Basement, Waterproofing, Underpinning & Groundworks specialist's 

Welcome to Delta Force Group.

At Delta Force Group, we are London’s trusted experts in basements, waterproofing, underpinning, foundations, and groundworks. With years of industry experience, we specialize in creating high-quality, bespoke solutions that transform properties and protect their value.

Our skilled team is dedicated to delivering excellence in every project, whether it’s constructing new basements, reinforcing foundations, or ensuring your space stays dry with advanced waterproofing systems.

We pride ourselves on offering reliable, professional services tailored to meet the unique needs of each client.

 

Transform Your Space with Custom-Built Basements

At Delta Force Group, we specialize in designing and construction of basements tailored to your needs. Whether you're looking to add extra living space, increase property value, or enhance your home's functionality, our expert team in London is here to bring your vision to life.  

Our Basement Services:

We offer a comprehensive range of basement construction services:  

1. Basements Under Property

Maximize your home's potential by adding a fully functional basement beneath your property. Perfect for extra bedrooms, home gyms, or entertainment spaces.  

2. New Build Basements

Building a new property? Let us design and construct a bespoke basement as part of your project, ensuring it meets your exact specifications.  

3. Basements Under Gardens

Extend your living space without disrupting your home’s structure by creating a basement under your garden. Ideal for studios, offices, or playrooms.  

4. Basement Waterproofing

Protect your basement from dampness and leaks with our advanced waterproofing solutions, ensuring a dry and safe environment year-round.  

5. Underpinning and Structural Repairs

Strengthen existing basements or prepare for deeper excavations with our expert underpinning and structural repair services.  

View Our Basement Types

Complete new basement dug out under house, in Ilford.

Underpinning, concrete floors, pumping system all complete. Finished of by waterproofing the walls and floor, completing a water tight basement shell.

Basement dug out at side of house, in Bromley.

Waterproofing completed to make a water tight shell.

A new side extension was built on top of the new water tight basement shell.

Digging out of basement under garden.

Forming of new walls and waterproofing to make the shell water tight.

Steel beams installed and block and beams placed on top, for an extension to be built on top. Up to the level of the original house.

Basement dug out under Mazahirul Uloom School.

Basement was extended from existing basement.

Basement was finished of by completing the waterproofing making the whole basement water tight.

Protect your basement from water damage with Delta Force Group

We offer reliable and long-lasting waterproofing solutions designed to safeguard your space from leaks, dampness, and moisture. Whether it’s a new build or an existing basement, our expert team is here to ensure a dry and healthy environment for your property.  

Why Waterproof Your Basement?

Waterproofing is essential for:  

- Preventing Damage:

Avoid costly repairs caused by water seepage, mold, or structural damage.  

- Protecting Your Investment: Ensure the longevity of your basement construction.  

- Creating Usable Space: Make your basement a safe, dry, and comfortable area for living or storage.  

Our Basement Waterproofing Services

1. Comprehensive Waterproofing Solutions.

From new constructions to existing basements, we apply cutting-edge methods to keep your basement dry and secure.  

2. Internal Waterproofing Systems

Install internal drainage channels and sump pumps to manage water ingress effectively.  

3. External Waterproofing Systems

Protect your basement from the outside with durable membranes and coatings that block water penetration.  

4. Damp Proofing and Condensation Control

Resolve issues with damp walls and condensation to ensure a healthy, moisture-free space.  

5. Sump Pump Installation and Repairs

Ensure proper water drainage with our sump pump services, including installation, maintenance, and repairs.  

Why Choose Delta Force Group?

- Specialists in Basement Waterproofing: Years of experience protecting basements across London.  

- Tailored Solutions: We design waterproofing systems based on your unique property needs.  

- High-Quality Materials: Using industry-leading products for superior results.  

- Guaranteed Satisfaction: Our work comes with a warranty for your peace of mind.  

Signs Your Basement Needs Waterproofing.

- Persistent damp patches or water pooling.  

- Musty odors or mold growth.  

- Cracks in walls or floors allowing water ingress.  

- High humidity or condensation buildup.  

Get a Free Assessment Today

Don’t wait for water damage to ruin your basement. Contact Delta Force Group for a free assessment and expert advice on the best waterproofing solutions for your home.  

View our Waterproofing project’s 

Waterproofing of new basement.

Tanking of floors and walls, and three new pumps installed. 

In New Basement in Ilford.

Installation of new pump system.

