Tape to attach ducting to extractor fan

mnbvcxz

Lying in my loft space are white (pvc?) flexible 100mm duct pipes running from the bathroom extractor fan to the side of the house and then outside.

They have either perished or been chewed by animals to the bathroom steam is now just spilling into the loft space.

It looks easy to buy more and fairly straight forward to replace them. But where they attach to the inline fan and the vents they have black tape wound around the join.

What do you think this black tape might be?

My first thought was duct tape, though some people say that's not great ducts, but that may not apply to just bathroom air.

Possibly self algamating tape? But doesn't seem very stretchy, perhaps already stretched out?

Anyway any ideas what would be best to use appreciated, then I can get on with it.

Thank you

martinthebandit

It's called duct tape for a reason.

andyhop

I prefer insulating tape,allows you to wrap it tight. 30 wraps over a few inches

We’ve pulled many 5yr bathrooms out that have been jointed with duct tape and the adhesive dries out and fails

Fire_Fox

Consider upgrading the flexible ducting rather than a temporary bodge. The flexible stuff is not recommended because it is easily damaged and less efficient than solid ductwork. See the current Building Regulations on the Planning Portal.

HTH.

Carrot007

Fire_Fox wrote: »

Consider upgrading the flexible ducting rather than a temporary bodge. The flexible stuff is not recommended because it is easily damaged and less efficient than solid ductwork. See the current Building Regulations on the Planning Portal.

HTH.

Ohhh. You got me interested.


I too have had such a problem.


Now not as much as the so loosely flexable nonsence installed by the previous owners that the flixipie was full of water. But the duct end fell out. At the wall end.


I bodged it for now by stuffing in and filling the gap with old rags!


However proper ducting sounds like the thing to do! Do they come in sections for easy build? (like plumbing (waste) but bigger I guess?). Any chance of a link to the sort of stuff on some site (amazon on whatever!).

andyhop

Just use rigid soil pipework and fittings

mnbvcxz

It's called duct tape for a reason.

That's what I first thought. But then I read that ironically its often not as suitable for ducting...

insulating tape

Ah, now that you say it, yes that's what it must be. Thank you, that's what I will get.

Consider upgrading the flexible ducting rather than a temporary bodge.

I will give it some thought. Given the five meter run across the loft space from low to high it might be a little tricky to work out. At any rate for £15 I can remedy it now with flexible ducting and insulating tape so I'm going to start with that... But thank you for the good suggestion for the future perhaps.


Thank you for all the replies, I'm glad I asked. Insulating tape and flexible ducting for now it is.

Thank you

Typhoon2000

Try a metal duct tape like
https://www.duckbrand.com/products/paint-diy-tapes/hvac-tapes/silver-188-in-x-50-yd

Jakg

For reference I used solid straight pipe runs, with flexible stuff used to tie it together.

I then covered it all in the insulated flexible ducting.

Straight as possible, least restrictive, insulated so that it shouldn't condense, and sloped so that if it does it won't pool.