Dicor 551LSW-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application

This is a good product. We have a lot of client's in a vacation park. Their park model trailers take a beating all winter and then get cooked in the sun all summer. This is the best sealant I've found for tpo and rubber roof that trailers have. It is easy to apply and makes a nice solid patch.

I have tried a couple of other brands of lap sealant, and the results were simply not good. I recently installed an additional solar panel on my RV. I used a cheaper brand to save a few dollars, huge mistake! So, I decided to order Dicor and used it to finish the project and cover the other brand. The Dicor flows smoothly, it adheres great and the leveling is superb. It makes the project looks so much more professional, and I trust that it will do its job to seal and protect from leaks, etc. No more trying other brands, Dicor is the only lap sealant I will use in the future.

Works excellent for rv roof. Levels nicely and creates a flexible water tight seal perfect for covering screws and going around objects like the antenna and satellite or anything else that would make using sealing tape a pain in the rear. Have used it many times and will continue to use it when needed.

Good product and at a fair price point

It's great I can buy Dicor sealant on Amazon, because they don't have it available at any local stores. I use this sealant for the roof of my travel trailer. It seals everything very well, but remains flexible, and also relatively easy to scrape-off and reapply. This sealant is "self-leveling" but it's not self-spreading. While a blob of it will settle down and flatten slightly, it will not spread out or cover anything by itself. That means you need to use a bit more of it than you'd expect. I used a whole tube for sealing solar panel brackets. I used about half a tube to seal a new Maxxair vent fan. I keep a spare tube on hand for field repairs. Keeping a partially-used tube is tricky, as it can dry out, and become useless. I found that covering it in glad wrap did NOT stop it from drying out. Lesson learned. To store it, use a screw or lag bolt that is fat enough to properly seal the spout. Problems with quality: The tube is made of cardboard, and is not as durable as the plastic tube you get with most caulking these days. With the cardboard tube, you can easily blow the seal. If you have some dried sealant in the spout, and you use too much pressure to get it flowing, it can blow past the seal, and ruin the entire tube. Done that. Also, upon delivery i found that the spout was bent to one side, and sealant came oozing out everywhere. Tube was ruined. This is because the tube was rattling around in a too-big cardboard box. Amazon was awesome as usual, and refunded me. I provided them with feedback that more careful packaging is required for this item. Overall, I highly recommend Dicor sealant. I get the white self-leveling sealant for the roof, and the non-sag sealant (tan color) for the exterior sidewalls.

I used this to seal my replacement TV and Cellular antennas to my RV roof, and it works perfectly! Don't be stingy when you lay your bead down. Make sure it's thick and wide before you press your project into it. Then cover the top of the mounting flange with this stuff before packing up your looks. We just had biblical level rains here and my ceilings are dry.

Have used this product for several years now on our Motorhomes and enclosed car trailer. Would Recommend!

Works very well for patio and driveway cracks. I covered gaps up to about 3/4 inch (filled with backer rod first) and this works great. It's held up well through one Colorado summer and winter. I would recommend this product.