1 vs 2 Coats of Collinite 845?

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herder

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New to this. Gonna wax a new car for the first time.

Is there a benefit of 2 coats vs 1? Especially for the upcoming winter?

Also how long will it really provide protection for? Trying to decide when to apply it.. January and February sometimes get bad in Toronto. Lots of salt.

Thanks
 
First coat, let cure 12-24hrs, apply 2nd coat.

Warm 845 bottle up in hot water for +5 minutes, then shake it to a liquid state. Then apply with damp applicator. Thin coats...
shake bottle occasionally to keep it in a liquid state.
 
I had the same question and did lots of reading here about it. Many say one coat is all you need. I like this advice, but will probably put on a second coat, because I'm a little ocd and I like to wax my car.
 
I like the idea of 2 coats applied super thin, imo its fine to go 6 months minimum between waxing. Although I do apply a spray wax when drying to every other wash.
 
I've gone through many nasty, salty winters on a single coat.

The only time I'd apply a second coat would be if it was applied by hand in order to ensure total coverage. I apply 845 with a DA, so I'm pretty confident that coverage is good and even.
 
If you have a heated garage, add that second coat in late December.
 
I normally go with two. Ensures I get all the spots I may have missed the first time.
 
#845 is a pretty good LSP but not the very best they offer for extreme durability though, so I would apply 2 coats for sure, waiting 12 hrs in between coats. Its also a great idea to clay or clay towel before applying as well.

I applied Collinite #476 2x's going into last winter and I'm glad I did as we got our butts kicked.

I'm sure you don't wanna go out and get #476 but it might be something to consider for next year. I agree about doing the jams but I would like to add the wheels and all windows, works great!

Sent from my LGLS990 using Tapatalk
 
herder said:
Is there a benefit of 2 coats vs 1?
Especially for the upcoming winter?

Also how long will it really provide protection for?
Click to expand...
IMO:
After the initial layer...
All a bit of a guessing game really.


Bob
 
My theory on the order to apply... I'm just guessing the 845 has a higher load of distillates in it in order to make it liquid (it will haze/evaporate off). I'd apply 845 first, out of concern that the distillates in the 845 would essentially liquefy (dissolve) a portion of the 476 if it were previously applied. The same thing will happen if you reversed the order, but to a lesser degree. Make sense?

Per product weight, the 476 probably has a higher "wax" load and wouldn't be as hard on whatever was underneath it.

I don't think this is a question of the most durable product being laid down first, as with topping a sealant with a wax. I've heard that the 476/845 are similar in composition. 476 is more durable in that it has a higher percentage of wax remaining on the surface after buffing (i.e. More wax laid down per area upon application). But in this case, I'd put the one with the least capacity to dissolve on first (the 476).

Again, just a theory. But to be honest, If I was doing two coats regardless, I'd do two coats of 476. Why not use the most durable product twice?
 
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