MPT stands for Mineral Plaster Technology, a unique range of NATURAL exterior plastering products

MPT plasters are made from natural materials, using cement, lime and sands produced in New Zealand - enhanced with the highest quality European additives.

  • MPT systems allow your walls to breathe naturally.
  • Cost-effective cladding solutions that are designed to last.
  • Environmentally friendly products made from all-natural materials.
  • MPT plaster systems provide strength, weather-tightness and insulation.

MPT plasters can be used on most substrates including polystyrene insulation boards, masonry surfaces such as concrete, concrete block, AAC panel, brick, clay and stone.  MPT plasters can also be used on straw-bale, rammed earth, and fibre cement sheeting.

Natural mineral additives have been incorporated into the plasters, according to recipes first developed in Germany, then adapted for New Zealand conditions for improved application and performance.

MPT flashings are a unique range of weather-tight flashings that create a tight seal, protecting against extreme weather conditions and providing long term protection to the substrate and framing.

The easy application, versatility and durability of MPT plaster and flashings compliments great architectural design while guaranteeing a solid finish that will stand the test of time.





Rhys Metcalfe

MANAGING DIRECTOR (MPM; Dip.Bus.Stud(Law); Dip.NZPol.)Rhys comes from a law enforcement and corporate risk management background having served for 22 years in the NZ Police and as General Manager at NZ's Serious Fraud Office.  Through Petros Holdings Ltd, he bought the Craftstone brand in late 2016.  Impressed with the quality of the MPT product used in the Craftstone system, he bought the MPT brand off APCO Coatings in late 2018.  The brand was then shelved for 14 months while recipes and systems were tested and refined, and new accessories were designed to ensure that we only offer the best exterior plaster systems available in New Zealand.


Mike Monteith

BUSINESS DEVELOPMENT MANAGER (Trade Cert.)Mike holds New Zealand's highest qualifications in exterior plastering; and painting and decorating.  For many years he operated a successful plastering and painting business.  He has worked in senior sales and technical roles for Dulux, Fosroc, APCO and Mirotone.  His expertise in the plaster and paint industries and his commitment to providing first-rate technical support, makes him a highly-valued member of our team.


Joe Paul

TECHNICAL MANAGERJoe is widely respected for his expertise in technical aspects of cladding systems.  He has over 30 years of experience with plaster cladding systems and was instrumental in the creation of the Mineral Plaster Technology brand back in 2001.   Joe has been a consultant to BRANZ and developed many of the testing systems that they still use to verify the efficacy of building products in New Zealand today.  He is credited with the development of the first BRANZ Appraised cavity system and has been our leading Technical Manager since 2010.


Lew Brown

QUANTITY SURVEYING & LOGISTICSLew has been with the company since 2014.  Originally from a public service background, Lew is a qualified Quantity Surveyor and leads the QS functions of the business. 

Lew also supervises the logistics side of the business, including aspects of our transitional facility.


Mandy Gibbon

ADMINISTRATIONMandy is our magician in the Administration role.  She is the glue that holds our office together and does a wonderful job managing all office functions.  From first customer contact, to issuing warranties, she leads the administrative aspects of every project.


Talk to us about your project
0800 25 23 678

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