When the wind conditions are extreme, such has when the Shade Sail is up higher than usual or liable to exceptionally strong wind conditions it may be necessary to build a full structure to support the sail. This can be done very tastefully to complement existing architecture and provide a very stable cover well suited to a fully waterproof Sail. Although this is a little more costly than a sail supported at the corners only, it becomes a valuable addition to your property providing an aesthetically pleasing area protected from the elements increasing the indoor/outdoor aspect of your living space and it is still very cost effective compared to calling in the builder.