Leaking windows

adonis10

We have lounge and bedroom window leaks, which looks to be caused partly by failing render outside and gaps underneath the window sills inside. Upstairs it appears to emanate from higher up, as shown in pics below. Any advice? Full window replacement, maybe? If so, would this result in new plaster being needed for the walls?





Two above show where the water is coming from in the lounge.





These final two show where the water is running from in bedroom - you can see this is underneath sills and running down wall. Bear in mind these two were taken when it happened during decoration, but it is the same issue. Foolish not to fix it when it happened previously, I know.

phil24_7

Seal around the frames (top and sides) and under the cill externally, leaving the join between the cill and the frame free of sealant as this is to aid drainage from any moisture in the frame. If it still leaks after this then you may need to seal between the cill and frame but only an inch or so at either side to stop penetrating rain.

thebaldwindowfitter

does the upstairs bow window have a flat roof or slate/tiled if so has this been checked it could be leaking and going straignt down the circular bay poles between the frames then if they have fixed through cill on frame tracking straight through .Downstairs could be similiar or getting through rendering .