Our bus won't start, NO!!!! Well, something has drained the batteries, so while we wait for them to charge up we carry on with work.
Before we can put our subfloors down we wanted to make sure we insulated the floors where possible.
We had kept some of the floor insulation that was in the back of the bus, near the engine. We took it out, let it dry (as there was a leak around the restroom area), vacuumed it and put it back in. It is a soft black rubbery foam sheet that we assume must have sound absorbing insulation as it was only used near the engine. We had taken out fiberglass insulation in some areas plus there is the hollow air ducts from the air conditioning. We are not using the original aircon, so it seemed best to fill in these ducts with foam board insulation to prevent any air or moisture coming up into the floors and then seal the cracks and gaps with spray foam insulation.
In order to put our floorboards down we had to make a floor plan diagram and triple check our measurements before cutting the plywood.
The width of the inside of our bus is 8 foot 2 inches, a standard piece of plywood is 8 x 4 foot. That means we would not be able to add subfloor using just 8 x 4 plywood sheets across the width of the bus, but would have to cut several sheets measuring 2 foot 1 inch for the subfloor sides and an 8x4 down the middle of the bus (See our video for a diagram of this).
This was all made more difficult by the fact that we needed our subfloor boards to align with the bus floor frame to have something to screw the wood into. So this required lots of measuring and cutting the boards to size.
We get the center floorboards down, but not without trial and error.
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Spray Foam Insulation
It forms a long-lasting, airtight, water-resistant seal. It helps keep insects, moisture/condensation and allergens out. Adheres to wood, metal, masonry, glass and most plastics. We used these cans just