Commercial and Domestic boreholes drilling services
for geothermal heat systems, water wells and more...
GSI are specialists in drilling geothermal boreholes for ground source heating systems (GSHS) and water wells across the UK and Channel Islands. either for domestic or commercial projects.
From a single borehole in your back garden to some of the largest Ground Source Heating (GSH) projects in the country, each has had its own unique challenges and individual customer needs.
That's why the Gretton Site Investigations' team will approach your project with a wealth of experience and know-how.
We've developed a reputation for reliability, honesty and building customer relationships that last. Trusted by Bowcliffe Hall near York, where we drilled an incredible 72 boreholes, each 140 metres deep.
And a well known country-wide retirement home developer; where each site averaged 22, 150 metre deep bore holes taking roughly 4 weeks each. We completed both on time and in budget.
We know commercial drilling projects have tight deadlines. With 9 drilling rigs and our experienced team, we've drilled some of the largest projects in the UK to date. On time and within budget.
We've drilled domestic geothermal projects across the UK and Channel Islands. From country homes in Gurnsey to basements in central London.
Many people aren't aware it's even possible to draw their own water. Anyone in the UK is allowed to drill a water well on their private land and take 20,000 litres per day without an extraction licence.
Soakaways offer another way to drain rainwater, especially where the current drainage system is struggling to cope.
Find out more about soakaways.
The natural warmth from below the earth's surface is an efficient and renewable way to heat, cool and provide hot water for your home or business. Discover more about geothermal drilling and energy here.
Keep your construction project on-track.
We've worked on some of the largest dewatering projects in the UK. Most recently the HS2 site.
Discover more our ground water control services.
It's always a great moment when you realise your going to save £££s for your business!
Yes. You can even drill a borehole to feed your fishpond!
Did you know London is a notoriously difficult area to drill?
Over the years we've become experts at this kind of project.
An eco-friendly way to heat your home. Here we are installing a 210m geo loop at a home in central London.