Factors involved with the sustained performance of your aluminium joinery
Design being the architectural plan or the look and overall effect you want to achieve as well as taking into account the structural limits of the build.
Brand being the franchise or independent manufacturer you choose (not all brands are
Suite being the manufacturers options i.e. commercial, domestic, semi commercial etc most manufacturers have a range of suites to meet your every need, although care must be taken in choosing the suite that best suits your design, compliance, wind conditions, sound requirements and insulation needs
Hardware being the items that your doors or windows, open, fold , secures or slide on; examples would catches, hinges, rollers locksets
Heating and insulation issues
in your home
The hinges that your casement or awning window opens on have an approximate lifespan of 15 years. When the hinges / friction hinges fail they will fail in one of two ways either the window will become very stiff and often the catch will break in the attempt to open the window, or the hinges will do the opposite and the window will fly open on its own without stopping in any position. Both conditions are as bad as each other. Stiff means snap and the window can fall out. Loose and the wind can catch the window and cause the same fault. The hinges are not repairable they have for pivot points each side and your window relies on the friction loading on the pivots to be equal, uneven opening of a window can occur that’s to say one side opens faster than the other this can cause the glass to break. Often the incorrect installation of security items such as restrictor products for security can cause uneven opening of the window.
Windows not sitting
square in the frame
This is a hinge issue normally, but not always. Many clients have told of the installation of expensive air conditioning then turned it off due to the high energy cost and installed roof insulation (a fine idea and never a bad thing) then installed underfloor insulation (also obviously a good thing) then after all that found only a small difference in their heating bill. Close inspection of the windows often find gaps of between 5-10mm as hot air rises and tends to rotor around the walls. This gap at the top of the window is in the perfect place to allow all the hot air out side.
Many a homeowner has finally solved this annoying dilemma and finally been able to make use of their air conditioning, with our help.
Temperature differences, humidity and drafts.
First I will deal with drafts because I personally find them the most annoying. Doors (to the exterior), ranch sliders, bi-folds, French doors all rely on a seal. The way this is generally achieved is with a felt or a rubber like strip that is normally seen around the internal frame if the door is open. Often this is missing or due to exposure to the sun (uv) its shrink so as not to make contact with the door when its closed. Unfortunately this strip or felt is installed when the door is manufactured, we have a guaranteed system and tools for replacing these felts/strips. Humidity can be of great concern, uncomfortable and not good for the health or your belongings. if you see weeping windows or water on the still……you have an issue. Depending on the severity and the age type of your joinery there are a number of after market products designed for your joinery that can solve this problem with out the need for expensive dehumidifiers or roof ventilator systems, all of which we supply and install. Using similar products temperature differences within your house can also be addressed.
Hinges And Stays
What they are…
Hinges are vital to the operation of all opening sashes and doors. If they are not well-engineered, they may not hold the opening panel accurately in the frame and other fittings, such as locks and catches, may not locate or connect accurately.
Friction stays are often used in place of hinges on awning and casement windows, as they conveniently combine the function of hingeing and holding the panel in the desired position, without the need for additional casement stays.
The number of hinges required on a particular door is usually related to the size and weight of the door, with three hinges being the usual minimum, and four or more hinges common. Hinges can be colour-matched to your joinery and are available in a variety of materials, offering corrosion resistance and different service life characteristics.
It is recommended that you obtain the manufacturer’s specific instructions regarding regular maintenance of their hinges and stays.
It is best to buy high quality hinges and stays at the time of purchasing the joinery. The advantages are that you will be offered hinges that are designed for the framing they are to be fitted to, and they will be factory aligned to operate without undue wear, thus ensuring trouble-free service.
Hinges and friction stays have to be durable and be able to withstand attack from burglars. Style and good looks can be achieved, with the best quality products offering a wide variety of styles and finishes. Unfortunately, some inferior products also look great but perform miserably in service. The best quality products can be identified by choosing those that carry the WANZ Compliance label.
A product carrying the WANZ Compliance label means that it has been tested to strict criteria that include:
- Long life cycle testing simulating real life use
- Durability of the parts
- Resistance to physical attack
- Resistance to corrosion
- Wear resistance of the surface finish
Ranch Sliders, Stacking Sliders, Bi-parting Sliders
All the above rely on a roller system of some description, many roller systems have been developed over the last twenty years. The quality of the wheel itself, the design and quality of the Carriage, how well the cavity and track have been cleaned all are contributing factors in how long the door continues to function.
When the door begins to fail it will be hard to open, bump when opening or make horrific noises, if this continues the wheel will collapse. A slider in bad condition will still open with noises and or force. But if the wheel collapses or the Carriage that supports the wheel fails the slider will make contact with the door Track once the track is damaged it’s not just rollers that need to be replaced. New wheels on a bad track spell waste of money!. The door may roll but its temporary, because the wheels are soft, they are doomed on this damaged track.by the time the ink its dry on the cheque you wrote the wheels will fail again.
