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Spirals can be ordered in four styles: The Smart Spiral, the Traditional Spiral, the Contemporary and the Charleston. In addition, the Smart Spiral lends itself to exterior applications for outside decks.

The Smart Spiral: The Smart Spiral is made of Southern Yellow Pine and features the patented wood Smart Spiral Handrail assembly (U.S. Patent No.5,535,557) and square center column. This spiral rail is called "smart" because it "figures out" its own shape as it is being installed. The Smart Spiral block style handrail provides an entirely new look and design for spiral stair handrails (a close-up photo of this rail is shown on the pricing page). It is priced less than traditional spiral rails and costs less to ship so the customer can save.

Balusters are attached to the outside of the Smart Spiral handrail and to the outside of the tread perimeter.

Exterior: Smart Spiral stairs can be made of pressure treated yellow pine and use all stainless steel hardware. Exterior kits do not include the top landing deck or horizontal rails since these can be constructed with commercially available deck lumber.

The Traditional Spiral: The Traditional Spiral kit is available in pine, Red Oak, or other wood species. It is supplied with a traditional solid wood spiral rail that is usually shipped in a single piece. The one-piece rail has a square cross-section about 1-5/8" thick and 1-3/4" high, to meet graspability requirements of national building codes.

The Traditional style comes with a square center column.

Balusters may be installed on the outside of the one-piece rail and outside the tread perimeters; or the same balusters may be cut and installed under the rail and on top of the treads.

The Contemporary Spiral: The Contemporary spiral stair features a wider one-piece handrail (1-5/8" thick by 4" high) and a round center column. This style is available in pine, red oak or other woods. You should consult your local building code to assure the wider rail will meet graspability requirements. Precision Pine has rail details for you to show your building inspector.

The Charleston: The Charleston comes with a one-piece rail and turned (decorative round) newel posts and balusters. The Charleston has a round center column and is usually ordered in red oak or other hardwoods.

Mix and Match Features: Some of the features of the four styles can be substituted with any one style as a custom order. For example, you can order the Smart or Traditional spirals with a round center column. You can order the Contemporary wide rail for the Traditional style. Or you can order turned balusters and newels for the Traditional style.

You can order a spiral with some features left out to reduce the price. For instance, you could order any style without the top landing rails or the top landing itself.

Custom Kits: Precision Pine offers wood spiral stairs that are built to the customer's specific orders. You can order a custom kit for any height or diameter as long as Precision Pine can assure it will fit in your floor plan. Custom spirals may turn less per tread. You can order large diameter spirals with lower rises between treads than standard kit spirals. Custom spirals may also include traditional turned (round, decorative) balusters and newel posts. Prices for custom kits are quoted on a case-by-case basis. Precision Pine can also design a spiral stair that flows into a straight stair.