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Bathroom Fitters and Designers
Bathroom Fitters and Designers

If you want to redesign your bathroom, you will always need a good plan and professional bathroom fitters - and we've designed and fitted all kinds of bathrooms. more info >

Maroccan Bathroom
Maroccan Bathroom

Our bathroom fitters relish the challenge of working with imaginative designs: this gives us a great opportunity to employ all our tiling, carpentry and decorating skills. more info >

House Refurbishment Hampstead NW3
House Refurbishment Hampstead  NW3

This Hampstead loft apartment refurbishment completed by Sigma Construction UK was a conversion of a loft space within a single family dwelling. Prior to the conversion, the attic space consisted of a series run-down of rooms with a very dark and steep access via a private secondary staircase, making it impractical and visually unappealing. more info >

Flat Renovation Hackney E8
Flat Renovation Hackney E8

Sigma Construction UK was appointed to renovate and add a contemporary feel to this two-bedroom flat, within a three storey maisonette bought by a couple of professionals. Built at the beginning of the twentieth century, the property is located in the fashionable district of Hackney, London E8. more info >

Painting Services
Painting Services

We offer full range of painting and decorating services from repainting a single room to renovating an entire house. A newly decorated home will cheer you up, brighten your life and make you feel happy and positive. more info >

Wet Room Installation
Wet Room Installation

A wetroom is the new choice for bathroom upgrades! If you are considering converting a bathroom or other room in your house into a wet room, the friendly and experienced Sigma team will be happy to work with you to plan an efficient use of the space. more info >

Sigma Construction UK

Sigma Construction UK Sigma Construction UK
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Toilet Under Stairs 

If you are considering converting a vacant cupboard under the stairs into a toilet, a friendly and experienced team will be happy to work with you to plan an efficient use of the space   



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Plan and Maximise Space 

If your under stair cupboard is littered with electrical cables, or contains a gas meter or fuse box, you might want to move them to the far bottom end of the cupboard, or even just hide all the clutter by boxing it.


If your cupboard is divided by a partition wall, or has two small doors, one solution would be to remove the old structure, erect a new side wall with new wider doors that are hinged to open out into the hall, and then plasterboard the underside of the stairs and the all the inside area. The panelling on the side of the stairs should match the colour(s) of the doors.  


The side wall would be made from wood or plasterboard, and painted or varnished to blend with the balustrade and corridor walls. These changes would allow for a wider, custom-made door to be fitted to the loo. 


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Any loo must be connected to the soil pipe. Unless the soil pipe can be conveniently accessed from the cupboard, we would need to fit a macerator pump for the toilet to liquefy the waste, which is then pumped through a small pipe to the soil stack. Fitting the water supply may require floorboards in the hall to be lifted and new pipes installed.



To keep the under stairs toilet extra warm, and towels dry, you might consider fitting a heated towel rail. It should be wall mounted to keep the floor clear, and extra space should be left around it to avoid potentially painful burns. If the central heating pipes are too far from the toilet it is possible to also install a small electric heater.


Sound Insulation

Enhance privacy by insulating new or existing walls. Installing a 52mm panel consisting of an outer layer of acoustic plasterboard and an inner layer of acoustic mineral wool that is made to be glued to the wall is enough to dampen everyday sounds. For further soundproofing, acoustic mineral wool can be put under the floorboards and in the ceiling.



Fitting attractive lighting is a nice touch, either wall mounted above the basin, or a spotlight set into the ceiling. The light could be operated either by a string pull inside the toilet, or a light switch outside it. 



According to building regulations, all domestic toilets need to have adequate ventilation. If there is no window, an extractor will need to be fitted: these are usually made to work when the light is switched on, and then switch automatically off five minutes after the light is switched off. Existing windows will probably be single glazed, so you could benefit by replacing them with modern, double-glazed ones.



It's usually best to avoid dark colors as they can make space a little dull; neutral colors such as off-white, stone or cappuccino give a sophisticated finish. Decorate walls and ceiling in the same shade, or for an easy clean option use tiles. Running the same flooring from the hall into the loo will give a greater sense of space. 


If you are planning to install a toilet under the stairs then please give us a call for expert advice.  

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