Even if the insert is installed on top of hardiebacker concrete anchors will give you the support you need for hanging a frameless door of a reasonable size and thickness.
Installing shower door in fiberglass shower.
The installation process will vary depending on whether you re installing a swinging or sliding glass door but either way you ll need to start by assembling a frame for the door.
For the frame you ll need to install tracks at the bottom sides and top of your shower opening using sealant and screws.
Screw in the other side of the door frame image 3.
Place the door track in the middle of the bottom door frame of the shower.
Attach the seal strip to the bottom of the door and cut it to the required length.
On the side of the shower opening that will support the door hold a jamb piece against the wall so that its lower end fits into the base track.
Screw one side of the door frame into place on one side of the shower doorway image 1 and then dry fit the other side of the frame image 2 then the top of the frame into place.
Stick a pencil through the jamb s screw holes to mark the wall.
Hanging the door panels.
Secure the sides of the door.
How to install a door on a fiberglass shower.
Attach the door handles and any towel bars.
Place end caps on the tops of the wall channels.
Place the shower enclosure in place in your bathroom.
Drive screws through the pre drilled.
Acrylic shower walls that install by gluing panels to drywall are not an appropriate substrate on which to install any shower door.
Fiberglass gelcoat is short for gel coat fiberglass reinforced polyester more popularly known as fiberglass.
Make sure the taller.
There are some who would suggest that you should never install a frameless door in a fiberglass shower insert but i have done this in the past with good results.
Put the finishing touch on your shower door installation.
Measure the base of the shower doorway so that you can determine the length for the bottom shower door track.
Put on your safety glasses.
Installing the door panels is easiest from outside the shower.
Place the rollers on the top frame flange of both door panels and secure them with lock washers and machine screws.
Without moving the track use a 4 foot level to adjust the jamb until it s plumb.