are of a suitable material such as high strength fiberglass graphite polyaramid or nylon roving 35 may desirably include a mixture of fibers of different materials roving 35 may be pre cut into lengths or each piece of roving 35 may be cut as needed each length of roving 35 is inserted into borehole 34 such that one end of roving 35 is at or very close to the bottom of borehole 34 and the free end 37 of roving 35 protrudes from borehole 34 such as by 0 5 to 2 inches if the diameter of roving 35 is substantially less than the diameter of borehole 34 it may be desirable to fold roving 35 in half and insert the folded end into borehole 34 this is conveniently done by pressing the folded end of roving 35 into borehole 34 with a tool such as a screwdriver in this case obviously roving 35 must be cut into lengths that are twice the depth of borehole 34 plus 0 5 to 2 inches borehole 34 with the inserted roving 35 is then backfilled with a suitable backfill material 36 such as a hardening adhesive resin which may be epoxy silicone acrylic or other suitable material that has high cohesive strength and good adhesion to wood and roving 35 backfill material 36 after hardening anchors roving 35 into borehole 34 roving 35 is inserted into borehole 34 such that free end 37 protrudes by a slight amount such as 0 5 to 2 inches after borehole 34 is backfilled free end 37 is attached to a surface of framed.