What is the self deck of a sofa and should it cost $530 to repair it?

Home Improvement
0
Gina Paige

I have a La-Z-Boy sofa that is 18 months old and it is sinking. They have “repaired” it once to no avail, and now they tell me it will cost $530 to replace the self deck which they describe to me as the front rail. It was my understanding that La-Z-Boy has a lifetime guarantee on wood, metal and springs. Should this be covered? Thank you!