Our Services

Complete Basement, Waterproofing & Structural Groundwork Specialists in London

Delta Force Group Ltd offers a full range of structural and waterproofing services for basements, foundations, and below-ground works. With over 15 years of experience, we deliver high-quality, compliant solutions across residential and commercial projects throughout London.

🔨 Basement Construction

We build basements from the ground up — including excavation, underpinning, reinforced concrete structures, waterproofing, and backfill. Whether under your home, garden, or a new build, we deliver the full shell ready for fit-out.

đź’§ Basement Waterproofing

Our team installs comprehensive waterproofing systems using tanking, membranes, sump pumps, drainage channels, and resin injection. We offer Type A, B, and C systems, fully compliant with BS 8102:2022.

🧱 Underpinning & Structural Repairs

We stabilise and strengthen existing foundations using traditional mass concrete underpinning, beam-and-base, or piled systems. We also carry out crack stitching, lintel replacements, and structural reinforcements.

🏗 Groundworks & Foundations

From site clearance to piling, slab laying, and drainage, we deliver all supporting groundwork for domestic and commercial developments — safely and to spec.

🔄 Sump Pump Installation & Repairs

We install and maintain sump pump systems with alarms and battery backups. Emergency repairs and system upgrades are also available 7 days a week.

🧰 Waterproofing for New Builds

We work with developers and architects on waterproofing for new basements and below-ground structures — using pre-applied membranes, waterproof concrete, and integrated drainage solutions.

âś… Why Choose Delta Force Group?

  • Over 15 years of basement & structural experience

  • Fully insured and health & safety compliant

  • Work backed by guarantees and warranties

  • Free site surveys and clear, fixed quotes

  • Trusted across London by homeowners and contractors

Book a Free Basement Survey Today

Looking for expert basement construction, waterproofing, underpinning, or groundworks in London? Delta Force Basements deliver reliable, high-quality results to a waterproof shell – ready for fit-out.

Contact us now:
Delta Force Basements
Tel: 020 8092 0756
Mobile: 07405 046475
Email: groundworkcontractors@hotmail.com
Opening Hours: Mon–Fri 08:30–18:00, Sat–Sun 09:00–14:00

We provide free surveys across Greater London. Get in touch today and let’s start your project.

What type of services do you provide?

We specialise in basement construction, waterproofing, underpinning, and all groundworks. Our projects range from full new build basements and under-garden basements to smaller foundation repairs and sump pump installations.

Do you only work on basements?

No. While basements and waterproofing are our main focus, we also provide underpinning, foundations, structural repairs, and drainage works. This means we can manage both new construction projects and remedial repairs.

Are your works guaranteed?

Yes. All our waterproofing systems are installed in line with BS 8102:2022 standards and are covered by a long-term guarantee. Structural works such as underpinning and foundations are carried out to the engineer’s specifications and fully insured.

WE ARE ALSO PROUD TO BE FULLY INSURED INSTALLERS OF DELTA.

 

Do you cover all of London?

Yes. We operate across Greater London and the surrounding areas. We regularly work in Central, West, South West, and North London, and can provide free surveys within these areas.

Contact Delta Force Group today.

Get in touch with our expert team for a free consultation and quote. We operate across London and guarantee professional service, exceptional workmanship, and long-lasting results in every basement project.