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EVS Retro Glazing

Fast and simple to fit, triple glazing for character windows. 

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Retro glazing your home shouldn't be expensive!

The benefits of retro glazing your home are huge, but there have only been two choices, cheap but temporary or costly permanent solutions. Now there is a new EVS choice.

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Great Preformance

EVS is a high glazing system that preforms well across every level, from leading thermal insulation values to enhanced durability that protects your existing timber framed windows.

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Simple Application

EVS glazing a simple process that makes installation quick and easy, saving time and money on your retro glazing project. Home owners can save even more by DIY installation.

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Retain Character

EVS maintains the character of homes that have beautiful features such as delicate astragals, coloured glass and leadlight windows. See how different home owners have upgraded their homes with before and after images to compare.

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Fights Moisture

Condensation is the most damaging aspect of single glazing because of the unhealthy dangers of mold and the destruction caused by rot. EVS eliminates over 90% of your window condensation making for a healthier, warmer home.

All new glazing technology that makes retro-glazing affordable!

Now there is another option for retro glazing that delivers better value!

The secret to achieving high performance at more affordable prices, is by retaining the existing glazing which reduces installation costs and increases the glazing cavity for extra insulation.

Unique EVS Technology allows windows to breath, removing moisture to maintain warm and dry windows and provide protection against damaging condensation and mould.

EVS Retro Glazing provides greater protection to older character windows that are exposed to the elements by providing a durable protective uPVC cover frame with integrated double seals that prevent moisture reaching the old putty and glass. This uPVC wont rot and can be painted to blend into the existing colour scheme, adding to the character detail of the original windows.

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All new Patent Pending Technology
EVS
is a totally new glazing system that is designed to fit externally to existing timber windows. EVS’s unique patent pending technology allows trapped moisture to be vented, while providing increased thermal insulation and protection. EVS has the performance of triple glazing but at more economical prices than double glazing. Installation is a lot quicker and easier than traditional retro fitting double glazing to timber windows, which saves money and time.

PVCu insulation and protection
The latest EVS profiles are made from PVCu which can be painted to match your existing timber paint finish. The PVCu profiles provide increased weather protection to the vulnerable putty edges as well as increased the thermal layers to reduce heat loss. The attractive EVS profile adds further character to your existing timber frames.  

  1. DRYER WINDOWS
     
    EVS Glazing stops condensation on windows that causes mould and rot. EVS x 3 has a triple layer of protection that stops moist inside air hitting the cold outside glass and preventing the dew point condensation forming.
  2. WARMER WINDOWS
     
    Old single glazed windows allow heat from the inside to escape. EVS Glazing units provide single or double air spaces to reduce heat loss and maintain warmer windows .
  3. NOISE REDUCTION
    Noise can travel through single and double glazing, however EVS offers increased noise protection with a third layer of Plexiglas situated between the inside and outside layer of glass.
  4. MORE AFFORDABLE
    EVS Glazing is a faster and easier product to install which reduces the time and cost. This provides customers with more affordable glazing options compared to retro fitting double glazing.
  5. EXTRA PROTECTION
    EVS is made from PVC-u which is a very robust rot free material. The PVC-u Glazing unit is fixed over old timber and seals off most of the exposed timber and old putty, preventing future degradation and leaks .
  6. ECO-FRIENDLY
    EVS utilizes your existing glass and timber frames so you don’t have to destroy your existing windows or replace the glass that would otherwise be sent to land fills .
  7. ATTRACTIVE
    EVS is not visible from your inside view and is an added detail to the outside. EVS can be easily painted and will blend into the existing style of your timber windows making your windows appear smart and new, while retaining their original character .

EVS High Performance Retro Glazing

Higher performance EVS means less heat loss with warmer dryer windows 

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Heat Camera demonstrates heat loss.

