Model # K21004

Internet #202026734

Arke Eureka 55 in. White Spiral Staircase Kit


Eureka 55 in. White Spiral Staircase Kit

$246187 /each
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Product Overview

The Eureka 55 in. Dia spiral staircase kit is made of steel and powder-coated in hi-gloss white. This stair undergoes two processes for protection in the exterior applications. First an electrostatic galvanization process is used for the base protection, followed by a second application of the powder-coat paint application. The staircase can be easily installed by the homeowner in a single day using common household tools.

  • Adjustable in height from 99-3/16 in. to 120-1/16 in.
  • Height can be lowered to a minimum of 82-11/16 in. and to a maximum of 148-1/16 in. by adding additional accessories (purchased separately, model K00000, K21013)
  • All in-one complete kit – includes: 12 hi-gloss white steel treads with gray ABS covers, 1 landing, center pole, round spindles, 26-ft flexible gray extruded PVC handrail, landing rail (connected to center pole), connectors and stainless steel hardware
  • 4 spindles per tread
  • Rise adjustable from 8-9/32 in. to 9-1/4 in.
  • Clockwise or counterclockwise, exterior/interior installation, designed for use in square, round or mezzanine applications - not recommended for coastal applications
  • Finished opening must be 2 in. larger than the stair diameter
  • Each eureka stair kit is shipped with detailed assembly instructions and a DVD, toll-free support is available (888) 782-4758
  • Kit has not been designed to meet the international residential building code, as it relates to spiral staircases
  • Consult your local building department for any questions and specifics regarding compliance with the local building codes prior to purchase
  • Important: consult your local building inspector for specifics regarding compliance with the local building codes

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Hardware Included
Package Contents
All-in-one complete unit: 12 Treads, 1 landing, balusters, handrail, hardware and accessories included, nothing to paint, weld or stain. Tread cover adhesive for exterior installation not included.
Product Weight (lb.)
Stair Part Type

Warranty / Certifications

Manufacturer Warranty
1-Year for manufacturing defects

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Customer Questions & Answers

What glue should be used to glue tread covers down to treads?

I used the silicone suggested and it dissolved in a rain storm and is running out from under the tread covers like milk. The tread covers are coming loose as well. Was the silicone I used to old? Did it breakdown due to age of product or is there a special silicone product that should be used?
Asked by: Steve
There are many types of silicone adhesives available in the market so we are uncertain exactly which type was used. Some silicone adhesives are designed for interior usage and others are designed for exterior usage and can withstand the environmental elements. We recommend the use of a silicone adhesive that specifically states for usage on "Gutters and Flashing". This adhesive is designed to adhere to metal and PVC both and has proven to be very effective. We recommend that the tread covers be attached using the noted type of adhesive and then a heavy weighted object such as a brick paver be placed on the stair tread cover to promote a firm contact and be left for at least 12 - 24 hours. This should ensure the adhesive attaches securely. It is also advantageous to lightly sand the bottom side of the PVC tread cover before applying the silicone adhesive as this provides for an extra "bite" of the adhesive to the PVC cover. You might wish to consult with the customer service department of the company that produced the adhesive to inquire as to the reason the silicone adhesive failed in the rain as you describe.
Answered by: Arke Product Support Team
Date published: 2015-09-20
  • y_2017, m_8, d_17, h_22CST
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Customer Reviews

Eureka 55 in. White Spiral Staircase Kit is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from This staircase is great! It was super cost efficient and certainly does the job. The only think... This staircase is great! It was super cost efficient and certainly does the job. The only think I will put out there is that it is not one solid piece. This means that you fell a very slight give in the handrail are you work your way up or down the stairs. This is not an issue for safety or wear but worth mentioning if you think you are getting one solid piece of steel. It seemed easy enough for our guy to install even though he had never done one before and they give you a ton of extra pieces in case you opt to buy additional steps.
Date published: 2017-08-01
Rated 5 out of 5 by from We installed this staircase 3 months ago in the interior of a 150 yr old building. It took my hus... We installed this staircase 3 months ago in the interior of a 150 yr old building. It took my husband and me about 4 days. The manual was helpful in identifying pieces and parts but was very lacking in the installation. Thankfully, we found a step by step install of the Eureka on youtube. We are delighted with the finished product but encountered one problem. The top triangular landing tread does not fit the area once everything is installed. It's askew unlike the perfect fit on youtube. Nothing has been in place since the installation which is unsafe. I just don't know how best to cut that piece to fit and have it look as nice as the rest. Please advise. Thank you.
Date published: 2016-11-19
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