No threshold wheelchair accessible doorway

MouldyOldDough

We need a "No threshold" doorway in to a new extension (wheelchair accessible) ie totally level

How will rain and wind be prevented from entering the building ?

CSI_Yorkshire

What about using a drop-down seal on the bottom of the door?

I've seen that used for disability and fire-safety compliance for building regs.

https://www.gjohns.co.uk/surface-mounted-bottom-of-door-automatic-drop-down-weather-draught-acoustic-seal-37db-range-saa-aluminium.html

MouldyOldDough

CSI_Yorkshire said:

What about using a drop-down seal on the bottom of the door?

I've seen that used for disability and fire-safety compliance for building regs.

https://www.gjohns.co.uk/surface-mounted-bottom-of-door-automatic-drop-down-weather-draught-acoustic-seal-37db-range-saa-aluminium.html

I don't like the idea of an add on 
This must be such a common problem 
I was wondering what other people did

stuart45

On new builds one method used to achieve a level threshold is to stop the landing area a bit short of the cill, and have a drainage channel below. The channel will take away any water. You need a cill, even if it's a low rise one.

Jonboy_1984

I haven’t come across a no threshold, started looking at low threshold a while back, and the standard seems to be a threshold of no more than 20mm and typically around 12mm. 

They mostly look to have a drainage channel immediately outside.

MouldyOldDough

Jonboy_1984 said:

I haven’t come across a no threshold, started looking at low threshold a while back, and the standard seems to be a threshold of no more than 20mm and typically around 12mm. 

They mostly look to have a drainage channel immediately outside.

But is there a gap under the door? 

twopenny

I have a cobbled together threshold that is excellent for protecting the door between ramp and hall but it does have add ons which you say you don't want.
Used to be used to keep wheelchair dry also but for me it's a great place to sit in winter and read a book with a beautiful view.

BUFF

MouldyOldDough said:

CSI_Yorkshire said:

What about using a drop-down seal on the bottom of the door?

I've seen that used for disability and fire-safety compliance for building regs.

https://www.gjohns.co.uk/surface-mounted-bottom-of-door-automatic-drop-down-weather-draught-acoustic-seal-37db-range-saa-aluminium.html

I don't like the idea of an add on 
This must be such a common problem 
I was wondering what other people did

You can also get integral versions that fit into a routed slot in the bottom of the door e.g. https://www.gjohns.co.uk/concealed-bottom-of-door-automatic-drop-down-weather-draught-acoustic-seal-37db-range-aluminium.html.
Pretty much any modern door is going to have some kind of seal fitted to meet regs..

You can also get Part M compliant low profile sills e.g. https://www.stormguard.co.uk/product-category/part-m-compliant/

MikeJXE

I had a low threshold door about 15 years ago, cost £1100 10 year warrantee at the time fixed by a specialist 

There was a slot under the bottom edge that stopped water ingress

The rubber seal in the slot worked it's way out after about 2 years, was fixed a couple of times but the fault was never cured fully