Compression Ignition Addict
Join Date: Feb 2009
Location: Nacogdoches, TX
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Dicor is what you need to use.
A grand to repair sounds steep to me.
At most, you're looking at 3 hrs or so to remove the front seam, clean the trim and roof/front cap off, reputty under the trim, screw the trim back down and add screws where there should've been some, and then put a new batch of dicor on the trim.
If you are just sealing, clean everything off really good with windex and a towel. Make sure it's as clean as you can get it, because Dicor needs a good surface. And NO NO NO NO water. It's amazing how water repels Dicor and vice versa. If there's water, don't even try to apply it. Get it all dry. Then seal fairly liberally anywhere you think it needs it. Do not tool it out, just let it sink down by itself. If it's on the edges of the trailer, you can do it there too, just be easy with the amount you use because it will follow gravity down. If you make a mess, something wet will help clean it up quickly. If you have a blob, get your finger wet, and move it around a little.
And as an end note, wash/treat your roof once a year, and reseal as necessary.
2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
330,000 + miles