Anyone out there bought a Walton 10` x 10` workshop lately?

Just erected mine and the idiots dont give you enough felt to cover the roof.

A 14m roll (1m wide) does not cover 2 roof panels (1.8m x 3.2m each) with enough allowed for proper laps, overhang at front and a covering ridge piece.

Tried to explain this to the woman at Waltons and (being a woman) she could not understand the concept!!

Found it well frustrating especially after spending over £500 on the bugger!