Independent Gas Protection Design

We design below-ground gas protection systems based on forensic site assessment and BS8485 compliance—not manufacturer preference. Our independence means you receive unbiased system specification tailored to actual ground conditions. With hands-on QA monitoring and insurance-backed expertise, we protect your project from both gas ingress and future liability.

Why Choose Surv-A?

Unbiased Consultation

Independence matters. We have no ties to manufacturers or contractors, so our advice is genuinely impartial, and you’ll get solutions designed around your project's requirements.

Tailored Solutions

Effective solutions start with proper diagnosis. We develop bespoke designs based on site analysis, risk assessment, and compliance requirements—tailored to your building's conditions and usage.

Expert Experience

We have over sixty years of combined industry experience – and we've never had a claim made against our designs. This track record comes from our uncompromising standards.

Industry Knowledge

Our expertise includes thorough understanding of British Standards and building regulations, ensuring your project achieves compliance.

Insurance Backed

We're backed by Professional Indemnity insurance up to £10m for complete peace of mind - to date, we've never had to use it.

Get in touch for expert advice

Speak to our team about your project and discover how our specialist services can support you.

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Why Below-Ground Gas Protection Matters

Ground gases present hidden but serious threats to below-ground structures. Methane can create explosive conditions, while radon and carbon dioxide pose long-term health risks to occupants. Failing to address these hazards results in regulatory breaches and expensive remedial works. Effective gas protection is fundamental to building safety, legal compliance, and long-term asset performance. As independent specialists, our team has all of the knowledge and experience needed to design and install below ground gas protection systems.

How We Design Below-Ground Gas Protection Systems

Our design process begins with thorough site analysis—reviewing ground investigation data, gas monitoring results, and geological conditions to establish actual risk levels. We then specify protection measures aligned to BS8485 +A1, selecting appropriate membranes, ventilation strategies, and verification methods based on site-specific hazards—not generic solutions.

Every design includes detailed specifications, CAD drawings, and installation guidance to ensure systems perform as intended and withstand long-term ground conditions. Speak with our team today to discuss your project.

How we Support Projects

Discover how Surv-A can add value and support every stage of your project.

Typical scope of involvement

We support projects where below ground gas protection needs to be considered as part of the wider technical design approach.

How we support projects

This can include review of project requirements, gas protection strategy, coordination with related systems, and technical input through design development.

Where we add value

By helping teams approach gas protection in a more coordinated and considered way, we support clearer technical decision making and stronger project confidence.