I’ve been to 3 different carpetright shops over the last week and they have all given me different quotes on the amount of underlay and carpet I need.
They have suggested;
Underlay amount required from 14m to 30m
Carpet 20m2 to 32m2
Not to mention fitting going from £125 - £185.
It’s for my stairs and landing.
Carpets are generally 4m wide roll.
I attach a drawing of the area, if anyone can help please. 