RV Rubber Roof Sealant

RV Rubber Roof Sealant

RVoyagers Have a NEW Roof. Yeah!

This was a project that did not go as fast as expected or I would have liked! Make sure you have at least two days (took me three) to complete this FUN task and also be sure that you have at least 3 days of sunshine when the last coat goes on! Making sure that your roof sealant drys properly is the last and final touch to ensuring your RVs water proof!

Typically when searching for some roof sealants for your RV, you will be directed to high-end products, which are typically only found at RV Stores or Camping world. The sealant alone will cost you $100, not to mention the tools you need to complete the job and most sealants sold at these locations are a two step process which will cost you even more. Your cost could be upwards of $200 if you go this route. If you are looking to save some money, which is why this is a DIY Project, then you will want to go the route I took. I went to home depot and found a rubber roof sealant that works for all kinds of materials, including metal roofs and provides a great warranty! It cost $65 for a 5 Gallon bucket and it estimates you will need 1 gallon for 100 square feet. Our RV is 8 x 24 and I had enough for two thick coats, the layer of repair fabric I laid, a layer for all the vents and components on the roof and a smidgen left over. Roof Coating If you were dealing with leaks already, it would be smart to spend the $5 to get a roll of roof repair fabric. Repair Fabric I used this around all of the openings on the roof, to ensure no leaks would occur because these are the most vulnerable spots. As for rollers and brushes, you can buy a simple set at home depot for $12, or $5 at Big Lots.

All you need is a brush, a pan, a big roller, a good scraper, blue masking tape, and it would make life easier if you had a broom that unscrewed so you can stand while applying the main coats! I broke mine while cleaning the roof off and had to do it on my knees and bent over, yes my back felt the pain! Depending on the current condition of your roof, will dictate the time-line of your project. If it needs a lot of prep work then you will be in the 3 day range, if not then you could complete it in one or two days. Another major factor is the sun, how much sun are you getting through out the day, because this must be completed in warm conditions. DONT be shy when applying the sealant, apply it nice and thick all the time!

RV Rubber Roof Sealant
  • Prepare the roof by scraping off most of the old pealing sealant, or remove it all completely by using a chemical remover.
  • Tighten all bolts, nuts and fasteners that will be covered by the sealant.
  • Clean the surface as much as possible, removing all mold or dirt to ensure you have a clean surface for the new sealant to really grab onto.
  • Tape Everything off, everything you dont want the sealant to get on, especially hinges and the entire perimeter of the roof!
  • Apply a layer of sealant around all openings and objects on or attached to the roof. With each object, after the first layer apply the roof repair fabric and immediately apply a second layer on top of it before anything has a chance to settle.
  • By the time you are finished with the last step, if the first parts you applied roof repair to are dry, you can start your first coat. If not, you must wait until it is not tacky to apply your first coat. Allow your first layer to dry  most of the way, a good 12 hour period, overnight.
  • Lightly clean your roof off of any dust or debris from the night before.
  • Using your brush apply another layer around all of the objects/openings on your roof.
  • Apply your second coat and make sure it is nice and thick!

This roof sealant is a bit tricky, if you start to roll to much you will just be pushing it around, leaving some parts with a vary thin layer. Its not like paint, roll it on and leave it. Each coat should all be rolled on in one direction, and your two main coats should be rolled on in opposite directions to each other. This ensures you cover all wholes, cracks, crevices and ensures a strong bonding of the layers.


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