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Questions and answers


Q: What is PVC-U?


A: PVC-U is Unplasticized Polyvinyl Chloride or rigid PVC. Pure PVC-U is not quite suitable for window and door profiles. Stabilisers and additives are required, the mix of which vary between different manufacturers of profiles for window and door system for different weather conditions such as temperature and UV level.


Q: What is the difference between PVC-U and PVCU or uPVC?


A: There is no difference. They all stand for Unplasticized Polyvinyl Chloride.


Q: Where are your windows and doors manufactured?

A: Homerit PVC-U windows and doors are manufactured in our factory in Auckland.


Q: Where is multi-point locking hardware of your windows and doors from?

A: We use German made multi-point locking PVC-U windows and doors hardware. Our suppliers are Siegenia and Roto .


Q: I am from the UK and I have been put off by many NZ’s for PVC-U windows because of high UV weather condition. How do your products or other products perform in high UV?

A: UV stability is most important and critical for PVC-U windows and doors in New Zealand. Unfortunately there is no regulation in New Zealand and anyone can import PVC-U windows or profiles.  Some businesses failed tests but still sell their products.


We took UV stability and durability seriously. We choose VEKA profiles because of its superior quality and UV stability although the price is more than double some other profiles in the market. Our Premium Series PVC-U windows and doors made of VEKA profiles are the only BRANZ appraised PVC-U joinery system. Several others applied for BRANZ appraisal but could not get through.


Our ASA-PVC co-extruded windows and doors are durable because ASA is a very UV stable material. For more information about ASA resin visit website www.sabic-ip.com .


Q: What is your product warranty?


A: 15 years for profiles, 1o years for glass, 5 years for German hardware and 5 years for workmanship. 2 years for non-structural components such as rollers, brush seals, hinge covers etc.


Q: My house needs specific design because it is exposed to extreme high wind. Are you windows and doors suitable?


A: Homerit Premium Series PVC-U windows and doors are appraised for use for buildings situated in building wind zones up to and include “very high”. If your project is exposed to even higher wind pressure we need to work with your engineer to check your window and door schedule. For some window designs additional reinforcements and/or design changes might be required to meet window performance requirements under the site specific high wind.


Q: What challenge are you facing?


A: The biggest challenge is that we are operating in a market without relevant standard and/or regulation.


Several other businesses did BRANZ appraisal for their PVC-U windows without success. There were case that PVC-U profiles failed UV testing but still claimed high UV resistance. Some businesses even make false claims regarding quality, performance or where profile and hardware come from.


Q: Are your windows and doors glazed in the factory?


A: Normally not. Double glazed windows and doors are heavy. When glazed they are difficult to transport and install. Normally only the window and door frames are transported from our factory to the building site. Glass will be sent to site from our glass supplier without delivery charge.


Q: Do you make double glazing yourselves?


A: No we don’t. We buy glass from top quality glass supplier which provides 10 years performance warranty for double glazing to our customers. Our glass supplier makes double glazing to EN1279 standards. There are window manufacturers making double glazing themselves using hand tools. Poor quality double glazing may have condensation inside the two glass panels in several years’ time. Ask your window supplier where they get double glazing for your windows.


Q: What glass options can I have?


A: You have a lot of options such as obscured glass, low E, double low E, triple glazing, argon filled, laminated, thermal spacer and colonial bars inside double glazing. For more information click here .


Q: When will the glass be delivered?


A: Glass can be delivered on the day that frames are installed and ready for site glazing. Customers can communicate with us to arrange delivery date. Our glass supplier normally needs 3 to 4 days’ notice.


Q: Can your windows and doors be glazed in the factory?


A: Yes. If glazed in factory sashes may need to be taken out of the frames to reduce the weight for easier handling. Please discuss with us if you need the windows and doors glazed in the factory.


Q: Can my builder install your windows?


A: Yes, competent builders can install Homerit PVC-U windows and doors following installation guides.

Q: Can my builder glaze your windows?


