About Us 

McLennan Insulation Limited has been a major insulation contractor in the Wellington Region for over twenty years.

McLennan Insulation Limited specialises in commercial and industrial insulation, we are installers of a wide range of thermal and acoustic insulation products for air conditioning, heating, refrigeration and plumbing services. We have a comprehensive sheetmetal workshop and specialist equipment for the injection of polyurethane foam insulation.

With many hundreds of contracts successfully completed McLennan Insulation Limited has a wide range of experience and skills in all aspects of the insulation scene.

Our People

We highly value the skills and ability of each member of our team, many of whom have been with us for a long time.


Owner, Alan McLennan (centre) with contract supervisors Eduard Magadia (left) and Vance Stirrat (right). Together they can boast over 70 years experience in insulation contracting.

Staff members at Mana recently, after a successful days Hapuka fishing aboard “Melicent” with Pete Lamb.

Our Mission

To exceed customer expectation in the service we provide and to be competitive without compromise to quality, ethics or health and safety.