Front door with a u-value of 1 or less?

[Selfbuildnewbie]

Hello

 

We’re looking for suppliers that can make front doors with a u-value of 1 or less and wondered if anyone can suggest options for us to look at?

 

We’re aware of the green building store and internorm (though the style seems a bit modern for us) and I've sent a enquiry to solidoor as it’s not clear what u-values they can offer.
 

We’re after something quite traditional but this isn’t one of the items we are going to be particular over, just looking to meet the requirements for a reasonable cost.

 

Thanks in advance

Edited February 27, 2023 by Selfbuildnewbie
Typo

[MR10]

Ecowin suppy zylefenster doors with u values < 1.0. Nordan probably do them as well.