Sub Floor Question

[Akronguy]

I am replacing a large section of plywood subflooring in my 93 25 ft Excella. Because the weather is getting cold, should I put the pieces tightly inside the c-channel or leave a 1/4 inch space for when summer humidity kicks in? The boards will be tightly screwed to the frame, so not sure what the correct procedure should be. Thanks in advance.

[dbj216]

Hello Akronguy, I think the C channel defines the perimeter of the outside skins on the trailer. Your C channel may be like a upside down F channel alongs the straight sides of the trailer. I don't think you need to worry about thermo expansion differences between the steel frame, wood subfloor, and aluminum shell. I had maybe an eighth of an inch difference between the C channel and the sub floor, mainly because I could't drive it in any farther.

David