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Old 09-17-2019, 04:05 PM   #1
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Dicor 501 vs Dicor 502

Good afternoon!

I need to get going on roof repairs to my new coach. I'm going with Dicor for the self-leveling sealant.

What is the main difference between Dicor 501 LSW and Dicor 502 LSW? Is one better than the other?

Cari Beth
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Old 09-17-2019, 04:32 PM   #2
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Found this on Amazon..."Ran across this from Dicor: The 501LSW was developed to be used at the consumer level. The 502LSW was developed to be used in a pumping system at the manufacturing level. Very little difference with the exception of case quantity.
Any or all of Dicor’s lap sealants will work for your application depending on whether you need a self leveling or non-leveling lap sealant.
Kathy/Dicor"
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Old 09-17-2019, 05:05 PM   #3
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Here is a link to their web page to learn the differences
https://dicorproducts.com/product/ep...manufacturers/
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Old 09-19-2019, 09:36 AM   #4
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I called Dicor once with that same question. They told me that the 502LSW was a product made specifically for dealers and OEM's and was just a little better than the 501LSW.
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Old 09-19-2019, 11:15 AM   #5
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Originally Posted by MSHappyCampers View Post
I called Dicor once with that same question. They told me that the 502LSW was a product made specifically for dealers and OEM's and was just a little better than the 501LSW.
Thank you MS,
Thats interesting because the 502 is slightly less expensive than the 501 on Amazon.
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Old 09-19-2019, 12:01 PM   #6
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I would say forget that junk and take a look at M1 adhesive sealant. A lot of current manufactures use this or similiar product rather than the self leveling sealant.
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Old 09-20-2019, 10:49 AM   #7
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I would say forget that junk and take a look at M1 adhesive sealant. A lot of current manufactures use this or similiar product rather than the self leveling sealant.
Have you checked it for any petroleum products?
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Old 09-20-2019, 10:00 PM   #8
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Quote:
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Have you checked it for any petroleum products?

Joe, the SDS only lists hazardous ingredients, the rest are proprietary.

I would not use it over Dicor because the SDS states "it becomes a firm synthetic rubber when cured." This means it will not expand/contract with the roof covering like Dicor. Then there is the price per caulking gun tube = https://www.amazon.com/Chemlink-M-1-.../dp/B0045RRSWC that puts it out of range for most of us. (do I feel a tug on my leg?)

As to petroleum by-products, even Dicor contains a small percentage of petroleum by-products, as explained on the Dicor FAQ page.
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Old 09-22-2019, 08:09 AM   #9
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(According to the MSDS/ SDS), the 502 has a slightly higher % of solvents (33.6% vs 32.5%), so (assume, if all else the same) that the 502 would flow more easily/ faster?
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Old 09-22-2019, 09:30 AM   #10
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(According to the MSDS/ SDS), the 502 has a slightly higher % of solvents (33.6% vs 32.5%), so (assume, if all else the same) that the 502 would flow more easily/ faster?
That's what Dicor told me when I called them.
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Old 09-24-2019, 04:57 PM   #11
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Good information, just ordered some of the 501 product.
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Old 09-24-2019, 07:19 PM   #12
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I have seen some non dicor stuff on my roof looks like at was thick but maybe poured on. I don't know what it is but it looks better than any other sealant up there. I have seen similar product on aluminium totes we put one part of solid rocket propellant in only its blue in color. Government contractor chose to use it over problematic areas that sometimes form cracks on the top of the totes.
I have a fiberglass roof maybe it's not suitable for rubber roof
Wish I knew what it was.
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Old 09-25-2019, 01:48 PM   #13
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Have you checked it for any petroleum products?
Used for years in rubber and fiberglass roofs it actually is very commonly used in commercial roofing
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