New fascias and gutters installed but now the roof tiles don't quite reach the gutter in some places and rain falls down the gap and i fear for the brickwork below. Is there any weather proof material i can use (beside lead) to slot under the tiles and over the guttering to cover the gap. I've thought of roofing felt but i live in north england and don't think it will stand up to a harsh north wind. Any suggestions for a suitable way to repair this situation without lead flashing the lot as this would be very costly.
Thanks in advance
Thanks in advance