  Extensions of the Standard Model Higgs sector involving weak isotriplet
scalars are not only benchmark candidates to reconcile observed anomalies of
the recently discovered Higgs-like particle, but also exhibit a vast parameter
space, for which the lightest Higgs' phenomenology turns out to be very similar
to the Standard Model one. A generic prediction of this model class is the
appearance of exotic doubly charged scalar particles. In this paper we adapt
existing dilepton+missing energy+jets measurements in the context of SUSY
searches to the dominant decay mode $H^{\pm\pm}\to W^\pm W^\pm$ and find that
the LHC already starts probing the model's parameter space. A simple
modification towards signatures typical of weak boson fusion searches allows us
to formulate even tighter constraints with the 7 TeV LHC data set. A
corresponding analysis of this channel performed at 14 TeV center of mass
energy will constrain the model over the entire parameter space and facilitate
potential $H^{\pm\pm}\to W^\pm W^\pm$ discoveries.