Do not believe anyone who says the track can not be replaced, even if its part of the frame we have a guaranteed process to remove and replace this track. This is of paramount importance when you wish to retain the same joinery as the rest of your windows etc, when you don’t wish to upgrade to brand new joinery, when the cavity the door is in doesn’t meet code/compliance if removed and when a budget is in place for the property.
If there is nothing wrong with your door except the track and rollers…
What are they?
Catches are those items that allow opening items, such as window sashes, to be fastened in the shut position, usually without a keyed lock. Be careful not to confuse catches, latches and locks when communicating your needs. Factory-fitted catches are the best choice because only products that work well with the window design will be offered to you. Assess the security risk of windows that have catches to determine if they should be lockable. It is cheaper to fit the right choice of catch from the outset, rather than replace ordinary catches with lockable catches later.
Some catches provide “double tongues” allowing the window to be held in the slightly open position thereby providing ventilation. Please note the double tongue option should not be used as a security device. It is not recommended to leave the windows on the double tongue whilst the premises are unattended.
Catches are available in a wide variety of materials, including engineering plastics and metals, and may be colour matched to your joinery. Secure attachment to the joinery is essential and can be achieved using properly sized fastenings. Accurate positioning of the catches at the specified frame points is important for optimum performance of the sash as determined in the window-testing laboratory.
Often catches are required in positions that are difficult to access, eg just out of comfortable reach or, high up in the ceiling area. If this is the case, ask for remote control mechanisms that make them easy to use. Options are available whereby one lever operates all the catches on a sash or door.
Catches have to be durable and it is desirable that they withstand attack from burglars. Style and good looks are important, with a wide choice of styles and finishes available in the best quality products. Unfortunately, some inferior products also look great but perform miserably in service. You can know which are the good quality products by choosing those that carry the WANZ Compliance label.
A product carrying the WANZ compliance label means that it has been tested to strict criteria that include:
- Long life cycle testing simulating real life use
- Durability of the parts
- Resistance to physical attack
- Resistance to “picking” of the lock (if lockable)
- Resistance to corrosion
- Wear resistance of the surface finish
What is a
A Flashing is the name of a purpose made building component that is intended to capture and drain or deflect water back outside of the cladding system.
Although flashings are one of the smaller building components, they are vitally important making them one of the best investments in your entire building!
Flashings typically occur at junctions where building materials join. Some flashings are very obvious and they may be a defining feature of a building – such as the capping along the ridge of a roof, or a parapet. Other flashings may be less noticeable, being mostly hidden within the construction, but they are just as important!
There are numerous parts of a building that may require flashing. Because of the unique demands of each situation, flashings should be specifically designed for the particular circumstances of each location.
The principle of flashing is easy to understand, but the designing, manufacturing and installing a particular flashing may not be so simple.
The New Zealand Building Code has acceptable flashing designs and material specifications for most situations. Refer to NZBC Clause E2/AS1 (4th edition) section 4.0 (and other references within that document). The flashings should be chosen and specified by the Licensed Building Practitioner building designer who is assigned that responsibility by law.
Everything in one package
WANZ Window and Door Manufacturers provide flashings that are designed to work with the windows and door you select, and importantly are colour matched and delivered to site as one package. You simply order the windows, doors and the installation materials from the WANZ Window Manufacturer at the same time so that everything is made to fit together.
Flashings as a building material
WANZ flashing manufacturers can also provide “specials” which are made to order and provide the ultimate in design flexibility. Flashing manufacturers also routinely manufacture the standard NZBC designs.
The New Zealand Building Code encourages innovation and there are several patented “Alternative Solutions” available from WANZ members. These are proprietary products developed and tested by the member concerned. Any new complete window installation flashing system will need to be verified with IANZ accredited laboratory tests to NZBC E2/VM1 for cavity claddings or AS 4284 for direct fix systems.
Installation fixings are those components that attach the windows and doors to the structure of the building. They are vital structural connections and must be properly specified for satisfactory long-term service of the joinery units.
Installation fixings must:
• Be tested and certified to endure the same forces that will be applied to the finished wall system.
• Have a life span exceeding that of the window or door it supports.
• Be non-corrosive in the installed environment.
• Be compatible with the materials it is in contact with.
• Not compromise other building components.
• Enable accurate positioning of the joinery unit.
• Provide absolute rigidity of the installed joinery unit.
Benefits of Installation Fixings to installers, builders and homeowners include:
- Fast and easy to use resulting in less labour.
