Frequently Asked Questions

We provide comprehensive foundation and groundworks services including CFA piling, driven piling, screw piling, mini piling, site preparation, excavation, drainage systems (including SUDS), foundation construction, and complete groundworks packages for residential, commercial, and infrastructure projects.

We primarily serve North London including Islington, Camden, Hackney, Haringey, Barnet, Enfield, Waltham Forest, and Redbridge. We also work across Hertfordshire, Essex, and Greater London north of the Thames. Contact us to confirm coverage for your specific location.

Yes, we maintain comprehensive public liability insurance and employer liability insurance. Our team holds relevant CSCS cards and we work to NHBC and LABC standards. We are fully compliant with all UK building regulations and health & safety requirements.

Yes, we work on projects of all types and sizes including residential extensions, new builds, commercial developments, industrial facilities, and infrastructure projects. We have the equipment and expertise to handle both small domestic projects and large commercial contracts.

Yes, we provide free, no-obligation quotes for all our services. We can often provide initial cost estimates over the phone, and we offer free site assessments to give you accurate, detailed pricing.

We aim to respond to all enquiries within 24 hours on working days. For urgent projects or emergencies, we can often respond the same day. Contact us by phone for the fastest response.

Piling is a deep foundation technique where long, slender columns (piles) are driven or drilled into the ground to transfer building loads to stable soil or rock layers deep below the surface. This is necessary when surface soils are too weak to support the structure.

Piling is typically required when building on weak or unstable soils, for heavily loaded structures, in areas with high water tables, for deep basements, or when building regulations require it based on soil conditions. A site investigation will determine if piling is necessary for your project.

Project duration depends on the number of piles, depth required, site access, and piling method. A typical residential project might take 2-5 days, while larger commercial projects could take several weeks. We provide accurate timelines during the quotation stage.

The piling type depends on soil conditions, structural loads, site access, environmental constraints, and budget. Common options include CFA piling for most applications, driven piling for high loads, screw piling for speed and eco-friendliness, and mini piling for restricted access. Our engineers will recommend the most suitable option.

Noise levels vary by method. Driven piling creates the most noise and vibration. CFA piling is moderately noisy but generally acceptable in urban areas. Screw piling is the quietest option. We always work within local authority noise restrictions and can advise on the best approach for noise-sensitive locations.

CFA (Continuous Flight Auger) piling is a technique where a hollow-stem auger drills into the ground, then concrete is pumped through the auger as it's withdrawn, creating a continuous concrete pile. It's efficient, relatively quiet, and suitable for most soil conditions.

Pile depth varies greatly depending on soil conditions and structural requirements. Residential piles typically range from 3-12 meters, while commercial projects may require piles up to 30 meters or more. Depth is determined by soil investigation results and structural engineering calculations.

Excavated soil (spoil) is removed from site and disposed of responsibly at licensed facilities, or where possible, can be reused on site for landscaping or fill. We handle all waste disposal in compliance with environmental regulations and can provide waste transfer documentation.

Screw piling (also called helical piling) uses steel shafts with helical blades that are screwed into the ground like a large screw. They provide immediate load-bearing capacity without concrete, making them fast and environmentally friendly.

Screw piling is faster to install (often completed in days vs weeks), creates no spoil to remove, works in any weather, has immediate load capacity with no curing time, is quieter with less vibration, and can be removed and reused. However, it may not be suitable for very heavy loads or certain soil types.

Yes, screw piling is one of the most eco-friendly foundation methods. It creates minimal soil disturbance, produces no waste spoil, uses no concrete, generates low noise and vibration, and the piles can be removed and recycled if needed.

Yes, one advantage of screw piles is that they can be unscrewed and removed if needed, leaving minimal ground disturbance. This makes them ideal for temporary structures or projects where future site redevelopment is planned.

Screw piles are very fast to install - typically 10-30 minutes per pile depending on depth and soil conditions. A complete foundation for a residential extension might be installed in 1-2 days, with construction able to proceed immediately.

Screw piling works well in most soil conditions but performs best in cohesive soils, sands, and gravels. It may be less suitable in very dense rock, extremely soft soils, or soils with large obstructions. A site assessment will confirm suitability for your specific conditions.

Groundworks includes site clearance and preparation, excavation and earthmoving, foundation construction (strip, raft, trench fill), drainage installation (foul, surface, and SUDS systems), utility trenches and ducting, concrete slabs and substructures, retaining walls, and hard landscaping.

Duration depends on project size and complexity. A typical residential extension might take 1-2 weeks, a new house plot 3-6 weeks, and larger commercial developments several months. Weather and ground conditions can also affect timelines.

SUDS (Sustainable Urban Drainage Systems) manage rainwater naturally by mimicking natural drainage. They include permeable paving, swales, soakaways, and attenuation tanks. Many local authorities now require SUDS for new developments to reduce flood risk and improve water quality.

Foundation type depends on soil conditions, building load, water table, and budget. Options include strip foundations for stable soils, raft foundations for weaker soils or basements, trench fill for speed, and piled foundations for poor ground. A site investigation determines the most suitable type.

Yes, we work with specialist consultants to safely remediate contaminated land. This includes assessment, safe excavation and removal of contaminated material, and disposal at licensed facilities with full documentation and compliance with environmental regulations.

GPS-guided excavation uses satellite technology and machine-mounted sensors to achieve extremely precise levels and grades. This is especially useful for complex designs, large-scale earthworks, and ensuring accurate drainage falls, saving time and reducing errors.

Contact us by phone, email, or through our website contact form. Provide basic project details including location, project type, and approximate size. We'll arrange a free site visit to assess the work and provide a detailed written quotation.

We need the project address, type of work required, site plans or drawings if available, any soil investigation reports, expected timelines, and access information. During the site visit, we'll gather additional details to provide accurate pricing.

Payment terms are agreed in the contract and typically involve a deposit to secure the booking, stage payments as work progresses, and final payment on completion. We're flexible and can discuss payment structures that suit your project and cash flow.

During a site assessment, we inspect ground conditions, evaluate access for equipment, identify potential challenges, take measurements, review any existing documentation, discuss your requirements, and gather information needed to prepare an accurate quote and work schedule.

We maintain rigorous health and safety standards including risk assessments for every project, method statements, toolbox talks, CSCS-qualified operatives, regular equipment maintenance, proper PPE, site safety barriers and signage, and full compliance with CDM regulations.