Rough-In Plumbing Mitchells Plain | New Build & Renovation First Fix

About Rough-In Plumbing in Mitchells Plain

Rough-in plumbing, also known as first fix, is the foundation of your entire plumbing system. It involves installing all water supply pipes, drainage pipes, and vent pipes before walls are closed up, floors are screeded, and finishes are applied. Getting the rough-in right is critical because mistakes hidden behind walls and under floors are extremely expensive to fix later.

Abacas Solution handles rough-in plumbing for new builds, extensions, and renovations throughout Mitchells Plain. We work from architectural plans to position all pipe runs accurately for kitchens, bathrooms, laundries, and outdoor taps. Our rough-in work includes hot and cold water supply pipes (copper or PEX), drainage pipes with correct falls for gravity flow, vent pipes to prevent airlock and sewer gas entry, geyser connections and valve installations, and connection points for future fixtures.

We coordinate closely with builders, electricians, and tilers to ensure pipe positions are accurate for the planned fixture locations. This is especially important for wall-hung toilets, concealed cisterns, undermount basins, and shower drains where millimetre precision matters. Every rough-in installation is pressure-tested before walls close and documented with photos showing pipe routes for future reference. We comply with SANS 10252 for water installations and SANS 10400-P for drainage, ensuring your plumbing passes municipal inspection.

This is one of several specialist services we offer under specialist plumbing in Mitchells Plain. As part of our Mitchells Plain plumbing team, we bring over 25 years of hands-on experience to every job.

Rough-In Plumbing in Mitchells Plain - Abacas Solution

When to Call for Rough-In Plumbing

Call us when you are planning a new build, extension, or renovation and need plumbing installed before walls close. Contact us at the planning stage so we can review drawings and coordinate with your builder. Early involvement prevents costly changes during construction.

Our Rough-In Plumbing Process

1

Plan Review

We review architectural plans, confirm fixture positions with the builder and client, and mark out all pipe routes on site.

2

Pipe Installation

We install water supply pipes, drainage with correct falls, vent pipes, and geyser connections according to the plan.

3

Pressure Testing

We pressure-test all water lines and cap drainage for inspection before walls and floors are closed.

4

Inspection & Documentation

We facilitate municipal plumbing inspection, provide photo documentation of concealed pipe routes, and confirm readiness for second fix.

Many homeowners in Mitchells Plain who need rough-in plumbing also require rainwater tank installation in Mitchells Plain and irrigation system. We handle everything, so you only need one call.

Safety & Compliance

Rough-in plumbing must comply with SANS 10252 (water installations) and SANS 10400-P (drainage). Water supply pipes must be pressure-tested at 600 kPa for 2 hours before being concealed. Drainage must have minimum falls of 1:60 for 110mm pipes and 1:40 for 50mm pipes. All drainage must be properly vented to prevent trap siphonage. Municipal inspection may be required before walls are closed.

Rough-In Plumbing Cost in Mitchells Plain

Rough-in per bathroom (supply + drainage): R8,000-R15,000. Kitchen rough-in: R4,000-R8,000. Laundry rough-in: R3,000-R6,000. Full house rough-in (3 bed, 2 bath): R25,000-R50,000. Extension or granny flat: R15,000-R30,000. Prices vary with pipe material choice, complexity, and access. Geyser rough-in: R2,000-R4,000.

Frequently Asked Questions

When should rough-in plumbing be done during construction in Mitchells Plain?

Rough-in plumbing happens in two phases. Underground drainage is installed before the slab is poured. Above-ground supply and drainage pipes are installed after walls are built but before they are plastered and closed. Timing coordination with your builder is critical, and we schedule our work to fit the construction programme at your Mitchells Plain site.

What pipe material do you use for rough-in plumbing?

For water supply, we use either copper pipe (traditional, proven, recyclable) or PEX pipe (flexible, corrosion-resistant, faster to install). For drainage, we use PVC pipe in standard sizes (40mm, 50mm, 110mm). We discuss the pros and cons of each option and let you choose based on budget and preference. Both options are code-compliant and reliable.

Can you handle the plumbing for a house extension in Mitchells Plain?

Yes, extensions and granny flats are a major part of our work. We extend water supply from your existing system, install new drainage connecting to the existing sewer line, and ensure adequate water pressure and flow to the new section. We also check that your existing geyser can handle the additional demand or recommend a second geyser for the extension.

Do I need a plumbing inspection for my new build in Mitchells Plain?

Your local municipality in Mitchells Plain may require a plumbing inspection before drainage is covered and before walls are closed. This verifies compliance with SANS 10252 and SANS 10400-P. We prepare the installation for inspection, ensure all pressure tests are completed, and coordinate with the building inspector. We provide all documentation needed for sign-off.