A: Normally your builder does not know how to glaze the windows. You may need to ask a glazier to do it. You need to provide our installation guide which includes glazing to the glazier and ask the glazier to read the instruction. We have found that some glaziers which do not pack the glass in the right way which affects the function of the windows and doors.


Q: Any difference in installation between your products and typical aluminum windows and doors?


A: There isn’t much difference. Standard Homerit PVC-U windows and doors have flanges and timber jambliners pre-fitted. Installation is fixing the timber jambliners to the building structure – the same as aluminum windows and doors.


There is a difference. PVC-U door bottom frames are normally rebated into slabs. Because of profile size differences rebate details are different. Normally more rebate is needed for Homerit PVC-U doors because our PVC-U frame profiles are quite big. Rebate details for different types of doors are available on request. We suggest you and your builder read the rebate details before construction/installation.


Q: How do I prepare timber building structures e. g. sill tapes and detail taps for installing your products?


A: The preparation requirement for timber building structure is the same as installing aluminum windows.


Q: Do I need sill support for Homerit PVC-U windows and doors?


A: Aluminium windows have no support under the frames for cavity construction. Sill support is used to take the weight of the windows. Homerit PVC-U windows have timber reveal liners pre-fitted around the windows. Timber reveal liners are beneath the bottom PVC-U window frames and screwed into steel reinforcements inside the PVC-U window frames. The weights of the windows are therefore well taken by the reveal liners so there is no need of sill support for Homerit PVC-U windows.


Homerit PVC-U doors are normally rebated and have no timber jambliners at the bottom. Bottom PVC-U door frames must be supported to take the weight of the doors. Sill support or angle should be installed if there is no building structure underneath the PVC-U door frames.


Q: How about flashing for your windows and doors?


A: Generally the flashing requirement is the same as for aluminum windows and doors. For details refer to installation guide.


Q: Do you supply flashing?


A: We can supply aluminum flashing on request. Head and/or sill flashing are not included in standard quotation. For some projects there may be no head flashing for example precast wall or brick veneers. Most of our customers arrange flashing by themselves. If you need us to supply flashing please advise us.

Q: How big is the gap in double glazing in your windows?

A: Normally the gap is 12mm or 14mm. Depending on window and door style and the thickness of glass the gap in double glazing can be different. By using smaller glazing beads it is possible to have triple glazing (total glass thickness 28mm) for most type of windows and doors in our systems.


Q: Can I paint the PVC-U windows?


A: You do not need to paint Homerit PVC-U windows and doors. If you do want you can paint. Some paints bound well but some don’t. We suggest you contact us and discuss.


Q: What is ASA-PVC co-extruded profile?


A: ASA is a ternary polymer which is composed by Acrylonitile, Styrene and Acrylate. ASA can not only resist degradation, ageing and color deterioration but also reduce the decomposition or color changing caused by the high temperature. PVC is Unplasticized Polyvinyl Chloride.


ASA-PVC co-extrusion technology was developed by GE-Plastic which extrudes color ASA and white PVC-U together in a special designed die. Only 0.2 to 0.3mm thick thin layer of ASA is bounded on the outside surface of white PVC-U profile. This is a cost effective solution to achieve high UV stability and color options because the amount of very high cost ASA material used is not much.


Q: Why are your colored ASA-PVC co-extruded profiles are cheaper than your white VEKA PVC-U profiles?


A: The white PVC-U profiles are made by VEKA according to German standard. The ASA-PVC co-extruded color profiles are made by Zhongcai according to Chinese national standard. Although ASA is expensive the ASA-PVC co-extruded profiles have only 0.2mm to 0.3mm thick ASA on the outside surface of the main PVC-U white profile.


Q: Do you have white color ASA-PVC co-extruded profiles?


A: Unfortunately that is not available.

Q: What colors are available in your ASA-PVC co-extruded profiles?


A: Currently we provide Charcoal and Light Grey two ASA-PVC colors. There are 11 color options available in our profile supplier.


