Ultimate Rose is the epitome of the Rose Collection design philosophy – outstanding aesthetics and exceptional performance. Ultimate Rose is, quite simply, the UK’s most authentic timber alternative sash window.

We’ve re-engineered timber alternative sash windows from the ground up, looking at every seam and detail that differed from a timber original and designing it out. The ultra-slim 35mm meeting rail, the seamless run-through sash horns and even the internal sash interlock – has been redesigned to achieve what no other timber alternative sash window can; a smooth, seamless finish. The result is that even from close up, only an expert can tell that it’s not timber.