Last year I had replacement windows fitted by an installer registered with Fensa (which I checked via the Fensa web site). I used them previously in 2004 - and a Fensa certificate was sent fairly quickly.
The original wooden windows that came out of this installation had plastic vents at the top (trickle vents I believe) which we generally had closed. The new windows fitted do not have these vents at the top but instead can be locked in a slightly open position allowing venting.
I ask because Fensa want to send round an inspector. I was working on the basis that if I used a Fensa registered installer the compliance with building regs came sort of automatically.
Is the two stage opening system - ie. that the window can be locked in a slightly open position an acceptible alternative to trickle vents or am I now not building reg compliant ?