I had double glazed windows fitted about three years ago into my kitchen and, although little use since they have been okay until now. With this heavy rain of late, damp has come in over the wooden lintel and into the inside of the kitchen. On inspection outside (see photos), there is no sloping guard to direct any rain away from the window, so it seems to curl around the top lip and gets inside the kitchen. The windows were fitted flush with the outside wall (a mistake??) and what should I ask for to rectify this - is there a sloping thing to fix across the top of the window?