WindowNerd

Fair comment. I do agree that we can probably get away without tickle vents and that we may have a thermal bridge. Other rooms don't have this problem or at least not to this extent.

Thank you. Are they easy to retrofit?

Thank you. I didn't watch them being installed up close but recall seeing them seal the gaps. The fitters were very experienced and did a good job overall in my opinion. Sorry, what is MVHR? The old windows did not have trickle vents.

Hi everyone, I'm a homeowner and I've had the windows on my 4 bedroomed house replaced in May 2022. The old double glazed units were installed in the 80s and had seen better days. I oped for an installer that supplied and fitted Eurocell windows as I've had good experience with them in the past. In some rooms, the silicon used to seal around the windows had already gone mouldy by January. It looks worse than the 40 year old silicone did when they ripped out the old windows. It's worst in my daughter's bedroom - see photos. The window is on the catch most days for the whole day so lack of ventilation isn't really an issue. There's no damp or mould on the walls. The walls are cavity insulated. I've approached the supplier/installer and they have so far ignored my initial email. Am I being unreasonable for querying this? It seems like an oversight and they may have used the wrong silicone as even the bathroom window doesn't look anywhere near as bad, in fact that looks much better. I'm also wondering if they should have fitted trickle vents. I've read they became compulsory in June 2022 whereas my windows where fitted in May. When I asked about trickle vents at the point of purchasing they told me I don't need them. Many thanks, Stefan