In the GTD build manual there is a disscussion in regards to insulating the cabin for a variety of reasons, and one of them is to strengthen the sills. They advise the expandable foam type of insulation, having properly treated the fuel tank so as not to "glue" it into the car. I decided to pass on that approach after experiencing the mess of injeting expandable foam into the void between the cabin and engine compartment. The foam worked great, but the mess was significant when the gunk shot out all of the holes and cracks.
So I picked up a piece of the Corning pink foam board at Home Depot and cut it to fit in the space above the fuel tank and it works great.Once the tank is in, I can stand on the sill without it deflecting and the sill is like a block of cement when I rap it with my knuckles.
I plan on gluing the foam board in with thier adhesive and then covering it with Dynamat to further reduce road noice and neaten up the appearance.
Has anyone used this approach and if so, do you have any observations that would be valuable hear before I get any deeper into this?
I know there is no one size fits all approach and I'll be using 5 or 6 different products and techniques depending upon where it will be applied and what the intent is.
Thanks
Brian
So I picked up a piece of the Corning pink foam board at Home Depot and cut it to fit in the space above the fuel tank and it works great.Once the tank is in, I can stand on the sill without it deflecting and the sill is like a block of cement when I rap it with my knuckles.
I plan on gluing the foam board in with thier adhesive and then covering it with Dynamat to further reduce road noice and neaten up the appearance.
Has anyone used this approach and if so, do you have any observations that would be valuable hear before I get any deeper into this?
I know there is no one size fits all approach and I'll be using 5 or 6 different products and techniques depending upon where it will be applied and what the intent is.
Thanks
Brian