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As Master Plumbers & Drainlayers we take
what we do seriously

Our Mission

To provide exceptional plumbing, gas, drainage & civil pipelaying practices and services to our clients through maintaining long term relationships, being innovative with the latest technology and expanding our services to meet their needs.

Semtex has specific and realistic goals striving to:

  • Maintain long-term relationships with clients
  • Innovate with the latest technology to better serve our clients and our team
  • Expand services to meet the demands of clients

Our Values


Willing to change to get
the task done

We are open-minded and flexible to ensure we always meet expectations. Redefining our core business to adapt to our client’s needs.


No task is too important that we cannot do it safely

Our employee and client safety is imperative. We maintain a positive and proactive safety culture and lead by example in all aspects of our business.


It's not about the idea, it's about making the idea happen

We acknowledge the weaknesses within our industry and create forward thinking solutions to overcome them. By embracing technology, we are able to improve our systems and services.


An environment our team and clients want to be a part of

We work together to create a team culture of inclusion based on trust, respect and accountability. Working with our clients to create a positive experience.

Semtex, we are Master Plumbers & Drainlayers!

In New Zealand, most sanitary plumbing, gasfitting or drainlaying is 'restricted'. That means it's illegal to do it yourself because of the health and safety risks. You also risk expensive mistakes and even voiding your insurance.

You need to call on the services of an authorised tradesperson. When you use a plumbing firm that is a member of Master Plumbers & Drainlayers, you know they are authorised to carry out the work they do.

All Master Plumbers & Drainlayers members have a Certifying tradesperson on the team. These people have the highest qualification available and are responsible for making sure the company's work is done competently.

How we work

Changes & Cancellations
We are always happy to reschedule an appointment free of charge. If you need to cancel your appointment, please provide us with at least 24 hours’ notice.

At our discretion, a $65 cancellation fee applies to all appointments cancelled within 24 hours of your scheduled time.
A 50% deposit maybe requested upfront before work commences for all jobs valued at over $1000.
Leaving a site
Our technicians understand the importance of leaving your home or business just the way you like it. This means we will ensure the site is safe, and secure any doors or windows we have opened. We will clean up any project-related mess (unless instructed otherwise).

We invest in stocking our vans to maintain a reasonable amount of frequent use items. From time to time our technicians may need to leave site to purchase materials and our charges will include this time.
Non compliant appliances or installations
The Gas (Safety and Measurement) Regulations 2010 ‘the Regulations’ require us to carry out gasfitting work according to a specified codes of compliance. If your appliance is non-compliant with the Regulations, we will notify you in writing and issue a ‘failed’ certificate. If remedial work to ensure that the appliance meets Regulations is arranged with us within 7 days of the issue of this certificate, we will not make a second charge for the subsequent certificate (when the appliance is compliant).
Non account holders, payment is due within 7 days of job completion, or on receipt of invoice, and may be made by cash, cheque, credit card, debit card or online bank transfer.

Once your job is complete, or if there is a pause in works, an email invoice will be sent. Please let us know before work commences if you would prefer an invoice to be posted to you.
Progress Payment
Progress invoices are issued for some projects before completion. These cover the costs of labour and materials as work progresses. We know you need to stay informed, so we will normally send out progress invoices at the end of every stage of work (disconnection, pre-pipework, fit-off etc). We will also send progress invoices if, for any reason, there is likely to be a delay in the work.

You can request an invoice at any time by emailing This email address is being protected from spambots. You need JavaScript enabled to view it.

We reserve the right to stop work if progress payments have not been met. .
Query, comment or complaint?
At Semtex we ask all our staff to provide you with a great customer experience. From time to time we may contact you to ask for your comments on the service we have provided. This helps us to understand how we can better meet your needs in the future.

If our service was great, or if something wasn’t quite right, we appreciate all feedback. Please email This email address is being protected from spambots. You need JavaScript enabled to view it. or if you require an urgent response, please call us on 022 194 5892. If you do not understand, or wish to dispute any of the charges contained within our invoices, please notify us within 5 days of the invoice date.
Unpaid accounts
If you are experiencing genuine financial hardship, please contact us to discuss a payment plan. If payment remains outstanding for more than 7 days from the invoice due date, a charge of $65 + GST may be added to your account at our discretion. If payment is not received, your account may be referred for debt collection.
All costs in relation to collection of overdue accounts will be added to your account.
We reserve the right to charge interest on accounts that remain overdue for more than 30 days.