What is helicoidal staircase?

Helical staircases are fabricated to have the appearance of a curve or helix. This curved structure leads you from one level to the next by way of a flowing circular rotation. Because of its unique shape and rising characteristic, this type of staircase is ideal for retail, showrooms and atriums of public spaces.

What is the rough opening for a spiral staircase?

44 inches x 44 inches

3’6” translates to 42 total inches in diameter and therefore the MINIMUM opening size that you need MUST be 44 inches x 44 inches (44”x44”). You need at least 44”x44” opening because you’ll need two extra inches for your fingers to travel along the handrail as you walk up and down the stairs.

Is spiral staircase good for home?

04. A spiral staircase adds value to your house. 05. They are proven to be the best secondary stair option.

How long does it take to install spiral staircase?

Assembling a spiral staircase can be a simple do-it-yourself afternoon project for the average homeowner. On average, it takes two people half a day to assemble a spiral stair kit.

What is the difference between spiral and helical staircase?

The main difference between the two styles of stairs is to do with the central column, spiral staircases have a central column whereas helical staircases can be more modified in their shape as they don’t need a central column making them a much more popular choice for those wanting a completely bespoke design.

What is difference between spiral and helical?

The key difference between the two different shapes is that a spiral staircase has a centre column supporting the treads whereas a helical staircase has a void in the middle – it has no central column.

What are spiral stairs called?

Winders. Winders are steps that are narrower on one side than the other. They are used to change the direction of the stairs without landings. A series of winders form a circular or spiral stairway. When three steps are used to turn a 90° corner, the middle step is called a kite winder as a kite-shaped quadrilateral.

How are spiral staircases supported?

The primary support for a spiral staircase is a pole in the center around which the stair treads spiral. The pole is anchored at the bottom via a bracket bolted to the floor; the top of the pole is free-standing. The stair treads are attached to the pole at their inner edges.

Can you change a spiral staircase?

Replacing spiral staircase is possible if there’s enough space to put a straight one in.

Do spiral staircases meet building regulations?

All building regulation spirals must comply with the 100mm sphere rule, i.e there must be no gaps greater than 99mm anywhere on the spiral staircase.

Do spiral staircases need landings?

The landing is normally made of materials to match the tread material, including wood overlays. Landing are required when a staircase is installed through a hole in the floor. Landings are not required if the staircase is attached to the corner of a balcony face application.

How do you close a spiral staircase?

Opt for a fabric stair barrier to block the staircase for a softer aesthetic. This is also a fantastic option if your spiral staircase has an abnormally-sized or angled opening. The gate retracts back on itself when you open it, so there’s no worry about tripping over the fabric.

How narrow can a spiral staircase be?

Generally speaking, a stair with a diameter of 5′ or larger is going to be very comfortable for your application. Spiral stair building code requires your stair to have at least a 5′ diameter.

Does a spiral staircase save space?

The main reason spiral stairs were invented was to save floor space. Spiral Staircases do take up less space than conventional staircases. This is because the steps are all located within the diameter of the spiral, regardless of the height.

How high can a spiral staircase be?


Keep in mind the straight stair riser height and spiral stair risers height is different. Most straight stairs have a typical riser height between 7” – 7.5” whereas spiral stair riser height has a maximum riser height of 9.5”.

How much does a spiral staircase cost?


Diameter Price
4 ½’ $1,020.00
5′ $1,125.00
5 ½’ $1,265.00
6′ $ 1,400.00

Are spiral stairs safe?

To sum up, spiral staircases are perfectly safe providing they are built to conform with the regulations, and they are used with care and attention.

Can you have a spiral staircase to a loft conversion?

Spiral staircases – spiral staircases are often statement pieces which can add a mystical charm to a new loft space and make a feature of the room. Ups: spiral staircases can often fit into existing landings with the minimum of impact to the floor below the loft.