Hazardous Ground Gas Protection Design
£10 Million Professional Indemnity Insurance
GeoShield creates bespoke and manufacturer-supported designs, helping project teams satisfy Building Control, warranty providers and site-specific design requirements.
Our specialist design services cover:
- Radon protection systems
- Ground gas protection systems
- Waterproofing systems
- Attenuation tank systems
Professional Indemnity Insurance
Our designs are backed by our Professional Indemnity Insurance for peace of mind.
All designs follow current guidance and British Standards including:
- BS8485:2015+A1:2019 for Ground Gas Protection (methane and carbon dioxide)
- NHBC NF94 for NHBC residential developments
- BR211:2025 for radon protection
- BS8102:2022 for waterproofing
- CIRIA C753 (The SuDS Manual)
Specialist System Design
If your project requires specialist protection, waterproofing or attenuation design, our design service provides cost-effective, buildable solutions created by industry specialists.
Our design services cover:
- Radon protection
- Ground gas protection
- Waterproofing
- Attenuation tank systems
Our designs can support:
- Compliance with Building Regulations
- Compliance with warranty provider requirements
- Reduced risk of future liability through PI-backed designs
- Collateral warranties, available on request
Our System Design Services
See for yourself the comprehensive System Design Services offered by GeoShield
Contact us to discuss your design
If you need a specialist designed system our team is ready to help.
Contact us today to request a design quote.
What is included in your Design Package
Following our design review, GeoShield can provide a clear, practical design package to support specification, coordination and installation on site.
Your package can include:
- Membrane and accessories specification
- CAD design drawings
- Detail drawings for key junctions and penetrations
- Bespoke or manufacturer-supported design options
- Installation notes to support buildability on site
- Design information aligned with relevant guidance, Building Control requirements and warranty provider expectations
- Supporting documentation for contractor, consultant and client review
Why Choose Us?
- Design expertise headed by a Chartered Engineer
Our design team is headed by a Chartered Engineer, supported by experienced specialists with decades of knowledge across ground gas, radon, waterproofing and attenuation systems. - Generic and manufacturer-supported designs
We provide flexible design routes to suit your project, specification, warranty requirements and preferred installation approach. - Buildable, site-ready details
Our designs are created with real site conditions in mind, helping reduce installation issues and support a smoother build process. - PI-backed reassurance
Our design work is supported by £5,000,000 of Professional Indemnity Insurance, giving project teams added confidence during technical review and project delivery. - Support from design stage to site
We can assist early in the process, attend design discussions and help reduce the risk of late-stage changes.
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Yes, our design department are very experienced in ground gas design, we often sit on the committees for guidance documents such as CIRIA, BRE and British Standards. We have PI insurance so are happy to provide PI backed designs.
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We are always keen to be involved as early as possible. This allows us to give input at early stages and potentially avoid changes and amendments later in the design process.
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Yes, all our designs are produced with buildability at the forefront of our minds. If a design cannot be installed easily due to obstructions or sequencing, there is a higher risk that the installation will be challenging and not meet the required standard.
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Always! We consider the site conditions and are guided by the Site Investigation Report, we then produce a fully spec’d design that is suitable for the site and the challenge gases or chemicals.
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We consider the guidance in several industry documents, including but not limited to BS8485:2015+A1:2019, BR211, C665, C716, C748, NHBC’s NF94 and the Offsite Alliance Ground Gas Best Practice Guide.
“I would highly recommend GeoShield to anyone looking for reliable and efficient gas barrier verification services. A genuinely great company to work with.”
M.S
