Now before the jokes start flying, allow me to explain that bouncy is not bouncy as in bouncy castle etc....
In our semi upstairs, the two rooms at the back, a bedroom and the bathroom, both kinda flex when you walk across the floor. Furniture wobbles a bit.
The house is '60's and the joists measure 7 1/2" x 2" and run side to side. Spans in those rooms are 3.6m, but it's the same for the two front rooms (which don't have the same problem)
What is the most likely reason?
In our semi upstairs, the two rooms at the back, a bedroom and the bathroom, both kinda flex when you walk across the floor. Furniture wobbles a bit.
The house is '60's and the joists measure 7 1/2" x 2" and run side to side. Spans in those rooms are 3.6m, but it's the same for the two front rooms (which don't have the same problem)
What is the most likely reason?