Very poor design and construction materials.

It took 4 days to assemble the Plastic Material is very flimsy the floor is approximately 3/8 of an inch corrugated plastic walking on it causes collapse. I weigh 200Lbs and kind of expected that. My Daughter weighs 130 and she experienced same collapse. I purchased it to be used by the Grand Kids as a Back Yard play house. My 2 and a half year old Granddaughter leaned against the wall and the amount of flex was scary I truly thought it was going to break. The discussion now is I am not going to take it apart to return so the alternative is to reinforce from the inside using plywood to stiffen up Floor and Walls. My Family is laughing at me because I thought it would be cheaper than building from scratch using plywood and 2x4's instead I will be paying twice as much building a wooden structure within a Plastic Structure. Assembly instructions were in many cases wrong and unclear. Drawings of extruded plastic was not even close. Save yourself aggravation and embarrassment build it from scratch out of 2x4 and plywood. I noticed the Walls and Roof are now starting to warp in the Sun Shine and it is only 71 Degrees Fahrenheit.