tred0956 wrote:
Posting for a neighbor who has owned many RV's and is very good about maintenance. He recently bought a used camper. The previous owner had a new fridge installed in this really well kept unit. The re and re appears to have been done by enlarging the hole through the roof where the fridge roof vent is. Whoever did the job used 3 or 4 pieces of rubber roof to seal the hole rather than one solid piece. The pieces of roofing are overlapping and well sealed with Dicor and appear to be in good condition, but my neighbor is a bit concerned. My take is that it is a bit unorthodox, but I would treat it like any other joint on the roof-keep an eye on it and reseal with Dicor whenever cracks appear. What do you think?
I personally HATE caulking on a roof and would use Eternabond when and whereever possible. Caulking requires close periodic inspection and maintenance whereas Eternabond is very easy to inspect for integrity and is close to maintenance free for around 10 to 15 years. The single biggest drawback in Eternabond is IMO it's initial installation if caulking is already there since again IMO all previous caulking should be removed before applying the Eternabond for the best and longest lasting fix. Removing any caulking gives you the best full contact with the Eternabond microsealant to the surfaces you are actually trying to seal and not having Eternabond over lumpy and bulky caulking.
I did my entire roof including the side roof seams back in 2008 and for the last 12 years I have only had to pay attention to the very front edge on the front cap seam that is exposed to road wind. I sealed that edge with a very thin bead of caulking that has had to be maintained since it has not lasted a long as the Eternabond it's protecting.
Larry
