Cristallo

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You are here : Home » uPVC » System 3 uPVC Windows

System 3 uPVC Windows

system 3 case study

Cristallo’s flush fitting composite casement window has been designed as a modern PVC equivalent of the traditional 100mm wide, flush fitting hardwood timber casement window, enabling you to replace wooden windows with authentic designs in authentic colours but using a maintenance free composite material.

The routine work of replacing windows does not normally require consent from a local authority, especially if it is within the properties permitted
development rights. However there are currently 9000 conservations areas and growing, within England, where local planners have stipulated that replacement windows come under Article 4 directives, which basically means that although the use of modern materials are okay, the design must be similar to the original window.

With the overall dimensions of the window system being based on the timber, this new window means it is possible to satisfy the requirements of local authorities and provide a modern window with a traditional look.

With the overall dimensions of the window system being based on the timber, this new window means it is possible to satisfy the requirements of local authorities and provide a modern window with a traditional look.

Whatever the original pattern of your traditional Georgian window, we can cater to your needs. Custom builds to order allow all variations, such as “four-over-sixes” and “eight-over-eights”, as well as the more traditional “six-over-sixes” in Georgian patterning.

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System 3 PVC Window

Flush fitting casement, outer frame & transom in Oak

General specification

  • High security internally glazed system
  • 28mm double glazed units as standard
  • Options for 44mm triple glazed units
  • Fully mechanically joined system
  • Option for welded sashes
  • Dummy sashes, equal sightlines throughout
  • Available in a range of 13 different colour options
  • Profiles are guaranteed for 10 years
  • Full range of glazing options including leaded panes, Georgian bar or Astragal Georgian bar
  • Trickle vents available in the outer frame or the sashes
  • Full range of traditional or contemporary windows handles
  • Residential and French doors are available open out with a standard PVC threshold or open in with a low aluminium threshold option
  • Please note that the low aluminium threshold is not thermally broken. We have a wide range of PVC door solutions suitable for most applications
  • We do not recommend the use of low aluminium thresholds with French doors
  • Midrails, dummy transoms and mullions are not available for this range of windows/doors
  • We are able to make arched and angled frames using the composite casement profile
  • We are not able to offer tilt and turns, pivot windows, patio doors, bifold doors or vertical sliding windows in this window system

Download the System 3 uPVC Datasheet

The routine work of replacing windows does not normally require consent from a local authority, especially if it is within the properties permitted development rights. However there are currently 9000 conservations areas and growing, within England, where local planners have stipulated that replacement windows come under Article 4 directives, which basically means that although the use of modern materials are ok the design must be similar to the original window.

With the overall dimensions of the window system being based on the timber, this new window means it is possible to satisfy the requirements of local authorities and provide a modern window with a traditional look.

Glazing

system 3 cross hatch

Cross sections of sashes either side of a mullion

  • All internally glazed with dummy sashes throughout and Qlon weather seals
  • Available with 28mm double glazed units giving an overall U-value of 1.2W/m2K
    (Planitherm, super spacer bar, argon and Planilux with a centre pane U-value 1.219W/m2K)
  • Also available with 44mm triple glazed units with an overall frame U-value of 0.8W/m2K
    (Planitherm, super spacer bar, argon and two panes of Planilux with a centre pane Uvalue of 0.976W/m2K)
  • At 0.8W/m2K U-value this meets the latest passive house standards and makes it one of the most thermally efficient windows on the market

Method for fixing mechanically joined frames with dummy sashes

Mechanically jointed sashes have the units bonded in place in order to give increased strength to the sash, we have detailed below an explanation of how to install the frames.

  • system 3 cross hatchAll small to medium sized frames will be delivered with the sashes/dummy sashes preglazed and fitted in position; large frame will be delivered with the sashes/dummy sashes supplied loose due to weight restrictions.
  • All the sashes/dummy sashes are fitted in the frames on hinges, this will allow you to open all sashes/dummy sashes to fix through the frame. You should use the industry standard position for all fixings.
  • Opening sashes are fully beaded, dummy sashes are fitted with temporary sections of bead on the longest jambs (as per the image below) and full beads on the shortest jambs. On the sides with the temporary bead sections in you will be able to see the location of the screws that are holding the dummy sash in place. These will need to be removed in order to open the sash and fix the frame.
  • Remove the location screws on the longest jambs, leaving the temporary glazing beads in place. Remove the beads on the short sides and remove the remaining screws. All dummy sashes are fitted with hinges so you can know open the sash up and fix through the outer frame into the substrate.
  • Once fixed in position close the dummy sash and reposition the location screws through the sash into the frame to secure it shut, replace the short sections of bead.
  • You can then remove the temporary sections of bead and replace them with the pre-cut beads that will be strapped to the head of the window. It is important to protect the corners of the beads when you are moving them as they are scribed and vulnerable to damage at the ends.

Downloads

  • Cristallo Linktrusion System 2 brochure
  • Cristallo uPVC System 3 brochure

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