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Toilet Under Stairs
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. 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 Refurbishment Maida Vale W9
Flat Refurbishment Maida Vale W9

Sigma Construction UK carried out a complete flat refurbishmentof this run-down property situated in Maida Vale district of London W9. This UK property is located in a residential apartment block built in the 1960's. more info >

City of London Apartment Renovation EC1
City of London Apartment Renovation EC1

A deluxe penthouse refurbishment located in the City of London, with impressive views of London’s skyline and its surroundings. Our young, professional client wanted to achieve a fresher look to the penthouse, so part of our brief was to renovate the property and give it the fashionable appearance it was lacking. 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 >

St John's Wood Townhouse Renovation NW8
St John's Wood Townhouse Renovation NW8

The renovation of this four-bedroom, three-story house St John’s Wood was undertaken by Sigma, a construction company based in London, for an international investor. The project necessitated a complete overhaul of this London NW8 property. The client’s vision was of a contemporary, yet luxurious, look with high-quality finishes that would meet the requirements of guests visiting the UK more info >

Sigma Construction UK

Sigma Construction UK Sigma Construction UK
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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.       




  • Traditional Bathroom
  • Victorian Bathroom
  • Contemporary Bathroom
  • Wet Room / Walk in Shower
  • Moroccan Bathroom
  • Bathroom in the Basement      


There are three basic factors that we need to consider when designing a bathroom, comfort, easy of use, optimizing space – and it’s usually a question of balancing these to get best result.  


The first and most important thing is to discuss your needs and priorities, and once we’ve established these we can draw up a plan for the bathroom that you are happy with, whether designing from scratch or just replacing existing fittings.    


Bathroom Fitters


Of course, you’ll also need to think how to actually fill the space – for example     

  • Do I want a complete bathroom suite, or individual units?
  • What kind and colour bath, shower, sink, taps, or loo do I want?
  • What type of lighting?
  • What kind of tiles—ceramic, marble, stone, granite, hand-made glass, etc?
  • What type of bathroom cabinet and/or other furniture?
  • What kind of heating—under floor, towel rail, radiator, etc?


                     see - Bathroom Fitters


Before we start fitting your new bathroom, we’ll remove and dispose of the old one, and then prepare any new plumbing, wiring or plastering. 


Then, when it’s all prepared, we’ll create your new bathroom according to 3d design you are happy with. And finally, we'll tile and decorate to our usual high standards, leaving you with a bathroom you can’t wait to come home to. 



12 dos and don'ts of bathroom renovations

A well done bathroom renovation can completely transform a bathroom into something not only beautiful but also functional. That being said the process involves various stages in order to complete it correctly and with longevity. Bathroom renovations should only be done every couple of years if done correctly by your bathroom fitters, this involves carefully planning the process and hiring the correct tradesmen. Modern bathroom designs have become very popular and have almost become a trend in itself, some of the latest bathroom trends include a walk in shower, bold tile colors, brass sanitary ware electric underfloor heating and much more.  So what to do and what not to do during a bathroom renovation?

DO hire a builder along with a plumber for the process of your bathroom renovation. Plumbers are there to run the pipework, install fixtures and do the plumbing work involved with the bathroom design process as their trade name says, however, a builder will project manage the job and with their experience, the project will run a lot smoother and potentially save you unnecessary costly mistakes. A builders knowledge will help you avoid unnecessary mistakes. A bathroom refurbishment if done well can last you many years, therefore, it is crucial to have good bathroom fitters to help you along the way.

DO NOT cut corners on key materials. Whilst a lot of us are on a budget and it is good to be efficient, a common mistake is skimping out on items which get used the most meaning, in the long run, these will have to be replaced causing more hidden costs.  Cheap materials are more likely to scratch and decay. It is advised to use stainless steel materials where possible as these will last you a lot longer, making your bathroom renovation a lot more cost efficient.  

DO save on unnecessary luxury items such as toilets, bathtubs etc. as you don’t require to have motion activated lids on toilets or a porcelain bath but it is crucial to invest in other items.

DO take time to finalize the bathroom design and sanitary ware,  this follows on to the bathroom design and installation of all the products and materials, if correct items are chosen the first time you will not be left having to replace or re-install these in a short time allowing you to avoid unwanted costs.

DO select surfaces which are bathroom appropriate.  It is important to remember that bathroom tiles need to be non-slippery due to safety reason. The importance of the right and durable materials is key to a well designed and functional bathroom. Porcelain tile is a great choice as it’s much harder than ceramic tiles and is available in a vast choice of sizes, shapes, colour and patterns.  

DO choose tiles wisely. Designing a modern stylish bathroom often involves feature walls, alcoves and tile features, these also need to be suitable for those specific needs. Some textured stone tiles are not suitable for showers and can only be used on feature walls and therefore it is good to get advice on this prior to making any decisions and purchases.

DONT rush choosing your bathroom fitters. Should you decide to invest in more luxury items which mean a bigger price tag make sure you have trusted bathroom filters to handle these, for example fitting a bath which is of a valuable price, it is crucial this process is done with caution as this limit any potential damage and additional costs. Vanity countertop surfaces are just as important, popular options include quartz, granite, Corian and the more luxury option of marble. 

DO NOT buy products online without seeing them in person.  Online shopping is something we turn to all the time to save us time, however, whilst going online can be a great tool to research products and design ideas, it is strongly advisable to see finishes and products in person prior to buying them as they may appear different on your screen and in person.  This is especially relatable to finishes, a light grey quartz vanity top might look a completely different shade in real life to what you thought it did online.

DO  visit a showroom before you buy.  This procedure is highly advisable and also applicable to actual bathroom products and sanitary ware, often items get delivered straight to the building site and installers proceed with it you want to make sure that your new shower installation is exactly what you wanted but also of the quality that is durable. 

DO your research prior to visiting bathroom showrooms, with Google we are now able to research our postcodes and it is as simple as typing any of these into your browser, NW1 NW3 NW4 NW5 NW6 NW8 NW11, and it will provide you with a vast number of showrooms for you to visit. With bathroom renovations all over London Areas amongst some of which include West Hampstead, Kilburn, Queens Park, Golders Green, Hampstead Garden Suburb, Hendon, Camden Town, Gospel Oak, Belsize Park, Kentish Town, Tufnell Park, South Hampstead, Primrose Hill, Baker Street, well know showrooms such as Belsize bathrooms, Hugo Oliver London and monsoon bathrooms amongst many others will be able to help you during your bathroom renovation. 

DO add more storage. This is crucial as there never seems to be enough storage especially in family bathrooms where there are various members of the family using it. Within family bathrooms it is also wise if space allows it to fit in a double sink vanity, this gains a larger sink and vanity unit allowing more storage.

DONT forget to add good lighting. Lighting is a crucial part of every well-designed room in the house and this includes a bathroom. Adding ambient lighting along with ceiling task lights can completely transform your new 


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