Insulmax® retrofit wall and ceiling insulation in Manawatū
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Kathleen and Stephen Jestin
Insulmax® Manawatu
The Insulmax® Manawatū team specialises in retrofit wall insulation, perfect for older homes. We insulate homes throughout the lower central North Island including Palmerston North, Feilding, Marton, Taihape, Whanganui, Levin, Dannevirke, Pahiatua and Woodville.
Our innovative approach means you can enjoy the benefits if insulation without the hassle of extensive renovations. Our retrofit insulation services are designed to be minimally invasive yet maximally effective, ensuring your home’s walls are insulated with the utmost care and professionalism. Get in touch today to book your free home insulation assessment.
Contact us

Kathleen and Stephen Jestin
Insulmax® Manawatu

Meet the Manawatū team
Meet Stephen and Kathleen Jestin, the dynamic duo behind the Insulmax® Manawatū franchise.
Based in Feilding, they've been transforming homes since 2006, and joined the Insulmax® family in 2015. Stephen, a seasoned builder, has always been passionate about energy efficiency. He discovered his interest in insulation when he saw the impact it had on people's lives which cemented his commitment to the field. What sets the Jestins apart is their genuine belief in what they do. They've seen first-hand the remarkable difference Insulmax® can make in a home – from customers no longer needing to use their heat pumps due to the increased warmth, to impressive savings on power bills. They look forward to helping you make your home more comfortable and energy-efficient with Insulmax®.
Together, let’s transform your home into a more energy-efficient warmer, drier and more comfortable place to live – all year round!
Why choose Insulmax® for your home insulation?
CodeMark certification
Ensuring compliance with the New Zealand Building Code and approval by every Council in New Zealand.
Suitable for all common claddings
Including weatherboard, brick, roughcast / stucco, and interior lining.
Minimal disruption
Your Insulmax® insulation installation is usually completed in just one day.
Eco-friendly solution
Recyclable mineral fibre insulation, reducing your home’s carbon footprint.
50 year warranty
Premium European blown mineral fibre insulation with a 50 year install warranty.
No renovation needed
Insulation is installed through a hole smaller than a 10 cent coin.