three-story corporate building at the host of formula one 's british grand prix - was affected by the winds on sunday and monday .
images on social media appeared to show a section of the roof had been removed .
silverstone officials say engineers began assessing the damage on wednesday .
silverstone 's sporting director , stuart pringle , says in a statement that the site ` looks a bit of a mess at the moment ' but ` the damage is largely cosmetic , and the structural and functional integrity of the roof remains completely intact that