How To Fit A Staircase Properly

How To Fit A Staircase

Staircases are statement pieces that tell you a lot about the house owners. A staircase at the entrance of your house can be the focal point of the home’s interior design and a real attention grabber to the guests.

Installing or fitting a staircase is not a single-person job. It takes 2 to 3 persons to install a staircase properly to the space. In this article, we’ll discuss some basics of how to fit a staircase. 

How To Fit a Staircase


Installing a staircase is a relatively slow process and a struggle. It’s a two-person job, and especially if you need winder flights of stairs, having some timber measured 3×2 or 4×2 should come in handy. Some steps and scaffold planks are convenient too. 

Before Installation


Installation Staircase

Here are some things to consider before installing a staircase:

Crucial Measurements


The measurement must be accurate. On arrival to the site where you want to fit the staircase, measure floor to floor and the staircase height. Then measure each tread’s rise and multiply it by the number of treads. Sometimes you’ll need to hold a spirit level to measure down from or level a line around the stairwell wall.

Checking the Delivery


Even if the height of the stairs is in the paperwork, double-check that the measurements match. If the stair heights don’t match the floor-to-floor size, the staircase will not be precise.



You need to store some integral stair components in pristine, airy conditions and away from moisture and sun rays. Keep the long items lying on bearers. If you need a replacement staircase, the company usually sends the substitute staircase a few days before installation to let them get conditioned.

If the company has sent more than one stair part and isn’t labelled, store them separately after marking each item to identify them quickly. Be careful not to mix any stair part when installing the staircase as each stair suits a particular stairwell structure.

When storing the stair parts, try not to overload the structure by piling too many pieces together. On the upper floors, keep the parts near the walls on which the floor beams are, rather than in the middle of the rooms.

Installing the Staircase


Installing the Staircase

Here is the step-by-step process of staircase fitting:

Installation Process 


Start from the top when installing a staircase and work your way down. You will need to install wall strings, newels, and landings with the supporting structure. You may need to practice some cuttings and trimmings before installation to resize the parts you will need for the later process. 

Also, you should assess which type of bolts and screws you will use to ensure a proper level of support and that they are fit for wood, brick or any other material the staircase is being fixed to.

You should equip all fixing ends with clearance gaps that secure the piece and pilot holes that connect the structure. Handle the screws with care to safeguard the tender birdsmouth joint that you’ve carved into the string of the wall. Never push a screw into any type of material as it can cause the breaking of wood and weaken the joint.

Working at Height


Be careful when installing a stair as it has a risk of falling.

You can’t guarantee the complete protection of the outside stairwell until the balustrades and handrails have been completely fixed in their places.

Take caution before building temporary supports, such as brick blocks at the bottom of the staircase to prevent accidents. Also, beware of placing temporary proppings before loading anything onto the stairs. There will be no guarding now as you haven’t installed the staircase yet. So the installer should be careful of any risks related to falling from the stairs.

Before using a staircase to access different storeys, you should install the trunk to make the stairs capable of supporting the heavy loadings. Protect any edges with a falling risk with provided guarding, handrail, or temporary fencing.

Temporary screwing of stairs


A staircase will not function until you install it completely with all the screws. Parts of the stairs can become dislocated, for example, a newel can slip over a trimmer, or a missing anchor could cause the loading to fail.

It may be necessary for the installer to use the stair during the installation process, but this. 


Full-stringer Staircases

The finished staircase’s size can be up to 40mm less than the sizes measured on-site, and you should complete any fixing points before installing. The finished staircase size shouldn’t be equal to the measured length, as it will not help while installing the staircase and may not let you fit parts of the stairs into position. You should also consider any last-minute finishes that you are yet to apply to the staircase walls, such as dry lining or plastering.

Read this blog to know more about residential staircase designs:  Best Staircase Designs For Homes

To Conclude


Now you know how to fit a staircase properly. I hope you can take this learning and start fitting a new staircase. Let us know if this article benefited you.

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About ovom

Ovoms is a fully equipped and bespoke staircase design and installation company based in London.

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