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	B004RCP49O
Best Sellers Rank	#965 in Automotive ( See Top 100 in Automotive ) #3 in RV Sealants
Brand Name	Geocel
Color	White
Compatible Material	[Multiple]
Customer Reviews	4.7 4.7 out of 5 stars (6,771)
Global Trade Identification Number	00079239281016
Included Components	Geocel Corporation GC28101 Pro Flex Rv Flexible White
Item Dimensions	2 x 2 x 11.38 inches
Item Form	Liquid
Item Type Name	Geocel Corporation GC28101 Pro Flex Rv Flexible White
Item Weight	12.8 ounces
Manufacturer	Geocel
Material Type	Silicone
Model	28101V
Number of Items	1
Part Number	28101V
Style Name	Compact
Surface Recommendation	Wall or Ceiling
UPC	079239281016
Unit Count	10.0 Fluid Ounces
Water Resistance Level	Water Resistant

28101V Pro Flex White RV Flexible Sealant - 10 oz. (GC28101)

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