This same product was $8 last time I purchased. Why has it not quite tripled in price?!

Because staff wants to capitalize off needy people and make as much money as possible.

Will this adhere to it self ?

Yes it will pretty well.. I used a tube on my rv skylight then later discovered that I needed to thicken it in a few areas. Thoroughly clean the surface then apply. Solved the issue last winter. Haven’t been up there for a look how it made it through the summer though.

What product is recommended for adhering solar panel mounts to the roof of a tent trailer?

Sikaflex 221 is a really strong adhesive sealant... It can take up to a week for the Sikaflex to fully cure in colder temperatures. In temps above 70 degrees F. it takes about 5 days to fully cure. Once cured it is extremely durable and wont shrink and crack like traditional sealants, when exposed to the outside environment. However, I would never rely on just a sealent/adhesive to secure such an expensive item like a solar panel. Let alone the issue of the panels acting like a large sail on the roof of an RV and can cause some serious lift. SO If you don't want to drill in to the roof and put holes in the RV then I would recommend using some form of strap that can be affixed to the panels frame then hooked or bolted to existing bolt locations.

Is this safe for a an rv tpo roof (not epdm)?

I’ve used it on a Diflex II TPO roof and it adheres better then the dicor that was on the roof previously.

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017-187690 Sikaflex-715

Product ID: 19276947

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Details

Brand
AP Products
Item Weight
16 ounces
Liquid Volume
300
Item Form
Product
Surface Recommendation
Roof

♻️Very low VOC formula

🌡️Extreme condition crack resistance

🛠️300 ml precision cartridge

Description

🛡️ Seal your roof with confidence — durability that outlasts the rest!

ECO CONSCIOUS SAFE - Formulated with very low VOCs, ensuring minimal environmental impact and healthier air quality.
COMPACT READY TO USE - 300 ml cartridge designed for precise application and easy handling on any roofing project.
UNIVERSAL BONDING POWER - Adheres seamlessly to a wide range of roofing substrates for versatile application.
WEATHERPROOF CONFIDENCE - Remains crack-free and waterproof even under the harshest temperature extremes.
UNMATCHED ELASTIC STRENGTH - Cross-linking chemical curing delivers superior flexibility and durability beyond traditional sealants.

AP Products 017-187690 Sikaflex-715 is a high-performance polyurethane roof sealant featuring a unique cross-linking chemical curing process that ensures exceptional elasticity and durability. Designed for professional-grade waterproofing, it bonds to multiple roofing materials, resists cracking under extreme weather, and boasts very low VOC emissions for eco-friendly use. Packaged in a convenient 300 ml cartridge, it offers reliable, long-lasting protection for EPDM and other roof types.

Specifications

Brand	AP Products
Item Weight	16 ounces
Liquid Volume	300 Milliliters
Item Form	Product
Surface Recommendation	Roof
Water Resistance Level	Waterproof
EU Spare Part Availability Duration	5 Years
Number of Items	1
Manufacturer	AP Products
UPC	711217014420 033886007214
Global Trade Identification Number	00711217014420
Unit Count	1.0 Count
Material	Polyurethane
Model	017-187690
Item Weight	1 pounds
Product Dimensions	12 x 1.2 x 1.4 inches
Item model number	017-187690
Batteries	1 Unknown batteries required.
Is Discontinued By Manufacturer	No
Manufacturer Part Number	017-187690

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