Federer produced a near faultless display to defeat Roddick Photos from the match

The fourth seed barely put a foot wrong as a succession of clean winners and perfectly-placed volleys left Roddick floundering.

Roddick, who had dropped just one set in an impressive journey to the semi-finals, had no answer to Federer's fluency around the court in a disappointing performance.

Watch day 11 highlights

Federer hit 17 aces and fired his way out of trouble on the only two break points he faced in a totally dominant performance.

The match lasted just one hour and 43 minutes - even quicker than Mark Philippoussis' defeat of Sebastien Grosjean in the other semi.

Philippoussis sweeps into final

Roddick's one real chance at establishing himself in the match was wasted when he hit a feeble forehand volley into the net on set point in the first set tie-break.

Federer seized the initiative to take the tie-break 8-6 and went from strength to strength.

I'm very happy to have the opportunity to win a Grand Slam Roger Federer

Saving two break points in the opening game of the second set, Federer produced a majestic cross-court forehand to break Roddick for 2-0 and continued to hold serve to take the set.

A poor Roddick backhand into the net presented Federer with the break he needed in the fifth game of the third set.

And a succession of superb passing shots brought up his first match points on Roddick's serve at 5-3.

Roddick saved the first two but a wide forehand sealed Federer's well-deserved victory.

"It's incredible right now," Federer told BBC Sport.

"It is my favourite tournament so it is a dream.

Gamewatch: Federer v Roddick

"This was just outstanding - I hope I can keep this up for the final.

"I'm not thinking about the final at the moment - I'm just celebrating this victory.

"I'm very happy to have the opportunity to win a Grand Slam."

The 21-year-old will become the first Swiss player to play in the Wimbledon final when he faces Australia's Mark Philippoussis on Sunday.