uPVC, or unplasticised polyvinyl chloride, is a rigid, durable and low-maintenance material used in premium window and door systems. Fenestra uPVC windows combine thermally efficient frames with high-performance glazing to help create warmer, quieter and more energy-efficient West Coast homes.

FENESTRA uPVC

Name: Fenestra uPVC Window Installation and Retrofitting
Brand: Fenestra

Fenestra uPVC Windows & Doors | Warmer, Healthier, More Efficient Homes

Upgrade Your Home with Fenestra uPVC Windows

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Call Ken 027 200 0962

Energy Efficient

15 Year Warrenty

Warmer Homes

Healthier Living

Reduced Condensation

Retrofit Windows for Warmer, Healthier Homes on the West Coast

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Ken Drummond Lake Brunner Builder delivers high-performance retrofit uPVC window solutions designed to transform cold, damp homes into warm, comfortable living spaces.

As the West Coast agent for Fenestra uPVC systems, every installation is built for New Zealand conditions, combining European design with superior thermal performance and durability.

From character homes to full renovations, we retrofit modern uPVC joinery that eliminates condensation, reduces outside noise, and creates a healthier home environment.

✔ Warmer, drier homes with minimal heat loss
✔ Quieter living with reduced outside noise
✔ Energy efficient performance that lowers power bills

Professional uPVC Window Installation

Ken Drummond Builders professionally installs premium Fenestra uPVC windows throughout the West Coast, helping homeowners enjoy warmer, healthier and more energy-efficient homes.

Warmer, Energy-Efficient Homes

Reduce heat loss and improve your home's thermal performance with premium double-glazed uPVC windows designed for New Zealand conditions.

Reduce Condensation & Mould

Improve indoor air quality with thermally efficient windows that minimise condensation and help create a healthier living environment.

Lower Heating Costs

High-performance insulated frames help keep warmth inside during winter, reducing energy use and helping lower power bills.

Quieter Living

Advanced glazing technology reduces outside noise, creating a quieter and more comfortable home.

Low Maintenance

Forget sanding and painting. uPVC windows are durable, weather-resistant and designed for easy care.

Built to Last

German-engineered Fenestra window systems are backed by a 15-Year Warranty for long-term peace of mind.

Finance Options Available

Energy-efficient window upgrades may be eligible for Green Home Loans or renovation finance through participating New Zealand lenders.

TRUSTED BY WEST COAST HOMEOWNERS

✔ Licensed Building Practitioner

✔ Official Fenestra uPVC Installer

✔ 30+ Years Building on the West Coast

✔ Renovation Specialists

✔ Hundreds of Successful Projects

"Ken and the team transformed our home. It's noticeably warmer, quieter and condensation is gone."

Why West Coast Homes Benefit from uPVC Windows

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Many West Coast homes were built with older timber or aluminium joinery that allows valuable heat to escape.

Combined with our high rainfall, cooler temperatures and coastal climate, this can lead to condensation, mould and expensive heating bills.

Retrofitting your home with modern Fenestra uPVC windows can dramatically improve warmth, comfort and energy efficiency.

Signs Your Home Needs Retrofitting

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Is it Time to Upgrade Your Windows?

Do your windows drip with condensation every winter?
Is your home difficult to heat?
Are your aluminium frames cold to touch?
Can you hear traffic outside?
Are your timber windows rotting?
Are your power bills increasing?

If you answered yes to any of these, retrofitting Fenestra uPVC windows could dramatically improve your home's comfort and energy efficiency.

Our Retrofit Process

Free Consultation

Home Assesment

Measure & Quote

Choose your Style

Manufacture

Professional Installation

Enjoy a Warmer Home

Finance Your Energy-Efficient Home Upgrade

Upgrade your home sooner with flexible finance options.

Why homeowners finance their retrofit:

✓ Spread the cost over time

✓ Enjoy a warmer home sooner

✓ Improve energy efficiency

✓ Reduce heating costs

✓ Increase your home's value

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Green Home Loans & Renovation Finance

Upgrading to premium Fenestra uPVC windows is one of the most effective ways to improve your home's warmth, energy efficiency, comfort and long-term value.

Many New Zealand banks offer Green Home Loans and Home Renovation Finance for eligible energy-efficient home improvements. While lending criteria vary between providers, upgrading to high-performance double-glazed uPVC windows may qualify.

Ken Drummond Builders can provide detailed quotations and supporting documentation to assist with your finance application.

Finance Benefits

Potential eligibility for Green Home Loans
Renovation lending through participating NZ banks
Detailed quotations for finance applications
Stage your project to suit your budget
Improve your home's energy efficiency
Invest now and enjoy the benefits sooner

Talk to Ken About Your Options →

Green Home Loan and renovation finance eligibility is determined by individual lenders. Ken Drummond Builders does not provide financial advice. Please contact your bank or mortgage adviser for lending information.

30+ years Experience
West Coast Owned

Frequently Asked Questions About Retrofitting uPVC Windows

If you're considering replacing old timber or aluminium windows, you're probably wondering what the process involves and whether it's the right investment for your home.

Below we've answered some of the most common questions about Fenestra uPVC windows, double glazing, retrofitting existing homes, reducing condensation, improving energy efficiency and financing your renovation.

Whether you're renovating a character villa, Lockwood home or family home on the West Coast, Ken Drummond Builders is here to help you create a warmer, healthier and more comfortable place to live.

