Semtex

What Semtex does

Semtex is a privately held, multi-trade infrastructure services contractor headquartered in Palmerston North, New Zealand, operating as Semtex Limited under the trading names Semtex Plumbing, Drainage & Gas, Semtex Relining Solutions, and Semtex Trenchless Solutions. Founded in 2015, the company delivers plumbing, gasfitting, hydronic central heating, mechanical pipework, drainage, CCTV inspection, hydro jetting, and commercial and civil pipelaying services to residential, commercial/industrial, and government clients across the Lower North Island (Palmerston North, Manawatu, Wellington, Hawkes Bay) and selectively nationwide. Service delivery is mobile and project-based, supported by a Simpro-based customer portal for enterprise project management, a 24/7 emergency line for established commercial clients, and contract maintenance programs with KPI and quality management systems.

The company's technical differentiation sits in its trenchless pipe rehabilitation capability, delivered through the Nuflow Manawatu franchise and a vendor stack that includes Impreg, Proline, Prokasro, Kras, WIWA, and Nucoat. Methods offered include UV-Cured-In-Place Pipe (UV-CIPP) and Spray-In-Place Pipe (SIPP) rehabilitation, Smart Lock stainless steel sleeves, FFRP ASOE liners, and epoxy foam infiltration sealing, with stated design lives of 25-100 years and AS/NZS 4020 compliance for potable water. CCTV inspection and 5000 PSI hydro jetting with root cutting support diagnostics and clearing. Semtex is also a Davey master supplier for pumps and filtration systems and an agent for Hynds and Biorock wastewater products.

Semtex monetizes via quote-based professional services across residential maintenance (leaking taps, hot water cylinders, leak detection, water treatment), commercial/civil projects valued from NZ$50k to NZ$3M+, and recurring managed maintenance contracts. Pricing is not publicly disclosed; all engagements are quote-driven with pay-as-you-go billing. Go-to-market is sales-led and field-based, combining direct phone/contact bookings, mobile service teams, and enterprise field sales for large commercial and government projects. Customer acquisition is supported by a website, Facebook and Instagram presence, local SEO, radio advertising, and word-of-mouth referral. The firm is Master Plumbers & Drainlayers certified, holds no external investment per public records, and operates with 11-50 employees.

Name

Semtex

Legal name

Semtex Limited

Website

https://semtex.co.nz

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Semtex is a New Zealand multi-trade infrastructure services contractor delivering plumbing, gasfitting, drainage, civil pipelaying, and trenchless pipe rehabilitation to residential, commercial, and government clients across the Lower North Island. It operates as Nuflow Manawatu and a Davey master supplier.

Ownership category

akta.pro rank

Headquarters

HQ city

Palmerston North

HQ country

New Zealand

HQ region

Oceania

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Residential Plumbing Services: General plumbing maintenance and repairs including leaking taps, faulty water heaters, low water pressure, toilet repairs, hot water cylinder replacement, leak detection, roof repairs, and water treatment systems.
2. Commercial & Civil Projects: Large-scale commercial plumbing, hydraulic services, drainage construction, three waters infrastructure, plant rooms, and civil pipelaying for commercial construction projects. Project values range from $50k to $3m+.
3. Contract Maintenance: Preventative and reactive maintenance plans for commercial clients including emergency jobs, backflow testing, gas fitting, drain unblocking. Mobile troubleshooting team on-call 24/7 for established clients with KPIs, quality management and safety systems.
4. Pipe Rehabilitation Services: Trenchless pipe rehabilitation using UV-CIPP and SIPP technologies for municipal, commercial, residential, and oil & gas clients. Design life options ranging from 25 to 100 years.
5. Pumps and Filtration Systems: Supply and installation of Davey pumps and filtration systems for commercial, farm, irrigation, residential, pool and spa, and water treatment applications.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

Semtex provides plumbing, gasfitting, hydronic central heating, mechanical pipework, drainage (including CCTV inspection and hydro jetting), civil pipelaying, and trenchless pipe rehabilitation services for residential, commercial, industrial, and government clients across New Zealand's Lower North Island. Through its Semtex Relining Solutions brand and Nuflow Manawatu partnership, it delivers UV-CIPP, SIPP, stainless steel sleeve, and FFRP liner pipe rehabilitation with 50+ year design life. The company also supplies and installs Davey pumps and filtration systems, and offers contract maintenance plans with KPI tracking and 24/7 emergency support for established commercial accounts.

