Insulating system for building blocks

Claim 1

An integrally formed insulating unit specifically constructed for insertion into each block cavity formed in a masonry block wall section, of the type which includes a plurality of masonry blocks each having spaced inner and outer wall portions, spaced cross web with top and bottom surfaces, each unit comprising, a main insulating body having upstanding side edges defining the length thereof to produce a sealing fit with the cavity side wall when inserted into a block cavity and having a depth substantially equal to the depth dimension of the cavity into which the body is inserted to combine with the bottom surface of the block webs to form a substantially continous horizontal bottom sealing surface, the upstanding side edges of the main body which define the length of the body being sufficiently yieldable to sealingly engage the wall surface of the cavity into which the unit is inserted in spite of dimensional variations in both the concrete block cavities and the length of the main body, a top capping flange integrally formed with the top of the main body and extending thereabove and having a portion extending longitudinally outwardly beyond at least one of the upstanding side edges of the body to provide a positive stop to limit the depth of insertion of the body into the cavity and overlie in sealing engagement the adjacent top web surface of the block and being of sufficient length and thickness to abut the edge of the adjacent copping flange and being sufficiently yieldable to produce a positive continuous seal with the continuous bottom sealing surface of the adjacent insulated block layer disposed thereabove in spite of the dimensional variations in both the concrete blocks and the insulating body units, and a plurality of spaced generally parallel crush ribs each having a generally tapered cross section and formed on the top surface of the capping flange and being sufficiently yieladable body to provide and a continuous seal with the continuous bottom sealing surface of the adjacent insulated block layer disposed thereabove.