Connection for vented tumble dryer into air vent

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The picture below shows an air vent in a kitchen with the internal plastic grill removed. It's just possible to see the external clay vent brick through the hole.

The hole measures approx 17 cm x 12 cm.

If I wanted to connect the venting tube from a vented tumble dryer into this, what sort of connector/connection would you suggest?

Thanks.

VENT.jpg
 
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1. That's an air brick, designed to provide an inflow of air to the space. If you block it with a tumble dryer vent you will lose that ventilation of the space. Might not matter, might result in condensation build up and mould.
2. Better to provide a new hole for the vent. Could be core drilled or stitch drilled, which is cheaper for a one off.
3. If you did want to use it you could:
3a. Smooth out the internal edges with Polyfilla or similar (after dusting and cleaning).
3b. Line with thin ply (to make it removable).
3c. Put a vent pipe in - select a suitable size to suit dryer vent pipe.
3d. Secure vent pipe with expanding foam.
3e. Connect tumble dryer pipe to vent pipe.
 
Thanks oldbuffer.

1. That's an air brick, designed to provide an inflow of air to the space. If you block it with a tumble dryer vent you will lose that ventilation of the space. Might not matter, might result in condensation build up and mould.

There's another air brick located close-by so should be okay using this. The two vents were originally there as the cooker had originally been there, but as the kitchen was extended, the cooker is several metres away from these vents now.

3. If you did want to use it you could:
3a. Smooth out the internal edges with Polyfilla or similar (after dusting and cleaning).
3b. Line with thin ply (to make it removable).
Is the above done to prevent any moisture/steam leakage from the tubing from going into the internal brickwork? That is, rather than just attach the tube directly to the inside of the air brick without the Polyfilla and plywood.

3d. Secure vent pipe with expanding foam.
Interesting - so secure the vent pipe directly onto the back of the vent brick using expanding foam. I had wondered what the vent pipe could be sealed/connected with to the air brick.
 
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No
You’d never be able to seal as required.
What you plan to do is to pump hot damp air into the wall which is a really stupid idea.

you either need a condensing drier or an external vent.

it might be possible to carefully remove the terracotta grid and store it, fit a vent and refit the terracotta after you no longer have a tumble drier but it’s bonkers. Unless your building is listed.
 
you need a purpose core drilled hole for the tumble dryer vent, you cant use an air brick
 
you need a purpose core drilled hole for the tumble dryer vent, you cant use an air brick
https://www.ebay.co.uk/itm/272119421017?hash=item3f5b94d859:g:uZ8AAOSwzhVWq-Ud

What about a kit such as above which has a brick-shaped centre?

There is another air brick located close-by. The two vents were originally there as the cooker had originally been there when the house was built, but as the kitchen was subsequently extended, the cooker (which has it's own vent) is several metres away from these vents now.

The two brick vents are redundant for their original use, so I had thought one could be used for this use.
 
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The two vents were originally there as the cooker had originally been there
Yup, the builder put in air bricks to vent a cooker. ;) Honestly, they weren't installed to vent a cooker. They would have been installed to allow the structure to breathe as part of the building regs. Is there or was there a suspended floor? A kitchen, in older properties was also ventilated to avoid condensation build up.

As suggested, air bricks are not designed to force vent anything. If there is a cavity then the TD needs a sealed through and through purpose made vent.
 
Yup, the builder put in air bricks to vent a cooker.
I had thought this was the intended original purpose, as originally there was no fan. So any steam would only be able to escape via the vents or by opening the kitchen window.

Is there or was there a suspended floor? A kitchen, in older properties was also ventilated to avoid condensation build up.
Originally there was a suspended timber floor. However, the entire floor (original section + extension) was created with poured-in concrete which was done when the kitchen was extended many years ago.

Does the concrete floor change matters?
 
Not being funny, but you've come here asking for advice, and have had several knowledgeable, Time Served Experts in their field give up their time to advise you what you need to do. I would only reiterate what they've said. Tumble Dryer vent kits are easily obtained, are inexpensive and will do the job you require, properly.

There is the correct way to do it, as already explained. Or a bodge which may come back to bite you later on.
 
Not being funny, but you've come here asking for advice, and have had several knowledgeable, Time Served Experts in their field give up their time to advise you what you need to do.
I haven't said anyone has given incorrect advice.
 
I haven't said anyone has given incorrect advice.

No, but despite several people telling you how to do it properly, you are still asking if the air brick can remain.... Air bricks were put in to allow an air flow in/out of the property. They were never designed for forced airflow, which is what a tumble dryer emits.

Secondly, the holes in the air brick will quickly block up on the inside with lint from the dryer, creating a major issue as the dryer relies on a constant stream of air flowing through to do its job. Lint build up and /or lack of air flow through the machine can be a major fire hazard.
 

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