2020 Outlook 22c roof sealant question

[Bobpco]

Brand new 2020 Outlook 22c purchased 5 months ago. Wondering what type of black sealant is used on the roof to seal skylights, etc? See attached photos. Also, I noticed “masking tape” at various spots on the roof after taking delivery. Anyone know why either the manufacturer or dealer would use masking tape on a motor home’s roof seals? To identify something, or hold on the roof? Just kidding but seriously wondering why it is there. Thanks for the input.

https://drive.google.com/file/d/1b8B...ew?usp=sharing

https://drive.google.com/file/d/186y...ew?usp=sharing

https://drive.google.com/file/d/12JZ...ew?usp=sharing

[creativepart]

Instead of guessing why not look at the Sealant guide for your model and year in the winnebago.com Owner's Tools section.

http://www.winnebagoind.com/diagram/.../000126495.pdf

I just looked it up for you and it's 311 Self-Leveling Silicone and the roof edges.

https://winnebagoparts.com/self-leveling-silicone-pair/

It looks like they use black on the roof edges and white on the shower skylight according to the callout sheet.

[Bobpco]

Thanks for the assist. Much appreciate the direction.