Just woken up at 5am yet sgain with lower back pain caused by our bed. Expensive new super king bed bought 11mths ago from a large retailer with a built in mattress topper. Initially uber comfortable (and we spent ages 'testing' the beds in the shop before we chose), after a few months we noticed both sides where we sleep were starting to dip. It appears to me the filling in the built in topper is compressing. This has gradually got worse & worse, so I called the shop to report it as there is a 5yr guarantee and they arranged for an independent company to come out and check.
Guy eventually turned up at 4pm this Monday to look and test the mattress and prounced the 'sag' was measured at 25mm so 'within acceptable limits for the age of the mattress'. There is a prounounced ridge in the middle and on either edge of the mattress from where neither of us sleep and the test was a bit of string with two small weighted bags hung across the bed with a small measuring chart approx 20cm wide then placed in the dip. At no time were any weights put in place to measure the effect of a body lying in the bed.
I suggested to him that had he turned up early in the morning after we had just got up that the sag would have been considerably worse. I then replicated his test with dog poo bags with 5 x 12b cartridges in each on the end of a piece of string and got the same 25mm sag. Next morning straight out of bed, measured again and it was 35mm.
So my question is does anyone on here have any industry knowledge of beds and how they should be tested please or any experts on the sale of good act. We haven't had the report back yet but I am expecting that it will come back as all is well when it clearly isn't. Any advice appreciated, as Mrs D is very unhappy at being woken every day at 5am!
Guy eventually turned up at 4pm this Monday to look and test the mattress and prounced the 'sag' was measured at 25mm so 'within acceptable limits for the age of the mattress'. There is a prounounced ridge in the middle and on either edge of the mattress from where neither of us sleep and the test was a bit of string with two small weighted bags hung across the bed with a small measuring chart approx 20cm wide then placed in the dip. At no time were any weights put in place to measure the effect of a body lying in the bed.
I suggested to him that had he turned up early in the morning after we had just got up that the sag would have been considerably worse. I then replicated his test with dog poo bags with 5 x 12b cartridges in each on the end of a piece of string and got the same 25mm sag. Next morning straight out of bed, measured again and it was 35mm.
So my question is does anyone on here have any industry knowledge of beds and how they should be tested please or any experts on the sale of good act. We haven't had the report back yet but I am expecting that it will come back as all is well when it clearly isn't. Any advice appreciated, as Mrs D is very unhappy at being woken every day at 5am!

