Haas has confirmed they will appeal Romain Grosjean's exclusion from sixth place at the Italian GP on Sunday.

The Frenchman had survived early contact with Sergio Perez to go and beat both Force India's and finish as the top midfield runner at Monza.

However, after the race, Renault issued a protest questioning the legality of the floor on the VF-18 which the FIA duly responded to and agreed it didn't meet the regulations.

Aware of the possible situation, which was caused by a technical directive issued by the governing body's head of aerodynamics Nikolas Tombazis, Haas wrote a letter explaining their situation.

“Given the forthcoming summer break, we will endeavour to introduce this upgrade for the Singapore GP, but will be somewhat at the mercy of our suppliers so we would request some flexibility in this matter," the American team wrote, with all cars meant to be compliant by this past weekend.

It appears that flexibility has not been granted, however, resulting in the exclusion from the Monza race.

“We do not agree with the Stewards’ decision to penalise our race team and we feel strongly that our sixth-place finish in the Italian Grand Prix should stand. We are appealing the Stewards’ decision,” team boss Guenther Steiner said.