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A drainage system to be installed against a foundation of a building. The drainage system includes a drainage board having a plurality of channels extending from a bottom side along a front face thereof, and a portion of filter fabric attached to a rear face of the drainage board that covers the fro

A drainage system to be installed against a foundation of a building. The drainage system includes a drainage board having a plurality of channels extending from a bottom side along a front face thereof, and a portion of filter fabric attached to a rear face of the drainage board that covers the front face of the drainage board. The plurality of channels comprise a plurality of left channels and a plurality of right channels that intersect to form a crisscross pattern.

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1. A drainage system comprising: a drainage board having a plurality of channels extending from a bottom side along a front face thereof, anda filter fabric attached to a rear face of the drainage board that covers the front face of the drainage board;wherein the plurality of channels comprise a plu

1. A drainage system comprising: a drainage board having a plurality of channels extending from a bottom side along a front face thereof, anda filter fabric attached to a rear face of the drainage board that covers the front face of the drainage board;wherein the plurality of channels comprise a plurality of left channels and a plurality of right channels that intersect to form a crisscross pattern,wherein the filter fabric includes a settling strip along a portion thereof,wherein the settling strip includes at least an outer segment, an intermediate segment, and an inner segment, andwherein the outer segment, the intermediate segment, and the inner segment are substantially parallel in a first state. 2. The drainage system of claim 1, wherein the drainage board comprises 2 inch thick extruded polystyrene. 3. The drainage system of claim 1, wherein the settling strip is held in place with a securement mechanism while the system is in the first state. 4. The drainage system of claim 3, wherein the securement mechanism includes at least one staple. 5. The drainage system of claim 1, wherein the plurality of left channels and the plurality of right channels intersect and form 90 degree angles therebetween. 6. The drainage system of claim 1, wherein the left channels and the right channels have a rectangular cross-section. 7. The drainage system of claim 1, wherein the outer segment, the intermediate segment, and the inner segment are substantially co-planar in a second state. 8. A drainage system comprising: a drainage board having a plurality of channels extending from a bottom side along a front face thereof, anda filter fabric attached to a rear face of the drainage board that covers the front face of the drainage board and includes a settling strip;wherein the settling strip is a multi-layered portion of the filter fabric that is folded over a single layered portion of the filter fabric. 9. The drainage system of claim 8, wherein the settling strip is held in place with a securement mechanism. 10. The drainage system of claim 8, wherein the filter fabric is comprised of a non-woven geotextile. 11. The drainage system of claim 8, wherein a tongue extends from one side of the drainage board and a groove is formed in an opposing side of the drainage board. 12. The drainage system of claim 11, wherein the tongue is formed to be fittingly received by a groove disposed in an adjacent drainage board. 13. The drainage system of claim 8, wherein the drainage board is formed from a polymer and has an R-value of at least 9. 14. The drainage system of claim 8, wherein the multi-layered portion of the filter fabric has a height of at least 12 inches. 15. The drainage system of claim 8, wherein the filter fabric is attached to the rear face at least 12 inches below a top side of the drainage board. 16. A drainage system comprising: a drainage board having a plurality of channels extending from a bottom side along a front face thereof, anda filter fabric attached to a rear face of the drainage board that covers the front face of the drainage board and includes a settling strip;wherein the settling strip includes at least a first segment, a second segment, and a third segment, andwherein the first segment, the second segment, and the third segment are substantially parallel in a first state. 17. The drainage system of claim 16, wherein the first segment, the second segment, and the third segment are substantially co-planar in a second state. 18. The drainage system of claim 16, wherein the settling strip is kept in the first state with a securement mechanism. 19. The drainage system of claim 18, wherein the securement mechanism does not hold the settling strip in place in a second state, when the first segment, the second segment, and the third segment are not substantially parallel. 20. The drainage system of claim 18, wherein the securement mechanism is a staple.