AH92

Thanks For the support

I have had an AVV fitted on it since the discovery that it was completely open and venting into the loft space.

Upon inspection, I noticed that our soil pipe was not fitted with an air admittance valve for the entirety of the 5 years since I moved in. I also noticed that the extractor fan ducking hose had not been secured with anything. It was merely pushed onto the venting pipe. I have now fixed these issues but I am unsure how severely this could have impacted moisture levels in the loft. This is the first time since moving in, I have noticed such drastic water build up in the loft. The hatch seems to be fairly secure when closed.

They are trays. I have one tile vent installed and have now put in 10 felt lap vents to see if this eases the condensation build up? do you have any other tips/suggestion/thoughts as to why there is so much condensation build up in a new build property?

The temperature outside was 5 degrees when these pictures were took this afternoon. It rained just before I took the pictures. as you can see from some of the pictures, the water seems to be more concentrated in between the layers of the grey material (where it overlaps) which appears to be held by some sort of tape. I know this because I had to push away the tape when inserting loft vents. The areas where the timbers touch the grey material are also highly saturated.

The black is the water that has gathered on the grey material. The material touches a joist and when pushed back is full of water and therefore makes the material look darker. the loft boarding was fitted by a tradesmen who using plastic loft legs and installed the boarding onto these. The insulation is still laid underneath the boarded area. I did some further investigation and that Taylor Wimpey had placed insulation in the eaves of the roof. When I removed this, I could see more daylight coming through. I am unsure if this has contributed to the problem.

Another pic

Picture showing wet joist

I live in a new build Taylor Wimpey property that was built 5 years ago. I had my loft boarded about two years ago and then recently went into my loft to find that all my stuff was covered in mold and the sagging was wet and the point where some sort of taping was applied between the overlaps. I have since purchased vent flaps and moved insulation that was blocking ventaltion into the property. I have noticed that my timbers frames are really wet at the point where the black sagging touches the joists. I am really struggling to know if this is due to condensation or another issue? please see pictures