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.

💧 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 basement and below-ground structures — using pre-applied membranes, waterproof concrete, and integrated drainage solutions.

✅ 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