Outdoor to indoor swimming pool apparatus

A foldable enclosure extendable from a structure to enclose a pool or spa, comprising:

• an outer wall slidable away from the structure to move the outer wall into an expanded state;
• first and second side walls, pivotably attached at the structure, the first and second side walls mating with the outer wall in the expanded state;
• a roof, disposed to cover at least a portion of a front face of the outer wall in a folded state, the roof moving to cover an interior of the foldable enclosure as the outer wall is moved away from the structure toward the expanded state;
• and
• a floor sealing member extendable from the structure, the floor sealing member providing a seal between a surface and the outer wall and the first and second side walls,
• wherein the outer wall includes first and second tracks, each extending vertically along opposing sides of the outer wall, the first and second tracks extending along extension arms extending rearward from a front of the outer wall.

A foldable enclosure extendable from a structure to enclose a pool or spa, comprising:

• an outer wall slidable away from the structure to move the outer wall into an expanded state;
• first and second side walls, pivotably attached at the structure, the first and second side walls mating with the outer wall in the expanded state;
• a roof, disposed to cover at least a portion of a front face of the outer wall in a folded state, the roof moving to cover an interior of the foldable enclosure as the outer wall is moved away from the structure toward the expanded state;
• a floor sealing member extendable from the structure, the floor sealing member providing a seal between a surface and the outer wall and the first and second side walls;
• and
• a pool cover extendable from the structure to form a floor surface over the pool or spa, adjacent the structure, to permit users to walk on the floor surface when not using the pool or spa.