Q: What color should I use to match your window colors?

A: VEKA white profile is similar to Arctic White. ASA Charcoal is similar to Grey Friars or Piha. ASA Light Grey is similar to Gull Grey & Smokey or Kawakawa Half.


Q: ASA-PVC co-extruded profiles have color options and cost lower than VEKA white PVC-U profile. Why you use VEKA white PVC-U profiles?

A: The VEKA white PVC-U profile system is a premium quality and large range system. For some window and door designs only VEKA profile system can meet the design and/or performance requirements.

Q: How wide and how thick is your frames?


A: Generally our PVC-U profiles are quite big comparing with typical aluminium window profiles. Our Premium Series white PVC-U casement window frames are 58mm thick, 55mm or 67mm wide. Our Lifestyle Series color ASA-PVC co-extrusion casement window frames are 60mm thick, 58mm or 67mm wide. The big size frames make the glass area and window/door opening smaller.


Q: Are your windows and doors 100% condensation free?


A: No. Condensation is caused when air of a warmer temperature comes in contact with a surface of a cooler temperature. PVC-U window frames are very good heat insulator which can dramatically reduce the possibility of condensation on window frames, condensation may still form on glass. Click here for more details.


Q: Can I have Marcracarpa or Rimu jambliners?


A: We can get Marcrocarpa but it will be hard to get Rimu.


Q: Can you do triple glazing?


A: Yes, we can do triple glazing but there are some restrictions for glass size and window and door types because of heavy weight and thickness of the triple glazing.

Q: What is R value of windows?


A: R-value is a measure of resistance to heat loss. The higher the R-value the better the insulation.


Q: Is New Zealand window insulation requirement high in the world?


A: No. New Zealand window insulation requirement is very low. Minimum R value is 0.26 in New Zealand. Minimum R value is 0.50 in the UK and 0.58 in Germany. Standard double glazed aluminum windows can’t be used in the UK or Germany because insulation requirements in those countries can’t be met.

Q: I have tight budget. What you can do to reduce the cost of the windows and doors?


A: There are several things you shall consider. (1) Lifestyle series color ASA-PVC windows and doors are cheaper than Premium series white PVC-U windows and doors. (2) If the building is solid wall such as precast or block you may choose no flanges and no jambliners which can save some cost. (3) Some design changes can also save cost, for example less openings less cost, tiny windows cost more than good size windows. For more information visit Meet budget .


Q: Are your hardware made of stainless steel?


A: Not necessarily. Friction stays, safety stays for awning windows are stainless steel. But the multi-point locking hardware is not all made of stainless steel.


Q: My house is at seafront. Is your window frame and hardware ok?


A: Homerit PVC-U window frames have no problem for building at seafront.


The high corrosion resistant hardware can be used at seafront but need regular maintenance – open the window or door often and wipe the hardware using a wet cloth every three months. One of our customers reported the hardware corrosion problem in his house at seafront. We visited and found that the hardware that had corrosion were in the windows and doors that were closed for a couple of years while the other windows and doors open often had no problem,


Q: How is your PVC-U windows connected at corners?


A: Homerit PVC-U windows and doors are fusion welded at corners.


Q: Can I have multi point locking for sliding windows and doors?


A: Yes you can. Sliding doors have got 4 locking points. Sliding windows may have 2 or 3 locking points depending on the dimension.


Q: Can I have opening windows in fixed panels of sliding or stacker doors?


A: Yes you can.


Q: Can I have white profile in your ASA-PVC co-extruded lifestyle series?


A: No. Currently white ASA-PVC co-extruded profiles are not available.

Q: Are your steel reinforcements treated?


A: Yes. The steel reinforcements are hot dip galvanised.


Q: Should “Homerit” be pronounced as /’homƐrit/ or /’hom.rait/ ?


A: Homerit comes from two words – home and merit.  Homerit shall be pronounced as /’homƐrit/.