I recently had laminate flooring installed in all rooms in my house except the kitchen and bathrooms. I've been hearing crunching/ crackling sounds when walking on the floors particularly in areas where T-bars were not installed such as where the doors are positioned in the adjoining rooms. Is it possible to remedy this by having T-bars installed without damaging the rest of the laminate?

Did you stagger your seams 12" apart? How is the perimitaer spacing for expanstion.
T-bar won't remedy the sounds.