I need some help to fix our celing tile issue. I have been told by a contractor that our house is the 6th one this year that he has seen this problem with. We have a 15x22 living room in which we install the cty planks using the furring strip method 2.5 years ago and about 10 months ago we notice the ceiling tile near the front door sagging...to make a long story short we removed 1 tile and half of out rooms tile came down. There are some tiles on the other side that are loose but not sagging yet.....Any one know why this many have happened and how we can correct it......we are hoping not to have to spend alot of money since we just installed them 2.5 yrs ago and we have 3 other rooms with the same tile. Any help or ideals would be great. Thanks Glenda

Glenda