- Wall linings will maintain their shape.
- Weather-tightness aspects of the window installation will not be affected.
- Appearance of show wood reveals will not be damaged.
- Enhanced security of the joinery units during the construction phase.
Locks and Locksets
The best time to evaluate the security of your building is when specifying your joinery. Factory-fitted locksets are the best choice because only products that work well with the window design will be offered to you. Locksets are units that combine the door latching device and the locking device in one convenient unit.
Locksets must engage tightly with the joinery, therefore design interface is critical. Fixing points must have good anchorage and resistance to rotational stresses. In normal use locksets can be subjected to substantial loads putting severe strain on the mechanism. Under attack from burglars, the loads are extreme and the mechanism should not break, bend, or give way to allow burglars entry.
Good quality locksets don’t have to be ugly! Style and good looks can be achieved with the best quality products offering a wide variety of styles and finishes . Unfortunately, some inferior products also look great but perform miserably in service.
The best quality products can be identified by choosing those that carry the WANZ Compliance label. A product carrying the WANZ Compliance label means that it has been tested to strict criteria that include:
• Long life cycle testing simulating real life use
• Durability of the parts
• Resistance to physical attack
• Resistance to “picking” of the lock
• Resistance to corrosion
• Wear resistance of the surface finish
The Industry is currently developing new standards for locks and locksets. We will post the specification reference when complete.
By selecting an energy-efficient window, combined with good passive design principles, you can build a sustainable home that requires less energy to heat or cool a home. Louvre windows are a great option as they open up twice as wide as regular windows to maximise the flow of natural ventilation when strategically placed throughout the house.
The amount of airflow entering the building from a Louvre window can be controlled either manually or remotely. Automated louvres can be connected to a building management system to help control the performance of the building based on current weather conditions, the time of day or even the season. This is a perfect way for efficiently purging a building of warm, stale air and allowing fresh breezes to flow in and keep the building at a comfortable temperature. Tall, narrow louvres installed next to fixed glass panels are a perfect example for maximising your view while enjoying the benefits of fresh air at any time of day.
Louvres can also be installed on internal walls to further assist with natural airflow throughout the home. Using solid blade options, internal louvres function as walls when in the fully closed position, and create the feeling of spaciousness and more natural light when partially or fully open. The quality of indoor air is significantly improved, whist reducing condensation and the build-up of mould to ensure a healthy living environment all year round.
It is also important that your louvre windows seal tight in the closed position to ensure wind and rain are excluded in bad weather conditions. This is a critical requirement to look for when choosing which louvres to install. The sealing performance is measured as a Pascal rating. Examine the manufacturer’s claims and select ratings that match the requirements of your particular location. Your local authority building inspector can tell you what the minimum rating should be.
When selecting the right louvre window for your needs, consider the following:
• Ensure your louvres have been tested to New Zealand Standard NZS 4211:2008.
• Source louvres with non-corrosive materials to ensure they will stand the test of time.
• Choose energy rated louvres to suit all climatic conditions and provide the best performance possible.
• Look for an extensive colour range so you can match your louvres to your internal and external furnishings.
• Seek a variety of blade options: Use glass blades to enjoy scenic views while still maintaining a sense of spaciousness and to enjoy warm sunshine on cold winter days. Use timber or aluminium blades for to provide privacy yet still allow natural ventilation into the home.
• Automate your louvres and effortlessly control a comfortable level of ventilation into your home at any time of day.
• Screen your louvres or install bars or key lock systems to suit your individual requirements.
Doors and windows that open and close by a sideways movement usually depend on roller bearing components to provide the smooth action required.
There are two main types: overhead track systems and base mounted systems. The weight of the joinery unit supported on the roller bearings dictates what bearing unit should be used.
It is best to buy high quality roller bearings at the time of purchasing the joinery. The advantages are that you will be offered rollers that are designed for the unit they are fitted into and they will be factory aligned to operate without undue wear, ensuring trouble-free service.
Upgrading rollers later may be difficult, especially if the fixing points are different to the original.
Consider the following when consulting with your supplier:
• How long will these rollers last?
• Am I being offered the best option or just the cheapest price?
• How much maintenance does this option require?
• Are there other ways to achieve the same result?
• Are replacement parts available and are they easy to fit?
• Do the rollers comply with the WANZ Voluntary Standards for Components used in Window Systems
Sealants and Adhesives
Sealants & Adhesives
Almost no part of our modern world is untouched by the technology offered by the Sealants and Adhesives industry and windows and doors are no exception.
However, advanced technology also means correctly specifying the best-suited products for the application they were designed for.
The New Zealand window industry selects and tests sealants and adhesives in the application they are intended to be used. This will ensure continued performance at an acceptable standard after many years of demanding service. As the formulas of the products change, there is a constant updating of technologies and laboratory testing to ensure that the products still work together as intended.
