Hi Guys
Thanks for your help, I went back today and pulled up part of the carpet as Mike suggested and couldnt find any evidence of urine stains on the backing.
Looking at my pictures I posted on here and seeing it again today and taking more pictures, the pictures really dont show up the problem that well, that said it doesnt look as bad as when I saw it on Monday anyway.
When I saw it on Monday it was in artifical light, today it was earlier and bright and sunny and then it dawned on me that the bedroom is a loft conversion with two windows in the sloped roof and the staircase has a sky light, It crossed my mind today that the colour change could possibly be from sun light as there are none of these stained areas where the bed was or on the other part of the stair case which receives very little natural sun light. Is it possible that this could be a contributing factor? could sun light cause blotchy bleaching that looks like staining? or am I just p1ssing in the wind?
I had an amicable discussion with the customer and gave him some suggestions on what the cause may be and said that I dont think its anything that I have done wrong, I didnt want it to appear that I was washing my hands of him so told him to discuss with his wife what I had said and if they are not happy with my explanation then to email me on Monday and I will forward my insurance details. Right thing to do or not?, I could not think of anything else.
Tony