On 15 Dec 2006 05:30:37 -0800 Sm_jamieson wrote :
But I've been looking at the UPVC windows around and the trickle
venting seems to be ugly sliding things on the inside, horizontal
slots on the outside, and looks horrid. Also, it is a noise path
even when "shut". What is the alternative to these, that will
satisfy the regs ?

Airbrick (probably plastic louvred to get the area) outside,
hit-and-miss vent inside. You could like the opening between the two
with acoustic tiles to reduce any noise.

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk