When applying the lap cement do you smooth it out with a putty knife or just let it lay after applying with a caulking gun?
I've used self-leveling Dicor a good bit and it settles smoothly. I wouldn't attempt to smooth it.
Jim
Depends if the sealant is a self-leveling type or a non-sag type, Dicor comes in both variations.
The non-sag version needs to be troweled into its finished surface. The self-leveling type spreads more, it also can be troweled into position if it flows too far.
I like disposable, plastic drywall compound knives, they make clean up much easier.
Red Devil 4718 3-Piece Plastic Knife Set - Putty Knives - Amazon.com (https://www.amazon.com/Red-Devil-4718-3-Piece-Plastic/dp/B001SBJIA8/ref=sr_1_1?ie=UTF8&qid=1548181708&sr=8-1&keywords=Red+Devil+4718)
Remember that overcoating the old vent sealant does not help seal the hatch, the new sealants purpose is to preserve the existing sealant and to protect the hatch's plastic from sun exposure damage. The actual seal is between the bottom of the hatch and the roof, you cannot renew this seal without removing the hatch (which usually destroys it).
And buy a box of disposable glove, I go through several boxes of these a year. When sealing the roof and vents, wear two or more pairs of gloves at time, which allows exposing a fresh set of the gloves when the other pair gets too gooey. Buy a size larger than what you usually use.
X-Large Nitrile Gloves - 100 Pack, 5 Mil, Powder-Free (https://www.harborfreight.com/5-mil-Nitrile-Powder-Free-Gloves-100-Pc-X-Large-68498.html)
Larry
Agreeing with Larry, I would be extremely surprised if a roof vent were to leak due to a failed seal. Our seals were 18 years old and the grey goop used by LD looked brand new. Also the factory had used adhesive along with the sealant and parlastic so removing the vent without destroying it would take some serious luck.
Larry said, "And buy a box of disposable glove, I go through several boxes of these a year. When sealing the roof and vents, wear two or more pairs of gloves at time, which allows exposing a fresh set of the gloves when the other pair gets too gooey. Buy a size larger than what you usually use.
X-Large Nitrile Gloves - 100 Pack, 5 Mil, Powder-Free"
I use powder-free gloves, but find a tsp of cornstarch in each glove makes it easier on & off, but I still have dexterity.
Lynne
"I use powder-free gloves, but find a tsp of cornstarch in each glove makes it easier on & off"
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::) If I dusted cornstarch inside the nitrile gloves I wear when I'm messing with the rig, my sweaty hands would turn the cornstarch into a goopy paste real fast! This hasn't been an issue with you, I guess?
If I dusted cornstarch inside the nitrile gloves I wear when I'm messing with the rig, my sweaty hands would turn the cornstarch into a goopy paste real fast! This hasn't been an issue with you, I guess?
It's amazing how much hands sweat on a warm day, the insides of the gloves can fill with your own saline solution.
I keep a roll of paper towels on roof, when resealing, used to dry my hands, when shedding a dirty pair of gloves and putting on a fresh pair.
Larry