Foul pump also installed.

New delta menbrane put up on all the walls and floors

Installation of water pump and new menbrane after lowering off floor.

It was battened out and insulated and floor screeded.

Tanking and installation of pumps, for side basement extension for floors to be built on top.

In Beckenham.

Professional Underpinning Services in London.

Strengthen and stabilize your property with Delta Force Group's expert underpinning services. Whether you’re looking to reinforce existing foundations or prepare for a basement extension, our team has the expertise to deliver safe, reliable, and cost-effective underpinning solutions tailored to your needs.  

 

What is Underpinning?

Underpinning is the process of strengthening and deepening a building’s foundation. It is essential for:  

- Supporting additional structures like basements or extensions.  

- Addressing foundation issues caused by subsidence or ground movement.  

- Ensuring structural stability in older properties.  

Our Underpinning Services

1. Basement Underpinning

Enhance your basement’s structural integrity or prepare it for deeper excavations with our advanced underpinning techniques.  

2. Foundation Strengthening

Reinforce existing foundations to prevent settlement or cracking and ensure long-term stability.  

3. Subsidence Repairs

Address issues caused by soil shrinkage, poor drainage, or shifting ground to restore your property’s foundation.  

4. Customized Solutions

Each project is unique. We analyze your property’s specific needs and tailor our underpinning methods accordingly.  

Why Choose Delta Force Group?

- Experienced Professionals:

Decades of experience in underpinning and structural repairs across London.  

- Safe and Compliant:

All projects adhere to UK building regulations and safety standards.  

- Cutting-Edge Techniques:

Using modern tools and methods for precise and efficient results.  

- Cost-Effective Solutions:

We aim to deliver high-quality work within your budget.  

Signs Your Property May Need Underpinning

- Cracks in walls, floors, or ceilings.  

- Doors or windows that stick or don’t close properly.  

- Uneven or sinking floors.  

- Visible gaps between walls and floors.  

 

Our Process

1. Initial Assessment:

We conduct a thorough site inspection to determine the cause of foundation issues.  

2. Customized Plan:

Develop a tailored underpinning strategy based on your property’s needs.  

3. Execution:

Our skilled team carries out the work efficiently and safely.  

4. Final Checks:

Ensure the project meets all structural and regulatory standards.  

View out Underpinning project's 

The Underpinning under existing foundations of existing house.

Reinforcement and concrete installed down to the depth of 2.5 meters, dry packed and floor lowered to put in new concrete slab in Manchester.

The Underpinning of existing foundations, down to the depth of 1.2 meters and bricked up onto underpin to tie back onto the wall.

Crack stitching rebar carried out in Watford.

The Underpinning of bay window in liverpool.

Jacks inserted and concerted.

Our Groundworks Services

We offer a full range of groundwork solutions tailored to your project:

1. Site Preparation

Clearing and preparing your site for construction, including excavation, grading, and leveling to ensure a solid foundation.  

2. Foundations 

Expertly designed and installed foundations, including strip foundations, raft foundations, and piling, to suit your project’s requirements.  

3. Drainage Systems

Installation of robust drainage systems to prevent water buildup and ensure proper site management.  

4. Utility Connections

Safe and efficient installation of underground utility lines, including water, gas, and electrical connections.  

5. Retaining Walls and Landscaping

Construction of retaining walls and other structures to stabilize your site and create functional outdoor spaces.  

6. Concrete Works

High-quality concrete work, including slabs, footings, and reinforced structures, for long-lasting durability. 

Our Process

1. Initial Consultation:

Understanding your project’s scope and requirements.  

2. Site Survey:

Conducting a thorough site inspection and planning the groundwork.  

3. Execution:

Implementing our services with attention to detail and efficiency.  

4. Completion:

Ensuring your site is ready for the next phase of construction.  

Let Delta Force Group provide the groundwork for your next project. Whether it’s a small residential build or a large-scale development, we have the skills and resources to ensure success. 

 

 

View our Groundworks project's 

New retaining wall at ware house in Crystal Palace SE19 2UG.

Foundations dug out and poured, shuttered up and concreted.

A new light well dug out, reinforcement put in, shuttered up, concreted and poured, to form new light well, in Liverpool CH41 5LH.

Ground works Completed at Sun Mark Ltd New Ware House in Greenford UB6 8UH.

55,000 sq meters carried out.

Drainage, site prep, concrete, pad stones and all reinforcement done.