Old Parquet Floor Repair

I have a room that is actually an old sun room that was enclosed by the former homeowners (surprise!). It is set on a foundation with a crawl space. The floor doesn't seem too solid (it seems to bounce when walking on it) and the room gets rather cold in the winter.

The old parquet flooring is starting to buckle near the doorway (probably due to moisture and adhesive failure). We'd like to repair the existing parquet tiles and put Pergo over it. Any advice on how to repair the old tiles? Also, should we place a second subfloor over the old tiles to give the floor more stability? Would Pergo work under these conditions? Any help is appreciated!!

 

If the floor feels bouncy and it's over a crawl space, I would want to know what is going on under the floor. Do you have a polyethylene moisture barrier to cover the soil in the crawl space? Are there moisture problems or standing water? Are the joists on 16" centers and in good condition? Do they need bracing? Was the subfloor under the parquet properly installed? Your new floor covering installation will only be as secure as the subfloor and floor covering beneath it. If you plan on covering the parquet with Pergo, if all substrate issues have been addressed, then all you need is to be sure that it is secure and level as it will be covered with the manufacturer's recommended pad and then the laminate product. Are there moisture issues at the doorway that need to be addressed? Does rain enter under the door? Are gutters clear? Is there an overhang or porch roof covering the entry to protect it from the weather? Is the door properly weather stripped? Is there a storm door? The Achilles heel of laminate products is moisture. Make sure all issues are addressed before you begin installation. Follow manufacturer's recommended installation procedures to make sure there are no warranty violations. Best regards.

 

Thanks for your input. The problem is that we can't access the crawl space, so we don't know what's going on down there. I would suspect that the addition was not properly constructed, since the people that owned the place before us did everything half-as*ed. In a perfect world, we would raze the addition and rebuild. But, there are so many problems with this house that we simply can't afford it right now.

Rain water came into the room by the door because it was open. I think the floor was 20 some odd years old, and it was pretty poorly installed, so I suspect the adhesive just gave way.

I figure that if we can repair the parquet floor and put a 3/4 inch subfloor over it and then put a layer of Pergo, it will give the floor some more stabilty. But I could be wrong.

Regardless, I need to know how to repair the parquet floor. Should I take up the loose tiles and replace them like ceramic tiles>

 

If all the little pieces of the tile are still present, could you not simply reglue the loose tiles? As you plan on covering the tile layer with wood underlayment, the tiles would be covered. Best regards.