Updated on May 4th, 2025
When we built our first van in 2018, the most controversial thing we did was to not insulate under the van’s subfloor. We still stand by that decision because it was a standard height van, and every inch we could eek out mattered. Choosing not to insulate the floor gave us an extra inch of height. Also, as we’ve talked about before, we built our first van as a weekend adventure van. This new van is going to be our home about 30% of the year! So the internet can rejoice, we have decided to insulate the floor!
Even though we decided to insulate the floor, we didn’t start with insulation. We started with cutting the plywood subfloor pieces. Foam insulation may be easier to cut but it’s also easier to break when you are moving it in and out multiple times to test fit. So, we decided to cut the wooden pieces first and then use them as a template for the foam pieces.
We used scribing for the mostly square pieces and we used a tick stick for the more complex cuts around the wheel wells. Never heard of using a tick stick? You aren’t alone! It’s a technique that Andy learned from a boat building book written in the 80’s and we’ve used in several projects over the years! Check out 07:25 of our Van Subfloor Video for a full explanation!
Once all items were cut, we did a dry test fit of the van subflooring. Immediately we noticed a lot of movement at the gaps and decided that we would need to add in furring strips where the pieces came together to add strength. We put everything back together again and we were happy with the results and ready to start gluing and screwing!
We didn’t screw but rather bolted the floor in place using the tie-down anchors that are in the metal floor of the van. These anchor points allowed us to bolt the floor without having to add any additional holes to the floor of the van. So we glued the insulation to the metal floor, and the wood to the insulation and then bolted through both layers to the metal below. This floor isn’t going anywhere!
We will wait to install the pretty flooring until after we have installed the cabinets. It will be a pain to have to cut it around the cabinets but it also will be a significant weight savings as flooring is heavy.
Running Cost Breakdown
Note: All Costs are as of April/May 2024
- Insulation for Floor: $56.91
- Plywood for Floor: $135.66
- Adhesive: $25.92
- Bolts: $0 (Left over from a previous project)
New Costs: $218.49
Total Costs: $14,874.16
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