marcarolle wrote:
We have the same problem with our 2004 Antigua 21SSO. Soft floor at the front, in between the 2 cabinets. My RV Tech reinforced it twice, while trying to figure out the spot where the water comes in. It is still soft, and cracking. However it holds up well because he reinforced the frame underneath with 2"X4"s.
We have come to the conclusion that the next and final work to be done on the floor will be to lay a thin sheet of plywood all over the current floor, and install new cushion floor on top of it. This will be done without removing all the cabinets, slide-out and furniture. Of course, before laying the plywood, we will install some sort of waterproofing membrane to protect the new floor.
By that time, the HTT's value will already be quite low. We would not be getting much anyway as a trade-in, and I would have to sell it a handyman project, as suggested by one of the posters above.
We are likely to be the last owners of our HTT. We really like our Antigua.
I would check underneath the front section, in mine the membrane separated from the aluminum frame right under the front storage compartment. Water could enter there easily. Also, check your slide seal, especially at the top. When my slide is closed, I get a little bit of water seeping in, it will stay on top of the slide roof and drip down onto the floor by the wall. Overtime this water will make its way to the lowest point and since it has no way to evaporate it will rot rot rot until you fall through the floor.
I understand your attachment to the Antigua, we both have identical layout and the trailer has an amazing amount of room when the slide opens. My only complaint is, it could have a little bit more usable storage.