Hinged glass doors commonly are found on entertainment centers, cabinets and even in showers. A common style of hinge for this type of door is called an overlay-style hinge. One side of the hinge is designed to fit the glass in a U-shaped bracket, and the other side is designed to mount into a non-glass surface such as a cabinet casing or side wall. Select the type of hinge based on the size and location of the glass door. Particular attention should be given to the weight of the door so that the hinge can support it correctly.
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1.
Slide the U-shaped portion of  overlay hinge over the glass door. Align the hinge side with  side of the glass and with the glass even along bottom of the U-shape.
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2.
Screw the attachment screws through the side of the U-shaped portion to connect firmly with the glass. Some versions also use silicone adhesive and hidden attachment screws to improve the finish look. Follow the specific directions of the producer of your hinge set.
3.
Install additional hinges in this manner beside the side of the door. For smaller doors, two hinges are most common, one at the top and one at the bottom. For big doors, hinges are spaced every two maybe  three feet.
4
set the door in the opening and unfold the hinge to the casement or side substrate. Hold on  the door level and in the correct alignment, fix the second part of the overlay hinge to the casement or wall using the fitting fasteners appropriate to the installation.