Strip lighting 3528 type 120leds/m....heat issues?

[Wok]

Hi,

I have been researching these 12Vstrips & noticed there are now available the double density type of 3528 leds [=4 times heat? c.f 60 leds/m].

Has anyone used the double density,waterproof IP67/IP68 type? I expect the silicon waterproofing would make matters worse for thermal management.

TIA eng hoe