IMPIC licence no. 116724-PAR · Class 1

Head office in Alcochete

geral@abidongroup.com +351 969 497 287

Specialism 04 of 13

Plumbing and drainage

You have a leak with no obvious source, worn pipework or a new home that needs water and drainage. We trace leaks, install or renew the pipework and pressure-test it before closing the walls. You receive a record of the test and as-built drawings showing the installed systems.

Typical domestic water and drainage system, in isometric view Isometric line drawing: meter and stop valve at the entry (01), hot and cold water pipework in PEX, hot shown dashed (02), sanitaryware with traps and branches (03), PVC soil stack (04), stack vent up to the roof (05) and inspection chamber with connection to the sewer (06). SEWERSTACK VENTMETERDHWPEX · COLD —— HOT – – –0.00 01 02 03 04 05 06 TYPICAL PLUMBING · ISOMETRIC · NOT TO SCALE

Typical plumbing and drainage layout · isometric

  1. 01 Water meter and stopcock
  2. 02 Hot and cold water pipework in PEX
  3. 03 Sanitaryware, traps and branches
  4. 04 Soil stack (main vertical drain)
  5. 05 Vent pipe up to the roof
  6. 06 Inspection chamber and sewer connection

Who it’s for

You can commission new pipework or repairs on their own or within a wider project:

  • A water leak with no obvious source
  • A new bathroom or kitchen that needs new services
  • A new build needing water supply and foul and rainwater drainage
  • A gas service pipe to adapt or seal off

What’s included

We set out the pipework, repairs and fittings in your proposal:

  • Hot and cold water in PEX or multilayer pipe
  • Foul and rainwater drainage in PVC
  • Inspection chambers and connection to the sewer
  • Venting of the drainage stacks
  • Gas: sealing off or adapting the service pipe
  • Pressure testing at 6 bar or more, for 30 minutes, before closing the walls
  • Leak detection and repair
  • Sanitaryware and appliances
Rendered wall with the bathroom water and drainage points, Vale da Amoreira
Semi-detached houses · Vale da Amoreira · 2026

How we work in this specialism

How we apply our method to this specialism, in four steps. Every proposal starts with a site visit or a review of your drawings.

  1. Site visit and diagnosis

    We trace leaks, assess your existing pipework and agree the new outlet points with you.

  2. Itemised proposal

    You receive routes and quantities for the water, foul drainage, rainwater and gas work.

  3. Works with testing

    We install concealed pipework and pressure-test it before closing the chases.

  4. Handover

    We fit and test the sanitaryware and appliances, and hand over as-built drawings. The statutory warranty applies.

What we deliver

At handover, you receive the installation and the records of the work:

  • A pressure test recorded before the walls are closed
  • Drainage connected to the sewer, with inspection chambers
  • As-built drawings showing the installed systems
  • Sanitaryware and appliances fitted and tested
  • Statutory warranty

FAQ

Your questions about this specialism. The specific terms are always in your proposal and written contract.

Can you find a leak without opening up the whole house?

Yes. We trace the leak and carry out a localised repair, opening up only what is necessary.

What pipework will you use in my home?

We use PEX or multilayer pipe for hot and cold water, and PVC for foul and rainwater drainage, with inspection chambers and a connection to the sewer.

Can you adapt or seal off my gas service pipe?

Yes. We seal off or adapt the gas service pipe as part of the works.

Related specialisms

Specialisms often commissioned alongside this one:

Specialism 04 of 13

Have a leak, or pipework that needs replacing?

Tell us where your project is and what you have in mind. We visit the site where needed and prepare a written proposal, itemised by section, with inclusions and exclusions; your contract is in writing before work starts.

Request a proposal Message us on WhatsApp

Site visit and written proposal at no cost. With or without a design.

IMPIC licence no. 116724-PAR · Written contract · Complaints Book