Manholes (inspection chambers) are critical access points for any foul or surface water drainage network. They enable safe inspection, cleaning, and future repairs without unnecessary excavation. Getting the specification and installation right at the start prevents costly problems later, keeps your system accessible, and ensures full compliance with UK Building Regulations and water industry standards.
You may require new manhole installations in a variety of situations, including:
Properly positioned manholes make future maintenance easier, reduce the risk of emergency digs, and ensure long-term system efficiency.
Where applicable we assist with build-over agreements, Section 106/Section 50 permits, and coordination with local authorities or water companies. All works are carried out to current UK standards and best practice.
Use this quick guide to choose the right cover class, chamber type, and setup for your project.
Tip: For decorative finishes use a recessed cover (block paving, resin or slab infill) in A15/B125 zones.
We can survey, specify, supply & install — and provide as-built plans for your records or approvals.
Every installation is tailored to your site, but most follow a clear process to ensure durability, compliance, and safe access:
The ground is excavated to the correct depth and a stable concrete base is laid, ensuring long-term stability and correct alignment.
Pre-formed or brick-built chambers are installed depending on site requirements, with watertight joints to prevent leakage and infiltration.
Load-rated covers and frames are fitted according to location — from A15 garden covers to D400 highway-grade units.
Once installed, chambers are checked for alignment, flow efficiency, and compliance with current building and drainage regulations.
At Clearmasters, we provide expert manhole installations across Surrey, Sussex, Kent, Hampshire and London. Whether you’re a homeowner extending your property or a developer requiring multiple new chambers, our team delivers safe, compliant, and long-lasting installations.
We use only approved materials and proven construction techniques to ensure every installation stands the test of time. Our experienced engineers work with minimal disruption, keeping your project on schedule and within budget.
With 34+ years in the industry and approvals from Checkatrade and Surrey Trading Standards, you can trust Clearmasters to deliver quality workmanship and excellent customer service every time.
In most domestic projects, planning permission isn’t required, but new drainage connections or works on public sewers may require approval. We’ll advise and handle permissions where needed.
The cover depends on its location. Garden and patio manholes typically use A15 load covers, while driveways and roads require stronger B125–D400 rated covers. We’ll ensure the right one is specified.
Most single-chamber domestic installations are completed within 1–2 days. Larger commercial projects may take longer depending on ground conditions and site requirements.
Costs vary depending on size, location, and ground conditions. We provide free, no-obligation quotes with clear pricing and no hidden extras.
Yes, all work is carried out to meet BS EN standards and UK Building Regulations, ensuring full compliance and long-term reliability.
When installed correctly with quality materials, a manhole can last several decades. Plastic chambers typically last 50+ years, while concrete or brick-built chambers can exceed 100 years with proper maintenance. Choosing the correct cover class and carrying out occasional inspections ensures long-term performance and safety.
