Basement Waterproofing
BNS Groundword Contractors

DELTA Basement Waterproofing

DELTA basement waterproofing is performed to prevent water from penetrating your basement from the outside. There are different methods and materials that can be used to carry out this process. If the basement is underground sealant materials, drain installation and the use of sump pumps can be involved. 

If you have a basement that you wish to utilise as additional living space, building codes specify that it needs to be waterproofed. Waterproofing is especially important if groundwater in the soil outside your basement has the tendency to build up, or if you have a high water table. Failure to waterproof your basement is likely to result in mould, decay, water damage and major structural damage to your building. Contact us today and we can advise you on all the options you have and which techniques will best suit your needs.

BNS Groundwork London
5.0
Based on 19 reviews
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Shona LauderShona Lauder
12:19 02 Feb 24
Highly recommended. This company has excellent knowledge and efficiently carried out ground works.
RyuRyu
12:24 12 Jan 24
The groundwork contractors from this company exceeded our expectations. Their expertise and attention detail in laying the foundation for our project were remarkable.
Courtney HelenaCourtney Helena
12:25 09 Jan 24
This groundwork contractors near me proved to be a valuable partner. Their precision and commitment to timelines make our project a smooth experience.
Callum ThorneCallum Thorne
13:09 04 Jan 24
We are delighted with the results of the groundworks contractors' services in our property. Their professionalism and commitment to quality was evident in every step of the construction process.
Evie CummingsEvie Cummings
13:01 07 Dec 23
The professionalism of this company's groundwork contractors was evident from the start. The precision in earthmoving and grading laid the groundwork for a smooth and successful construction process.
Topaz WilliamsTopaz Williams
13:42 01 Dec 23
The company is a guarantee of success in basement construction. Every element was made with attention to detail. It was the best investment we could have made!
Suraj NathwaniSuraj Nathwani
12:24 03 Nov 23
Highly Recommended! Top quality Services! They Built me a spacious and comfortable basement that meets all my expectations.
Dorota BrodaDorota Broda
18:48 23 Oct 23
BNS Groundwork London is a 5/5 star construction company. They did an outstanding job on our basement project. Professional, skilled, and exceeded our expectations. Highly satisfied!
Monika KalinowskaMonika Kalinowska
18:48 23 Oct 23
BNS Groundwork London deserves a solid 5/5 stars! Their work on our basement was impeccable. Professional, efficient, and exceeded our expectations. Highly recommend their construction services!
London BasementLondon Basement
09:39 23 Oct 23
This company recently completed large basement project for us. I have to say that they are friendly and easy to work with. Bart, company PM is reliable and competent. Basement works completed in high standard, site well managed, clean, organised.
Jenna LaneJenna Lane
08:22 23 Oct 23
Their service is of high quality and also tailored to the individual client's needs. The team was knowledgeable and focused on achieving an excellent result. The basement is not only•functional but also aesthetically pleasing.
Zunaib AliZunaib Ali
10:48 16 Oct 23
I couldn't be happier with the company's work on my basement build I commissioned last year. The basement is spacious, well lit and perfectly designed. I would highly recommend.
Monika BrogowskaMonika Brogowska
12:12 05 Oct 23
BNS Groundwork London is a star construction company! Their work is impeccable and they completed our project on time. Impressed!
Allan lammymanAllan lammyman
22:17 25 Sep 23
Working with this team is like finding a £20 note in an old jacket: an unexpected delight! They lay foundations like Picasso painted canvases.Bravo!
BobbiBobbi
22:15 25 Sep 23
Five Stars! If they were a superhero, they’d Be Captain Concrete. Smooth, solid, and always saving the day. Here’s to many more projects that don’t ‘crack’ under pressure!
Olivia ManningOlivia Manning
22:29 18 Sep 23
The basement built by this company is absolutely fantastic! I highly recommend their services.
Malakey MMalakey M
22:43 12 Sep 23
Choosing this company for my basementwas the best decision. Their professionalteam delivered a spacious basement thatperfectly fulfills my needs. Highlyrecommended!
fatiha mountazihfatiha mountazih
16:56 29 Aug 23
This company is one of the best choices I could have made when building my basement. Their professionalism and excellent workmanship are truly remarkable. Throughout the whole process of working together, I felt I was in good hands. The team was very knowledgeable and took care of every detail. I would recommend this company to anyone looking for an excellent basement
Arianne Lei BautistaArianne Lei Bautista
14:52 14 Aug 23
A complete professionalism! Their knowledge and skills are extraordinary. Throughout the entire process of building the basement. I felt confident knowing that I was dealing with true professionals. Their teamwork with dedication and attention to the smallest details resulting in great end result.
Jacob HandymanJacob Handyman
16:41 01 Aug 23
Their team not only approached the construction of the basement professionally, but also with great commitment. The end result is simply amazing! The basement not only meets my expectations in terms of functionality, but also looks simply gorgeous. It really is the perfect place for me to spend time with family and friends. I cannot recommend them enough!
amal aoufyamal aoufy
10:39 21 Jul 23
They did an amazing job for me in building the basement. FromThe start to finish,their approach to the project was full of commitment and professionalism.
