Mon, 25 May 2026 01:07:07 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=856&Focus=9280#Comment_9280 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=856&Focus=9280#Comment_9280 Mon, 12 Nov 2007 15:15:06 +0000 Paul_B
I need to replace the current fan in my ensuite urgently as it is broken and the level of condensation is causing mould. I want to use the existing wall grille and fit a fan to remove this moist air. Currently the ducting is thin flexible plastic (like tumble dryer hose) and passes into the loft which causes lots of condensation.

Whilst I am fitting the new fan I am thinking of replacing the flexible duct with rigid duct. Therefore, should I use plastic duct, metal duct, pre-insulated duct or insulated sleeving from the likes of Kingspan or Knauf?

Paul]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=856&Focus=9283#Comment_9283 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=856&Focus=9283#Comment_9283 Mon, 12 Nov 2007 16:08:45 +0000 tony
You would be better wrapping it in quilt.

I have given you the easiest solutions to the problem so far.

I you want rigid fine again wrapping it in quilt is easiest making a box round it with insulation sheets seems like too much hassel. Also vert difficult to do well.]]>