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RJ MECHANICALPIPEWORK & ENGINEERINGRJ Mechanical — Pipework & Engineering
Looking up a service riser shaft with multiple insulated vertical pipes

Services / Risers

Mechanical Riser Pipework Installation

Risers carry services vertically through a building, often within tight shafts and alongside other trades. We install riser pipework with careful setting-out, robust support and a sequence that matches the build programme.

What the service involves

  1. 01Setting out riser positions and branch connections floor by floor.
  2. 02Installing vertical pipework with appropriate anchors, guides and supports.
  3. 03Making branch connections to each floor or dwelling.
  4. 04Testing sections in line with the construction sequence.

Types of work covered

  • Heating and chilled-water risers
  • Domestic water risers
  • Branch connections to apartments or floors
  • Riser replacement in refurbishments

Suitable applications

  • Apartment blocks and residential developments
  • Multi-storey offices
  • Student accommodation
  • Hotels and mixed-use buildings

Typical project considerations

What we plan for

  • Shaft space shared with other services
  • Expansion over the height of the building
  • Fire-stopping interfaces at floor penetrations
  • Working at height and lifting in shafts

Site coordination & installation planning

Riser installations follow the structure up the building, so we align our sequence with the main contractor's programme and coordinate shaft space with other trades.

Frequently asked questions

How are risers supported over several floors?

Riser pipework uses a combination of anchors, guides and supports positioned to manage weight and expansion. Arrangements depend on the design and building structure.

Who carries out fire-stopping?

Fire-stopping is normally carried out by a specialist. We coordinate penetration sizes and positions so the fire-stopping contractor can complete their work properly.

Can you replace risers in occupied buildings?

Riser replacement in occupied buildings requires careful phasing and resident communication. We can assess feasibility and propose an approach.

Start a conversation

Planning your next pipework project?

Tell us about your project, the services you require and your anticipated programme. We'll review your enquiry and discuss the next steps.