  We present the matching of the next-to-leading order QCD calculation for
W+W+jj production via vector-boson fusion in hadronic collisions to
parton-shower Monte-Carlo programs according to the POWHEG method. Our
implementation complements existing code for QCD-induced W+W+jj production in
the POWHEGBOX package, thereby providing a platform for the complete Standard
Model production of W+W+jj events via QCD and electroweak interactions. The
impact of parton-shower effects is discussed for various distributions and
found to be small in most cases. However, few observables, that are relevant
for analyses using a central jet veto, are modified significantly when they are
interfaced to a parton shower program.
