it was my motorhome those seams would be caulked. Geocel is what I use and recommended by my FR dealer.
You can apply Geocel over areas it was previously applied to but I always remove it. It usually comes off in fairly long pieces once you get hold of an end or edge. Then clean and let dry for best results.
Applying it sparingly is best and stop squeezing the trigger a couple inches before you stop running the gun. Spend an extra few dollars on a rotating barrel gun with the pressure release feature. When it comes to the amount of caulk you apply more is not always better unless you've got a problem. Only applying under a foot before smoothing lightly, I repeat lightly, with a finger dipped in a heavy concentration of Dawn dish detergent and water. Do not push to caulk into the seam,, just smooth it lightly. Wipe your finger dry and repeat this process, connecting your next bead to where you stopped. End to end beads can be done neatly where the older bead tapers down, then the adjoining bead can overlap it slightly.
Your second picture showed a bead that looked too heavy and wide. All thats needed is to fill the seam.
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2006 Sunseeker 2860DS Ford V10 5 speed with Tow/Haul
Winegard T4 In Motion Satellite Dish
Furion Rear Camera, RecPro 70" Recliners
Mohawk Luxury Vinyl Plank Flooring
2013 AWD Acadia Denali, Blue Ox Equipped
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