A sagging mattress doesn’t offer proper spinal support and also will leave your spine painful and stiff when you awaken in the morning. A mattress and springs naturally grows indentations from years of normal use, though, a mattress may also sag prematurely because of manufacturer’s defects. When yours is still under warranty and you wish to place a claim with the manufacturer, the extent of the sagging must be accurately measured.
Remove all bedding from the mattress including sheets, pads and foam toppers. The first top of the mattress needs to be exposed so that you can accurately assess the depression.
Smooth the top of the mattress with your own hands. This gets rid of any probable wrinkles in the fabric which could cause the dimensions of the puffy to be incorrect.
Lay string throughout the width of the mattress so it reaches from 1 side to the opposite one. It must cross over the deepest part of the depression. Secure 1 end of this string into the edge of the mattress using a strip of painter’s tape which does not leave a sticky residue on the fabric when it’s removed.
Walk into the opposite side of the bed and gently pull the unsecured end of this string until it is taut. Secure your end of this string using a strip of painter’s tape. Even though the majority of the string rests at the top of the surface of the mattress, it does not make contact in which it crosses above the puffy portion.
Pull the metal measuring tape in order that it extends a couple of inches from its housing. Place the end of the tape so that it touches the bottom of the sagging part of the mattress alongside the string. Hold the housing upright at a right angle into the mattress. Read the dimension in your own tape in which it intersects the string. This tells you how far your mattress is sagging.