Five minutes later, Justin Carney got his side's second try of the game to increase their lead even further.
Wakefield had no answer to Castleford throughout the first half as Jordan Tansey grabbed himself a try before Sneyd added the conversion soon after.
Michael Shenton rounded off Castleford's fine first-half display with a try that gave them a 22-0 lead.
Sneyd kicked off the second half with a try and a conversion to maintain his side's complete dominance, with Carney getting his second of the game five minutes later.
Two tries in quick succession from Sneyd and Frankie Mariano all but confirmed the win for Castleford on 66 minutes.
Paul Sykes got a late try for Wakefield, though it was merely a consolation by then as Castleford secured the win with another try from Clark before the final whistle.