building structure and the inner cleat portion 1526 extends generally horizontally along the upper surface 1514 of the building structure for securement thereto the inner cap portion 1536 is secured to the upper cleat portion 1522 by a spring clip 1540 secured to the upper cleat portion 1522 and having a free floating locator flange 1557 similar to that discussed above in all of the embodiments exemplified in fig2 through 27 a cover locator 1350 1450 1550 is disposed between the inside surface of the cover cap 1330 1430 1550 and the cover cleat 1320 1420 1520 the cover locator 1350 1450 1550 has upper and lower locator sides 1354 1454 1554 preferably with the upper locator side 1354 1454 1554 having an upper locator flange 1356 1456 1556 that is secured to the upper surface 1314 1414 1514 of the building structure a slidable free floating locator flange 1357 1457 1557 is adjacent to the lower side edge of the lower locator side 1354 1454 1554 in the exemplary embodiments of fig2 through 27 the lower locator side 1354 1454 1554 and the free floating locator flange 1357 1457 1557 intersect transversely to form a free floating locator side edge that is free to move or float relative to the cover cleat 1320 1420 1520 because of this arrangement the cover locator 1350.