If there is anything peculiar about the windows that should be noted in their manufacture, jot it down also, leaving nothing to memory. In measuring the length, allow about one foot extra for a couple of laps around the roller when the shade is all pulled down. Austrian shades need no extra length, but should just clear the sill when down full length.
Shades running horizontally, as across the bottom of a skylight, are treated exactly the same as explained for Figure [95], and if very large, stretch a number of wires lengthways beneath the shade to help support it.
Put up shade brackets with the slot or open bracket to the left side of the window and the hole or closed bracket to the right, leaving a little play between the brackets and the roller. Place the shade in the brackets and pull it down full length. If the spring is too weak to carry it up smartly, take it out of the brackets and roll it partly up, replace it in the brackets and try it again. If still too weak, take it out and roll up a little higher.
If the spring is too strong or will not allow the shade to come down full length, take it out of the brackets when rolled up and unroll it a little.
Do this until the roller will carry the shade smartly without too much tension, and if you find the roller is not strong enough it is always better to replace it with a heavier one before the customer makes a complaint.
ARCHWAYS AND ALCOVES
Fig 100