Fenestra uPVC

What is uPVC?

uPVC (Unplasticised Polyvinyl Chloride) is a highly durable, low-maintenance building material used worldwide for premium window and door systems. Unlike standard PVC, uPVC is rigid, weather-resistant and exceptionally energy efficient, making it ideal for New Zealand homes.Fenestra uPVC windows combine advanced European engineering with high-performance double glazing to create warmer, healthier and quieter homes. Unlike traditional timber joinery, uPVC will not rot, warp or require regular painting, making it an excellent long-term investment for West Coast homeowners looking to improve comfort and reduce maintenance.

Are uPVC windows better than aluminium?

Both aluminium and uPVC are excellent window materials, but they offer different benefits depending on your priorities.For homeowners focused on improving warmth and reducing condensation, uPVC generally provides superior thermal insulation because the frame itself is a natural insulator. This helps reduce heat transfer, making homes warmer during winter and more energy efficient throughout the year.Modern thermally broken aluminium windows have significantly improved thermal performance, but uPVC typically offers even greater insulation. Fenestra uPVC systems also provide excellent acoustic performance, helping reduce outside noise while creating a quieter, more comfortable living environment.

Can I retrofit uPVC windows without replacing my weatherboards?

In many cases, yes.Retrofitting allows existing windows to be removed and replaced with modern Fenestra uPVC joinery while retaining much of your home's existing structure. Every home is different, so Ken Drummond Builders will assess your existing joinery, framing and weatherboards before recommending the best approach.Older villas, weatherboard homes, Lockwood homes and many timber-framed houses throughout the West Coast can often be successfully retrofitted without requiring a complete exterior rebuild. Where repairs or alterations are needed, they can usually be incorporated into the installation process.

Can I replace one window at a time?

Absolutely.Many homeowners choose to replace windows in stages to suit their budget or renovation plans. You may begin with the coldest bedrooms, the living area or windows experiencing the most condensation before completing the remainder of your home later.Whether you're replacing one window or undertaking a complete retrofit, Ken Drummond Builders can help develop a staged approach that suits both your home and your budget.

How much does retrofitting uPVC windows cost?

Every retrofit project is different, so there is no one-size-fits-all price.The overall cost depends on factors including:The number of windows being replacedWindow sizes and stylesDouble or specialty glazing optionsExisting building constructionAccess requirementsAny associated building or finishing workFollowing a site visit, Ken Drummond Builders provides a detailed quotation tailored to your home, ensuring you understand exactly what is included before work begins.

How long does installation take?

Installation time depends on the size and complexity of your project.For many homes, individual window replacements can often be completed within a day, while full-home retrofits generally take several days. Larger renovations or architectural projects may take longer depending on the scope of work.Ken Drummond Builders carefully plans each installation to minimise disruption and ensure your home remains weather-tight throughout the process.

Can I still live in my home during the retrofit?

In most cases, yes.Most homeowners continue living in their home while window replacements are completed. Work is generally carried out one area at a time, allowing rooms to be secured and protected as each installation progresses.Ken Drummond Builders works efficiently to minimise disruption while maintaining a clean and safe worksite throughout your renovation.

Will my house be warmer?

One of the biggest improvements homeowners notice after installing Fenestra uPVC windows is a warmer, more comfortable home.Older single-glazed or ageing aluminium windows can allow significant heat loss during winter. Modern double-glazed uPVC windows help retain warmth inside your home, improving thermal performance and reducing the demand on heating systems.Many West Coast homeowners also notice reduced draughts, improved indoor comfort and lower heating costs following a retrofit.

Do uPVC windows reduce condensation?

Yes — reducing condensation is one of the main reasons many homeowners choose uPVC windows.Condensation occurs when warm indoor air meets a cold surface. Because uPVC frames are highly thermally efficient, they remain warmer than traditional aluminium frames, helping reduce the conditions that lead to condensation.While good ventilation remains important, replacing older windows with high-performance double-glazed uPVC systems can significantly reduce condensation, helping create a healthier indoor environment and lowering the risk of mould growth.

Are Green Home Loans available?

Many New Zealand banks offer Green Home Loans or renovation finance for eligible energy-efficiency improvements, although lending criteria differ between providers.Because upgrading to high-performance windows can improve your home's thermal efficiency, your retrofit project may be eligible for green lending or renovation finance. We recommend speaking with your bank or mortgage adviser to determine what options are available for your circumstances.Ken Drummond Builders is happy to provide quotations and supporting documentation if required for your finance application.

Do new windows increase the value of my home?

For many homeowners, upgrading to premium uPVC windows is an investment in both comfort and long-term property value.Modern double-glazed windows improve street appeal, energy efficiency, thermal comfort and overall presentation — all features that are increasingly attractive to prospective buyers. They can also reduce ongoing maintenance compared with older timber joinery.While every property's value is influenced by a range of factors and no increase can be guaranteed, quality window upgrades are widely recognised as a worthwhile improvement that enhances the appeal and liveability of a home.

Still have questions about retrofitting your West Coast home?

Every home is different. Whether you're renovating a character villa, Lockwood home, bach or family home, Ken Drummond Builders can provide honest advice on the best Fenestra uPVC window solution for your West Coast property.

Get a Retrofit Quote

We are Installing uPVC Windows, throughout Greymouth, Hokitika, Lake Brunner, Moana, Runanga, Reefton, Kumara, Punakaiki and surrounding West Coast communities.

Ken Drummond, Master Builder, Lake Brunner

FENESTRA uPVC

Upgrade Your Home with Fenestra uPVC Windows

Energy Efficient

15 Year Warrenty

Warmer Homes

Healthier Living

Reduced Condensation