just had some new upvc french doors fitted. builder cut the hole in the wall, fitted a pair of concrete lintels and screwed the door frame to the walls.
now there is a gap of about 10mm above the frame up to the lintel for the whole 6 ft width.
whats the best way to fill the gap? i;m averse to expanding foam as its so messy and always oozes out all over he place.
also, the door seems to require fixing in the centre in the top and bottom frames, but the instructions said only screw the side frames to the wall.
what would a fensa guy do?