How to build a lean-to glasshouse
Step 14. Glazing time
When all the framework has been assembled and painted, measure up for the glass. Refer to the previous page for a size guide.
Apply a bead of adhesive silicon around the rebate and sit the glass on that. Hold it in place with little blocks of wood tacked into the side of the rebate until the silicon has cured. Then remove the blocks.
Alternatively you can hold the glass in place with a wooden bead - the off-cut from cutting the rebate would be ideal for that.