Who we are

At Semtex, we pride ourselves on providing professional, prompt, reliable, and top-quality solutions to your problems - big or small! 

Our experience completing projects of all sizes, both nationally and internationally, means we know what we’re doing, and can be trusted within domestic, commercial & civil spaces.

A passion for innovation and initiative has helped Semtex become one of Manawatu’s premier plumbing & pipelaying contractors. We take pride in accepting only the highest possible work standards, setting the benchmark for the industry and raising the bar for our competitors.

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How we work



    Semtex can assist with your plumbing problems.  Anything from a leaking tap to large commercial projects 

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  • Drainage

    Semtex are drainage specialists.  Whether it is a drain that needs laying, cctv / unblocking or a large three water civil project 

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  • Gas

    Semtex are your commercial and residential gasfitting service and installation technicians of choice.

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  • Mechanical

    Semtex provides specialist mechanical pipework services for a range of requirements both domestically and commercially

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  • Heating

    Semtex supply and install New Zealand’s widest range of heating appliances & central heating systems

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Contact us today

For queries or bookings related to our services