Based in Hampshire – Operating Across the South and Nationally

Ground
investigation
Precise. Efficient.

Strata Geotech is a specialist ground investigation contractor working across the south of England and nationwide. Primary focus is Window sample drilling — delivered rapidly, precisely, and to a high standard. We work with our partner company to deliver all forms of ground investigations — a complete package.

Portsmouth · Coastal redevelopmentBH-12 · Window sampling, 8.0 m
Standards & capacity

Rigorous fieldwork.
Clean data.

10M+
Sampling depth capacity
24 – 48HRS
Typical mobilisation
BS 5930:2015
Logging to standard
£5M
Public liability cover
In progress Drilling rods extending vertically into a clear blue sky during a deep sampling run.
Primary Focus

Window Sample
Drilling

Fast, accurate

Strata Geotech delivers fast, accurate window sample drilling for ground investigations, contamination assessments, and geotechnical design. We have recently acquired a new Archway Competitor rig that combines low-impact and remote access with the depth and testing capability reliably — giving consultants and contractors a single, reliable solution from site mobilisation through to logged samples and reporting.

About Window Sampling
Operator logging recovered chalk samples on a tablet beside the window sample rig.
Capabilities

What we do.

A focused service line, executed to a high standard. We work for engineers, landowners, developers and architects as well as specialist subcontractors to multidisciplinary consultancies.

The Rig
  • Brand-new Archway Competitor lightweight tracked rig with calibrated hammer and current PUWER certification.
  • Minimum tracked width of just 600 mm for through-gateway and side-return access, with 30 m hose reach for restricted or stand-off locations.
  • Mast can be operated fully remotely with diesel or electric hydraulic pump for the most restricted areas. Min access width 450 mm untracked.
Depth & Capability
  • Windowless sampling to 10 m BGL
  • DPSH to 10 m BGL
  • Casing to 10 m BGL
  • Hand-dug starter pits where service clearance demands it
  • Greater than 10 m available on request
In-Situ Testing
  • Standard Penetration Test (SPT)
  • Cone Penetration Test (CPT)
  • Dynamic Probing Super Heavy (DPSH)
  • U4t (U100) and U70 samples for high-quality, undisturbed samples for accurate laboratory geotechnical testing
  • Hand Shear Vane (HSV) on cohesive samples
  • All available from the same setup, reducing return visits and keeping programmes tight.
Logging & Reporting
  • Drillers logs supplied as standard via Drillit Logs
  • AGS format data standard
  • Photographic log of arisings
  • Full logging to BS 5930 standards available on request
  • Samples prepared for onward laboratory analysis
  • Lab testing with established UKAS-accredited UK testing laboratories such as Chemtech, GSTL, I2 Analytical
  • Custom service to suit client's specific needs
Installations & Monitoring
  • Standpipes for gas and groundwater monitoring fitted on completion
  • Spec. of installs and backfill as required
  • Follow-up monitoring visits available
Crewing & Compliance
  • One or two-man crews to suit the job
  • £5m Public Liability as standard (higher limits on request)
  • CHAS accredited
  • EUSR Cat 1 & 2 qualified operatives
  • Calibrated CAT & Genny on every job
Other Ground Investigation Services

We work closely with our partner company Thameside Groundworks Site Investigation and Civils to deliver all forms of ground investigation a client may require — with one point of contact.

All Services
In the field

Real sites.
Real samples.

Two Strata Geotech operators setting up the window sample rig at a commercial site. Set-up
Recovered window samples — chalk cuttings and liner tubes — laid out on a tarp for description. Samples
Strata Geotech team on a coastal construction site — Portsmouth Spinnaker Tower visible in the background. Portsmouth
Operator reviewing field data on a tablet next to the drilling rig in a green wooded setting. Domestic
Get in touch

Tell us about your site.

Quotations turned around within one working day. For anything time-critical, phone the office — we answer.

Address

Fermoy Farm, Farnham Road
Odiham, Hampshire, RG29 1HS

Response within one working day
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