High-Security Environments
Professional Vault Design, Supply and Installation across Bristol and UK
Established Security Specialists since 1983
Demountable vaults provide the highest level of structural security when a standard domestic or commercial safe is no longer sufficient. Designed for environments where asset protection, compliance and risk mitigation are critical, vault systems deliver reinforced protection far beyond standalone safes.
Vaults are typically specified by the following settings where both capacity and certified resistance to attack are essential.
Financial Institutions
Jewellers
Pharmaceutical Companies
Government
Businesses Safeguarding High-Value or Controlled Assets
Vaults are constructed to meet defined security grades and are fitted with an approved strongroom door to ensure maximum protection. The vaults that Thornhill Security can supplied are available in a range of sizes, wall specifications and configurations. The benefit of a demountable vault is that it can be integrated into your premises with minimal structural disruption.
Bespoke Vault Design & Installation
We manage every stage of the vault project, from initial consultation through to final installation. Our team provides technical guidance, conducts detailed site surveys and develops tailored specifications to suit your operational requirements, building constraints and budget. We liaise directly with approved manufacturers to ensure your vault is built to specification and installed professionally within your premises.
Our Vault Design & Installation Process
Initial Discussion
We begin with a structured consultation to assess risk, compliance requirements and determine the appropriate vault grade and configuration.
Site Visit & Survey
We complete a comprehensive site survey to evaluate structural suitability, access constraints and installation logistics within your premises.
Vault Specification
Detailed technical specification outlining security grade, dimensions, wall construction and approved strongroom door requirements.
Delivery & Installation
Our team coordinates with approved manufacturers to oversee production, secure delivery and professional on-site installation.
Vault Systems from Approved Manufacturers
Security Features and Compliance of our Vaults
Our range of vaults offers next-level security features for protecting your assets including:
Protection & Performance
Five and six-sided modular vault configurations
Reinforced wall construction from 100mm thickness
Certified resistance to forced entry and attack
Protection against fire, theft and explosion
Approved strongroom doors matched to security grade
Prime steel construction suitable for commercial environments
Compliance & Assurance
Tested and certified to recognised high-security standards
Designed to meet insurance and regulatory requirements
Compatible with alarm, access control and CCTV systems
Professionally installed to agreed technical specifications
Certification and compliance documentation provided
Ongoing maintenance and inspection support available
FAQs about Vaults, Design and Installation
If we have covered your question below, please feel free to call us on 0117 967 4994.
A demountable vault is a modular, high-security structure designed to meet certified security grades for protecting high-value or controlled assets. It is typically specified where maximum resistance to attack is required. A strongroom may offer enhanced physical protection but is generally designed for broader secure storage applications rather than the highest security classifications. The appropriate solution depends on risk level, insurance requirements and regulatory obligations.
Yes. Demountable vault systems are specifically designed for installation within existing commercial, retail or specialist premises. A detailed site survey is carried out to assess structural suitability, access constraints and installation logistics. This ensures the vault can be installed safely and compliantly without major structural alterations.
Installation timelines vary depending on vault size, security grade and site conditions. Following specification and manufacture, on-site installation is typically completed within a defined and carefully managed programme. A clear schedule is agreed in advance to minimise disruption to business operations.
Yes. One of the key advantages of a demountable vault is that it can be professionally dismantled, relocated and reinstalled at a new premises. This makes it a flexible long-term investment for businesses that may expand or move in the future.

























Need Help with Vault or Strongroom Removal?
In addition to design, our team can assist with the removal and relocation of your existing vault or strong room.
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