These images show the heat map from the EVSx3 fixed to the bottom windows and the single glazing along the top windows. The red colour indicates higher heat loss and the yellow indicates better insulation with less heat loss. The EVSx3 panels maintain a similar temperature to the surrounding timber frames, demonstrating how effective EVSx3 is at providing a high performing thermal protection. (Just a note about the red on the middle EVSx3 panel, is a reflection of the heat from the photographer, not heat loss from within the home)

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Temperature Comparison Test

Temperature readings from  around a home with different glazing systems. EVSx2 performs well above standard Double Glazing and just below top of the range Xcel glazing. Please note that this test was undertaken by EVS and has not been independently varified. EVS is in the process of getting independent BRANZ testing done, and their results will be made available when they are completed.  

Report -Isothermal Detail Analysis of EVS

Report by BEO LTD (Building Envelope Optimization) 
Read Full (PDF) report

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Timber Single Glazing

This thermal model image shows a typical single glazed timber window with the thermal bridging across the glass. The Insulation ‘R’ value is R0.19. Thermal bridging causes moist warm moist air to condense which can cause the mould and rot. There is no heat loss reduction.

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EVSx2 Double Glazing

This thermal model image shows EVSx2 Double glazing on a timber window with very low thermal bridging. The Insulation ‘R’ value is R0.35. Moist warm moist will not condense on the inside glass because the inside glass is maintained at a warmer than drew point temperature. There is a 52% heat loss reduction.

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EVSx3 Triple Glazing

This thermal model image shows EVSx3 Triple glazing on a timber window with no thermal bridging. The Insulation ‘R’ value is R0.55. Moist warm moist will not condense on the inside glass because the inside glass is maintained at a warmer than drew point temperature . There is a 70% heat loss reduction.

Over 90% reduction in condensation!

These windows were photographed part way through the EVS installation process and record the dramatic improvement of condensation reduction compared to the single glazing panels. Condensation can be totally eliminated by using adequate ventilation systems, but EVS helps to reduce the damaging effects of condensation and moisture from your windows through increased thermal performance.

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EVS product and workmanship 10 Year Guarantee

Your timber windows are vulnerable to the affects of weather particularly around the putty and glass junction. These areas are the first to fail with water and sun acting on these delicate edges and opening up cracks where water can penetrate.

EVS provides a greater level of protection by encapsulating the vulnerable putty edges and keeping water and damp away. EVSx3 goes even further to protect your home from noise, condensation and UV damage with its triple layer defence against the sun and moisture.

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The PVCu frame
The PVCu frame is protected against the damaging rays of the sun by being painted every 15 years. The PVC is rot proof and has a double seal design to block water from getting past the glass edges.

The Glass
The outer surface is glass that will last over 100 years.


The Vents
The unique patent pending vent system provides a on-going cycle that absorbs and releases moisture to maintain a dry cavity and remove fog and condensation. The special qualities of Bentonite clay inside the vents have a lower moisture release temperature than silicon desiccate found in most other glazing systems. This allows moisture to be released when temperatures are hot and capture moisture when temperatures are cool.

The Plexiglas
The middle layer of Plexiglass provides increased protection from the UV rays as well as noise and increases the thermal efficiency of the window unit. The Plexiglass has a separate 30 year warrantee against yellowing and fading.


10 Year Guarantee
EVS has provided a 10 Year guarantee encase bad workmanship or the product fails in that time frame.

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Join our EVS Sales and Installation Network
  Demand for affordable retro glazing is increasing and EVS is looking to find glazing companies from around New Zealand to provide installation services to our unique range of retro glazing products and services.
Installing EVS is a quick and simple process that allows your business to offer retro glazing services at more competitive prices. EVS will train and support your team with software and product installation.  
Find out More 

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Talk to us about your Retro Glazing project

Phone: +64 (0) 3 455 0957 
Email: info@evsglazing.nz

EVS Head Office 

EVS Glazing Ltd
85 Hillside Road
South Dunedin
New Zealand

Contacts

Phone +64 (0)3 4550957
Email: info@evsglazing.nz
Mobile: +64 (0) 27 4346 912