Help/feedback on a huge enclosure I’m making

Small update for the learning curve!

I tried to use a plywood board at a tilt (supported by 2x4 cuts) with some spray insulation foam for the drainage slant and realized I didn’t like how much enclosure space that cost me. I ended up ripping it all out today and decided to lay down some foam panels to level out the structural gaps in the bottom. Ignore the white pvc stump in the bulkhead, it’s getting removed shortly since it’s unnecessary now. I’m thinking of using lightweight leveling compound or mortar to build a thin slope toward the bulkhead drain but worried about the weight that might add on. I’d assume if it’s thin enough it wouldn’t be a problem but I’m no professional so if anyone can weigh in on that idea, I’d appreciate it!

For the vents, I stapled aluminum screen tightly to the inside and used gorilla waterproof sealing tape to cover the edges and frame it before I seal it again after the drainage is set. I used my miter saw to cut frames for the outer vents and will stain them tomorrow.

I can’t tell if I’m gaining or losing weight from this project. Will post more updates soon :)
 

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Small update for the learning curve!

I tried to use a plywood board at a tilt (supported by 2x4 cuts) with some spray insulation foam for the drainage slant and realized I didn’t like how much enclosure space that cost me. I ended up ripping it all out today and decided to lay down some foam panels to level out the structural gaps in the bottom. Ignore the white pvc stump in the bulkhead, it’s getting removed shortly since it’s unnecessary now. I’m thinking of using lightweight leveling compound or mortar to build a thin slope toward the bulkhead drain but worried about the weight that might add on. I’d assume if it’s thin enough it wouldn’t be a problem but I’m no professional so if anyone can weigh in on that idea, I’d appreciate it!

For the vents, I stapled aluminum screen tightly to the inside and used gorilla waterproof sealing tape to cover the edges and frame it before I seal it again after the drainage is set. I used my miter saw to cut frames for the outer vents and will stain them tomorrow.

I can’t tell if I’m gaining or losing weight from this project. Will post more updates soon :)
Hi, diy chameleon guys have a great tutorial on the chameleon academy youtube channel about building a drainage layer. You can use plastic corrugate board for the bottom and silicone seal the border. Check out rhe video. Really helpful.
 
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