Question 1

Can this be used to seal roof skylight on rubber roof?

Accepted Answer

I'm in the RV Collison business and we use both Geocel or 100% silicone for sealing RV Sidewall moldings and componets affixed on to the sidewall for both metal and fiberglass sided RV's. The advantage to Geocel is it can be re-applied over itself unlike silicone. Nothing adheres to silicone, not even silicone. The disadvantage is if you have to remove Geocel It's more difficult to remove and it's a little less flexible than silicone. Either choice is a good choice. NEVER use either product on any type roof material other than metal roofs. The solvents in both products can and likely will cause the roof membrane to release from the roof.

Question 2

How many windows will one tube seal? Or to put another way, how many total inches of area will it cover?

Accepted Answer

Didn't measure inches but it covers a lot. One thing you need to know about this stuff that I found out later. This is super shiny and doesn't stick to fiberglass. I ended up having to remove it from every joint on my motorhome. It peeled right off in one long strip after being on there for 2 weeks. I won't use this again anywhere near fiberglass. The other thing was that it was so shiny that it reflected like a mirror. Looked awful and stood out!

Question 3

It appears the seams on my trailer have previously been sealed with silicone.  Can I use this product over silicone?

Accepted Answer

I would try and get as much of the silicone off as I could. I used this product to seal around the edges of my rv's roof. One entire edge of the roof had been torn away. This product worked very good to reseal the roof after I patched around the edge. I  use it in other places for sealing also. I did remove the old silicone where i could. It worked well over seams where I could not get old silicone off too. Good luck using it, I think you will be satisified Charlie, but follow the instructions.

Question 4

Suitable for hairline cracks in roof of 2001 coleman fleetwood popup?  i believe it is abs not epdm roof.

Accepted Answer

If you have multiple cracks I wouldn't use it. There is a product that can be painted on the roof to repair multiple cracks.

ASIN	B001FC98X2
Brand	Geocel
Brand Name	Geocel
Color	Clear
Compatible Material	Glass
Customer Reviews	4.7 out of 5 stars 4,692 Reviews
Global Trade Identification Number	00079239281009
Included Components	Geocel GC28100 Pro Flex RV Flexible Sealant - Clear
Item Dimensions	5.1 x 5.1 x 28.9 centimeters
Item Form	Paste
Item Type Name	Geocel GC28100 Pro Flex RV Flexible Sealant - Clear
Item Weight	10 Ounces
Item dimensions L x W x H	5.1 x 5.1 x 28.9 centimeters
Item weight	10 Ounces
Manufacturer	Geocel
Material	Plastic
Material Type	Plastic
Model	GC28100
Number of Items	1
Part Number	GC28100
Style	Compact
Style Name	Compact
Surface Recommendation	Window
UPC	079239281009
Unit Count	10 Grams
Water Resistance Level	Waterproof
Water resistance level	Waterproof

Geocel 28100V Pro Flex Crystal Clear RV Flexible Sealant - 10 oz, Quantity 1 (GC28100)

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