Any tips on foaming my rear hatch?

I've heard that if you foam it all at once the outer edges will cure faster leaving the foam towards the middle still wet. When the foam in the middle starts to cure it has no where to expand and can warp/deform body panels.

cover up any carpet or anything you don't want it on because it is pretty sticky and can make a mess when it gets on things you don't want it on

 
I've heard that if you foam it all at once the outer edges will cure faster leaving the foam towards the middle still wet. When the foam in the middle starts to cure it has no where to expand and can warp/deform body panels.cover up any carpet or anything you don't want it on because it is pretty sticky and can make a mess when it gets on things you don't want it on
I've heard about that, but didn't know it was from putting too much of it on at once. That's good to know then. That really helped me.

How much will 1 can do (of the dense stuff)? Like how many 2 liter bottles would it fill up?

 
I believe I got mine for $9 a sheet. 3 sheets of the stuff I got was 27sq ft.
So how exactly does it work? I'm not following 100%. It expands, but you buy it in sheets?

 

---------- Post added at 05:07 PM ---------- Previous post was at 05:07 PM ----------

 

How is it better than gap filler foam?

 
So how exactly does it work? I'm not following 100%. It expands, but you buy it in sheets? 

---------- Post added at 05:07 PM ---------- Previous post was at 05:07 PM ----------

 

How is it better than gap filler foam?
Its foam that compresses to fill. The foam your talking about can screw you up big time. What happens if you have wiring issues and have to get a wire through where you foamed? What happens when that **** gets old and crusty? The CCF also wont make your panels bulge either.

 
Its foam that compresses to fill. The foam your talking about can screw you up big time. What happens if you have wiring issues and have to get a wire through where you foamed? What happens when that **** gets old and crusty? The CCF also wont make your panels bulge either.
Ok. Where I was going to foam there wasn't **** in. I mean no wires or mechanical devices. It was just emptiness. Anyways, can you provide me a link?

 
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