What are the instructions for installing aluminum windows without a nailed fin? The installation in masonry begins with section 3 'Prepare the Blo...

The instructions for installing aluminum windows without a nailed fin are as follows: 1. Start by preparing the block/masonry wall or the wall with open supports, depending on the type of installation. 2. Ensure that the width and height of the window are each 1/2" smaller than the width and height of the opening in the wall. 3. Check that the opening in the wall is square, with measurements (A) and (B) being equal. The maximum acceptable deviation from the square condition is 1/8" for windows with an area of 20 square feet or less, and 1/4" for windows with an area greater than 20 square feet. 4. Verify that the opening in the wall is level (C) and (D). The maximum allowable deviation is 1/16" for every 2" of opening in the wall, not exceeding 1/8". 5. Ensure that the sill of the opening in the wall is not protruding or sunk (D). 6. The exterior face of the opening in the wall should be on a single plane (E), with less than 1/8" deviation from one corner to another. 7. Check that the opening in the wall is structurally firm. Correct any deviations before proceeding with the window installation. 8. If you are installing a window in a masonry wall without a construction frame, cover the entire unfinished surface of the opening with liquid-applied flashing or flashing with its own adhesive, following the same instructions as if there were a construction frame. 9. Seal any joint over 1/16" in the construction frame and between the construction frame and the concrete and masonry. 10. Cover the construction frame and the concrete and masonry around the head and jambs with liquid-applied flashing. 11. If the installation is within a four-sided construction frame, seal the threshold in a similar manner. 12. Use shims that are 1/2" shorter than the depth of the window threshold, level with the opening threshold, and no more than 1/4" thick. 13. Shim the threshold at 4" from each corner, at intervals of 8", and on both sides of the fused joints with water-resistant or compressible shims. Secure all shims with sealant. 14. After removing the previous window, remove enough cladding. These are the general instructions for installing aluminum windows without a nailed fin. It's important to consult the specific instructions provided by the manufacturer for the particular window model you are installing.