Measuring and Mounting
What is so great about blinds is that you can easily measure the window yourself. They are so much easier to measure for than curtains as there is no need for a hem or seam allowance and furthermore no rings, tabs or tapes are required. Blinds generally attach directly to a window frame whereas a curtain will need rails and rings to hang properly. If measuring the area yourself you simply need to firstly decide whether you want to hang the blind inside or outside the window. If covering a bay window or a distinctive shaped window then an inside mound can emphasize and show off a window’s shape.
On the other hand an outside mount would be more appropriate when hanging blinds on windows of unequal sizes as this could balance their appearance. To ensure accurate results, it is important to use a metal tape measure. If measuring a window with a recess it could be beneficial to measure the width at 3 different points as it is often the case that the window is not consistent along the recess and then use the minimum measurement for your width measurement.
If measuring for roller, roman or venetian blinds then you should decrease the width by 1cm. Use the same method when measuring the length, ensuring you take 3 measurements and using the smallest. in order to stop vertical blinds from catching on the window sill you could reduce the length by 1cm. The rules are slightly different when measuring windows without a recess. In this case measure across the window width, then add an extra 10cm to the overall width to permit a 5cm overlap either side of the window. This will ensure that the light is blocked out effectively. Once you have decided where you want the bottom of your blind to end, measure the length of the window from the top of the fitting to this point.