What’s name of this putty?

[Kilt]

It’s just like linseed oil putty but looks to have sand in it. 
 

anyone know it’s name? I need to order some more to replace old stuff that was under an external door threshold. 

[Gone West]

It looks like burnt mastic, old school sealant.

 

https://www.womersleys.co.uk/shop/stone_repair_grouts_and_mastic/burnt_sand_mastic_10_litres

 

 

[Hobbiniho]

Also sometimes called "sand mastic" or "trowel mastic" it is used where there is a "large" variation in the height, it stays flexible and can be "trowled" into place

[Kilt]

Thanks!

 

its been used on all our timber windows and on a recent Timber door we had put in.

Sadly the storm threshold they used/came with the timber door isn’t fit for purpose.

So put a better one in today.