Product overview

Semtex is a multi-service plumbing, gas, heating, mechanical, and drainage contractor offering a portfolio of integrated services. The core offerings include Plumbing Services (general maintenance, hot water systems, leak detection), Gas Services (fitting and installation), Hydronic Central Heating, Mechanical Services (pipework), Drainage Services (CCTV inspection, cleaning, septic systems), Commercial & Civil Pipelaying, and Pumps & Filtration (Davey products). The company also operates Semtex Relining Solutions specializing in trenchless pipe rehabilitation using UV-CIPP and SIPP technologies, partnered with Nuflow. Services are delivered through contract maintenance solutions with 24/7 mobile support for established commercial clients.

Differentiator

Problem solved

Functional benefit

Brands

• Semtex Relining Solutions: Specialized trenchless pipe rehabilitation services including UV-CIPP and SIPP solutions
• Semtex Trenchless Solutions

Products and services

• Plumbing Services

Quantifiable outcome

• 50+ year durability for pipe rehabilitation
• +1 more outcomes

Named customers19 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Nuflow ManawatucoreTechnology or IntegrationSemtex operates as Nuflow Manawatu, part of the Nuflow pipe rehabilitation network. Provides trenchless pipe rehabilitation solutions using innovative technologies including UV-CIPP and SIPP methods for residential, commercial, council, municipal, and oil & gas clients.
• Master Plumbers & DrainlayerscoreStrategic or Co-development PartnerIndustry association membership ensuring Semtex is authorized to carry out restricted plumbing, gasfitting, and drainlaying work. All members have Certifying tradespersons with highest qualifications.
• Davey Water ProductscoreTechnology or IntegrationSemtex is a Davey master supplier, offering supply and installation of the full Davey range of pumps and filtration systems for commercial, farm, irrigation, residential, pool/spa, and water treatment applications.
• Palmerston North City CouncilminorStrategic or Co-development PartnerGovernment client for various municipal drainage and infrastructure projects.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Laser Plumbing New Zealand: National plumbing franchise network operating across New Zealand with residential, commercial, and maintenance services. Directly comparable to Semtex on service mix (plumbing, gasfitting, drainage) with broader geographic reach and similar SMB/enterprise GTM.
• Aquaheat New Zealand: NZ-wide plumbing, HVAC, and mechanical services contractor serving residential and commercial markets. Comparable to Semtex on commercial plumbing, gasfitting, hydronic heating, and maintenance contracts; larger scale and broader coverage.
• Nuflow New Zealand: Trenchless pipe rehabilitation franchise network of which Semtex is the Manawatu partner. Directly comparable on UV-CIPP and SIPP relining offerings; represents both a peer (other regional licensees) and a partner relationship for Semtex.
• Cushman Plumbing & Drainage: Manawatu-based plumbing and drainage contractor serving residential and commercial customers in the Lower North Island. Closely comparable regional peer with similar service portfolio and customer segments to Semtex.
• Drain Doctors NZ: NZ specialist drainage contractor offering CCTV inspection, drain unblocking, and trenchless repair. Comparable to Semtex on drainage/CCTV service line and small-to-mid commercial/residential project mix.

Broad incumbents

• Brian Perry Civil (Fletcher Construction): Large NZ civil contractor (part of Fletcher Building) delivering three-waters infrastructure, drainage, and pipelaying for government and commercial clients. Overlaps Semtex's civil pipelaying segment at much larger scale and with broader geographic and capital resources.
• Fulton Hogan: Major Australasian infrastructure and civil contractor with water/drainage capability. Broader incumbent competing for the same three-waters and subdivision civil pipelaying tenders Semtex targets, though not focused on plumbing maintenance.

Regional players

• Reliance Plumbing Wellington: Wellington-region plumbing and drainage service provider. Comparable service mix to Semtex but operating in adjacent geography (Wellington) rather than directly overlapping Palmerston North/Manawatu.

Others

• Master Plumbers, Gasfitters & Drainlayers NZ: Industry association of which Semtex is a member. Relevant context for understanding the regulatory and trade certification framework that governs Semtex's competitive landscape but not a commercial competitor.
• Hynds Pipe Systems: NZ supplier of pipe, wastewater, and drainage products for which Semtex is an agent (Hynds wastewater systems). Not a direct competitor but an enabling supplier partner in the same ecosystem.

Market position

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/semtexplumbing
• Instagraminstagram.com/semtexplumbing
• LinkedInlinkedin.com/company/semtex-limited

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Semtex