Dry Riser Alterations in London
Professional Dry Riser Alteration & System Extensions
Dry riser alterations in London is essential when buildings are extended, refurbished, or reconfigured. Whether you are adding new floors or modifying an existing building, your dry riser system must be updated to remain compliant, efficient, and ready for emergency use.
At Dry Riser One, we specialise in dry riser installations, system extensions, and alterations across London. Our experienced engineers ensure your system meets BS 9990:2015 standards, providing complete peace of mind for building owners, developers, and contractors.
When Do You Need a Dry Riser Alteration?
A dry riser alteration in London is commonly required when a building is extended vertically. For example, a property originally built with four floors may later be expanded to include additional levels. In this case, the existing dry riser installation must be extended to serve the new floors.
Other situations where dry riser alterations may be needed include:
Building refurbishments or layout changes
Change of building use or occupancy
Compliance upgrades to meet current regulations
Repositioning of inlet cabinets or pipework
Failing to update your dry riser system can result in non-compliance and reduced firefighting effectiveness.
How We Carry Out Dry Riser Alterations
Our dry riser installation and alteration process is carefully planned to ensure minimal disruption and maximum efficiency.
Structural Preparation: Before installation begins, the construction team prepares the building by creating service routes for the pipework. This typically involves core drilling openings (around 150mm diameter) through new floors to allow for vertical pipe extension.
System Extension: Our engineers extend the dry riser pipework from the existing system to the new levels. All pipework is securely installed, aligned, and supported to ensure long-term durability and performance.
Why Choose Our Dry Riser Installation Services?
Choosing the right contractor for your dry riser alterations in London is critical. At Dry Riser One, we combine technical expertise with practical experience to deliver reliable solutions.
Fully Compliant Systems: All dry riser installation and alteration work is carried out in line with BS 9990:2015 and relevant fire safety standards.
Experienced Engineers: Our team has extensive experience working on complex buildings across London, including residential, commercial, and mixed-use developments.
Bespoke Solutions: Every dry riser alteration is tailored to your building layout, ensuring optimal performance and compliance.
End-to-End Servics: From design and installation to testing and maintenance, we provide a complete dry riser solution.
The Importance of Correct Positioning
During any dry riser alteration in London, positioning is key. The inlet cabinet must be:
Clearly visible and unobstructed
Easily accessible to fire service vehicles
Within 18 metres of a suitable access point
Incorrect positioning can lead to delays during emergencies and reduced system performance. Our team ensures all installations meet both regulatory and operational requirements.
Maintenance After Alteration
Once your dry riser system is extended, ongoing maintenance is essential. Regular inspections and testing ensure the system remains fully operational and compliant.
We offer:
6-monthly visual inspections
Annual pressure testing
This ensures your system is always ready when it’s needed most.
Get Expert Advice on Dry Riser Alterations in London
If you are planning a building extension or need to upgrade your existing system, our team is here to help. We provide clear, professional guidance tailored to your project requirements.
At Dry Riser One, we deliver reliable dry riser installation and alteration services across London, helping you stay compliant, protected, and prepared. Call us today: +44 (0) 800 061 4111