Rouhfthe TeresitaRouhfthe Teresita
16:17 16 Jul 23
It was the best decision choosing this company to build my basement. Thanks to this professional team, I have a spacious basement that meets all my needs. I highly recommend their services!
Debra HuntDebra Hunt
14:30 28 Mar 23
I had a great experience working with this groundworks company in London. They were prompt, reliable, and the quality of their work was exceptional. I would definitely recommend them to anyone looking for a trustworthy and efficient groundworks company.
Elatserge SergeElatserge Serge
20:05 24 Mar 23
I am extremely impressed with the quality of work that was done by the groundworks team. The job was completed to a high standard and the communication throughout the project was excellent. Highly recommended for any groundworks project in London.
Daniel HenryDaniel Henry
13:25 25 Feb 23
We hired a groundworks contractor to install a new septic system on our property, and we were very happy with their work. They were very professional and knowledgeable, and they kept us updated throughout the entire process. The team was always on time and worked efficiently to complete the job as quickly as possible. The finished septic system works perfectly, and we would definitely use this contractor again for any future groundworks needs.
Charles WatsonCharles Watson
15:32 22 Feb 23
I recently used a groundworks contractor for a landscaping project and was really impressed with the quality of their work. They were very communicative throughout the entire process and were able to produce exactly what I wanted. The team was always on time, efficient, and professional, and they left the job site clean and tidy at the end of each day. I would definitely use them again for any future projects.
Mekhi BurnsMekhi Burns
15:36 31 Jan 23
I have nothing but praise for this company. They have excellent customer service, and great equipment, they work really hard, and do work of the highest quality. I’m absolutely satisfied, and will definitely be working with them again if the need arises- although they’ve done such good work I don’t think there will be any need.
Lasfeen QuainLasfeen Quain
13:32 31 Jan 23
I got a really reasonable quote from this company, considering how much work it takes to get a property ready for building on. They took care of everything, from the electrics, water, and gas to the foundations and landscaping. They showed their experience and capability and worked diligently to get everything done as quickly as possible. Thanks to the whole team for all the work they did, I’ll definitely be recommending them to anyone who could use their services.
David RossDavid Ross
10:33 26 Jan 23
Very kind people, quick response to my message. The price they gave me was the best out of 4 others.
Russell MorrisRussell Morris
18:15 24 Jan 23
I have nothing but praise for this company. They have excellent customer service, and great equipment, they work really hard, and do work of the highest quality. I’m absolutely satisfied, and will definitely be working with them again if the need arises- although they’ve done such good work I don’t think there will be any need.
ArkadiuszArkadiusz
16:00 17 Jan 23
BNS did a groundwork construction for my house project last year. They did a great job, it was quick and clean, the team estimated and showed me all the prices in a very professional way, they also kept watch on a budget and helped me make it to the point even though the costs rose a lot. For any groundworks or basement things I recommend them highly 🙂
Jakob MJakob M
13:20 07 Dec 21
I used tis company in the past and will use them again for my up coming project , highly recommend them to all developers.Easy to work with, great knowledge, amazing communication with structural engineers and architects and skills that provide high quality finish.
Juan DerfalJuan Derfal
11:47 11 Nov 21
As a property developer I need groundwork in London quite often, and I always use these groundworks contractors. As well as being well priced, they are reliable, hard working, and have industry leading standards. Highly recommended.
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Defending Against Moisture: The Barrier Waterproofing System

The traditional method of waterproofing basements in the UK is the Barrier Protection Method also known as Type A and referred to as Tanking. This method protects the basement against water penetration by applying a waterproof material to the outer walls and floor slabs. This material forms a barrier between the basement and any groundwater that is present. Waterproof layers can also be added to the internal surfaces of the walls and floor in order to provide a double layer of protection.

Strength in Protection: The Structurally Integral Waterproofing System

In Structurally Integral waterproofing also known as type B. A structure is used to prevent water penetration. This method relies upon materials incorporated into the external shell of the structure. Structures used in this type of waterproofing protection are constructed from water-resistant concrete or structural steel. For this method to be successful the design of the structure and the materials used are very important as is the quality of workmanship when the structure is installed.

Channeling Excellence: The Drained Waterproof System

With the development of various methods and materials, the Drained Protection Method is most commonly used today. Also known as type C, The method protects against water penetration through the installation of an internal water management system. The groundwater is allowed to penetrate into the basement through an external wall or the floor as far as the cavity between the outer shell of the water management system. It is collected by a cavity drain membrane and then directed into controlled drainage and disposed of.

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