Each WANZ member window system manufacturer has access to the specifications and laboratory testing. This ensures that the appropriate products are being used in manufacturing processes and that customers receive the correct installation products supplied with their windows.
Sealants and adhesives can vary to a great extent in quality and, like paint; you can’t tell what is inside the can. Therefore, Specifications are your most reliable guide.
Screws & Fasteners
Your windows and doors may contain lots of screws, rivets and specialty fasteners to keep components, such as locks and hinges, properly fitted.
Fasteners need to be:
- Strong enough for the job that they have to do. Depending on the fixing requirements, fasteners generally work by clamping items together and by resisting sheer (sideways) loads.
- Correctly sized, including the right length, diameter and thread design.
- Compatible with all the materials that they come into contact with.
- Properly fitted, including preparation for positioning the fastening, and correctly tensioned.
- Non-corrosive so as not to cause failure or detract from the good looks.
- Well made without rough edges – if you can see them they need to be smooth, look good, and, if coloured, matched to the surrounds.
- Industry standard sizes so you can get an exact replacement if needed.
- If they are manufactured to WANZ Standards, they will carry the WANZ Component Supplier Mark and be guaranteed by the component supplier.
Timber Accessories for Aluminium Joinery
Timber accessories may be functional or purely aesthetic.
When used in the right places they can enhance the appearance of the aluminium joinery or create privacy.
Enjoy all the advantages of aluminium windows on the outside, while enjoying the classic look of handcrafted natural timber on the inside. Choose from an extensive range of the latest high performance “composite” windows that offer all the advantages of modern technology with the charm of traditional architecture.
Consider a natural timber door for special locations where you want to make a stunning architectural statement. A clear finish polyurethane displays all the natural beauty of traditional timbers which have been carefully selected and matched to your requirements. Timber doors perform best in sheltered locations under verandahs or porticos away from the extremes of the harsh weather. All exterior door units must comply with NZS4211 performance requirements windows and doors.
Select natural timber vents for adding special character to your home. They can be just for decoration or be both decorative and functional. They are commonly used for ventilating roof spaces on gable ends. It is important that they are designed and installed to keep water outside of the building.
A popular item in warmer locations, providing exceptional cooling to the interior. They are available with closed blades or fixed open blades and they may have adjustable aerofoil shaped blades or timber blades that will fit into glass louvre carriers. Always specify and make sure louvres carry the NZS4211 compliance labels.<
Coordinate your landscape and architecture with timber screens to create privacy and shelter and strong street appeal.
Timber shutters fixed onto the outside walls beside windows are usually decorative, but they are available in hinged and sliding options to provide a traditional method of security.
Timber blinds allow an excellent mix of light and privacy options. When you have them purpose made, you can mix and match the specifications to exactly what you want.
Window and Door Reveals
The surround of a door or a window, of which the bottom member forms the ledge on which you may choose to place an item such as an ornament, is technically referred to as the “reveal” or “liner”. These words are used interchangeably.The surround of a door or a window, of which the bottom member forms the ledge on which you may choose to place an item such as an ornament, is technically referred to as the “reveal” or “liner”. These words are used interchangeably.
The reveals can be made from a variety of materials, the type and colour is a matter of personal preference.
Reveals are usually structural members as they perform the function of securing the window or door to the structure of the building.
There are two common methods of fixing the reveals to the building structure, namely traditional nailing right through the reveal into the building structure, or the use of hidden installation brackets.
Traditional nailing leaves hammer and punch marks that can later be covered up by fillers, sanding and painting.
However, if you choose a natural timber show-wood finish, or a factory-finished material, then use of hidden installation brackets to preserve the unspoilt beauty of the material is worthy of consideration.
Passive Background Ventilation
Frequently Asked Questions
Ventilation is essential to healthy living. Fresh air is good for us and it is also very good for the health of our buildings. This section focuses on ventilation systems in houses that cost nothing to operate. The same principles apply to other buildings.
Passive Background Ventilation FAQ
Frequently asked questions:
Multi level, sunny and exposed: A home which falls into this category will have few, if any, condensation problems. Natural convection will assist internal air movement while the sun will warm the air and wind pressure will allow fresh air to enter the home through any openings available. A few vents distributed strategically around the home will suffice.
Single level, shady and sheltered: A home in this category will be prone to serious condensation problems, and will require the full recommended minimum number of vents. In addition mechanical extraction of moisture at source in kitchens, bathrooms and laundries will be required.
Avoiding condensation is therefore a combination of heat and ventilation. The internal temperature of the home needs to be at least five to seven degrees warmer than the external temperature.