Laminated floor expansion - How do you install under seat?

I drilled a large 1 1/4" hole at each bolt and filled it with washers to a depth above the flooring level and then bolted the seat down. It has been two years and no problem.

You could cut the tiles so there's relief around a plywood plate you mount the seats on. That way the seats are always on solid ground so to speak.

My seats in my Marquis have a skirt around them and the flooring doesn't go under the seat mount just around them. You can't see any of that because of the skirt hiding it. It's a solid wood floor the prior owner had professionally installed. When I did laminate in my old Winnebago I didn't remove the seats at all .. just went around them the same way

I've installed a lot of laminate flooring.
The expansion dimension is over a relatively large area. So in somehting as small as a RV, you can take a few liberties with it.
It does need room to move but an 1/8" would be plenty. Just make sure it isn't binding anything anyplace.

ScottG wrote:
I've installed a lot of laminate flooring.
The expansion dimension is over a relatively large area. So in somehting as small as a RV, you can take a few liberties with it.
It does need room to move but an 1/8" would be plenty. Just make sure it isn't binding anything anyplace.

This is what I was thinking too, the expansion if probably overkill in an rv floor. But has suggested, the plywood under the seat would be a good idea, and cut around the seat.

I did vinyl planking which is not recommended for installation in non-climate controlled environments. My copilot seat is on a pedestal, so I cut a piece of 3/8" plywood to go under the pedestal and cut the vinyl around the plywood, leaving a 1/8" gap. I did the same under everything that got hastened through the vinyl into the subfloor. Finally, I left 1/4" all the way around, and double-stick taped the shoe molding to the vinyl. The key is to allow the floor to move as a unit.

Pergo runs 40 foot down my house and has 1/8 gap on each end. Compare that to the distance between your seats. Just bolt it down.

It doesn't move that much; don't worry about it.

I read somwhere that it is the subfloor that moves, this would be why you need some expansion space. Perfo itself is, I think, pretty stable stuff.

When I installed the hardwood floor in the house, I nailed it down, still I needed to have some space for expansion, so the whole thing needs expansion, floor and subfloor has an assembly. I tried to find what exactly is the expansion needed per square foot, could not find it anywhere on the web.

In a coach, expansion/contraction is not much concern in such a small area.