Toe and heeling a bi-folding door is essential to ensure that it operates correctly. The principles of toe and heeling are the same for a bi-fold door as they are for traditional French doors. The reason the glass needs to be toe and heeled is because the weight of the glass in the door panels will causes it to drop and catch on the bottom track when the door is opened and operated. When we toe and heel, we are essentially using the glass to brace the door panel and to distribute the weight accordingly, so the glass supports its own weight.
Detailed below is a step by step guide to toe and heeling our bi-folding doors.
Step 1. Where to toe & heel.
Toe and heeling is always done in the bottom corner that is fixed to the runner and top corner that is diagonally opposite. This is repeated with every panel, so the glass needs packing in the bottom corner by the runner and the opposite top corner.
Step 2. Where to start.
The best place to start the glazing and toe and heeling of your door is at the hinged side where the doors will stack when they are open. Glaze the end panel first and then work your way along to the access door/first panel that will open.
Step 3. Place your first packer before inserting the glass into the panel.
Before you place the glass into the door, place a 2mm pack into the bottom corner. You can now place the glass into the door panel sitting it on top of the packer.
Step 4. Place your additional packers into the opposite top corner.
Pack the top of the glazing unit by filling the space between the top of the glass and the door frame, in the corner diagonally opposite from the packer you have just fitted.
Step 5. Use a glazing shovel to lever the glass.
Place your glazing shovel into the side of the glass about two thirds of the way up on the same side as you have just placed the last packers. Now lever the glass away from the frame and place packers into
Step 6. Similar process for the bottom glass.
In the same way that you have just levered the top of the glass, you now repeat the process at the bottom on the side where you initially started. Again, use your glazing shovel and lever the glass away from the frame. Fill the space that you have created with packers.
Step 7. Insert the glazing beads
Once the toe and heeling completed you now need to install the glazing beads that secure the glass in position. This is done by starting with the top bead to secure the glass. When putting the beads in, angle them backwards and then click the front in. This is the easiest method for inserting the glazing beads. Once you’ve fitted the top beads, repeat the process for the side and bottom glazing beads.
Step 8. Insert the gasket
To complete the job, you now need to insert the gaskets in the space between the glass and glazing bead. Begin by cutting the gasket for the top and bottom of the panels. The gaskets can be cut square and can be easily fitted using some window cleaning solution to help lubricate the gasket so it can be slide into place. Start in the corners by pushing the gasket in with your thumb and then work your way across the centre.
Step 9. Insert the side gaskets
The side gaskets need cutting to a 45-degree angle, so they are shaped to fit into the corners. The end of the gaskets will appear like you have cut them to a point. You simply then fit the side gaskets following the same process as described in step 8.
Repeat these steps across all your bifold door panels and the installation of your stunning new bi-folding doors is complete.