**Document:** REHAU Heritage System Description **Application:** 18/01292/B — Installation of replacement upper floor windows to front elevation **Decision:** Permitted **Decision Date:** 2019-04-04 **Parish:** Lezayre **Document Type:** report / design_access_statement **Source:** https://planningportal.im/a/29053-lezayre-royal-george-hotel-10-windows-replacement/documents/1329245 --- # REHAU Heritage System Description REHAU HERITAGE SYSTEM DESCRIPTION Building Solutions Automotive Industry ### 1. Introduction REHAU Heritage is the brand name for a particular group of REHAU PVC-U window and door extruded profiles and other components collectively known as the Window 'System'. The word 'System' describes that the individual profiles and components have been designed in such a way as to be capable of being used with each other in different combinations to make a variety of window styles in different sizes. REHAU Ltd. is the 'System' designer and produces and sells the PVC-U extrusion profiles. Other components of the system such as plastic mouldings, steel reinforcements and gaskets are designed and sold by REHAU but not necessarily made by REHAU. Please note that REHAU Ltd. is not the window designer, manufacturer or installer. These functions are in the hands of the independent window fabrication and installation companies who purchase their components from REHAU Ltd., or each other. ![A black and white architectural detail drawing showing a close-up section of a window frame or sill.](https://images.planningportal.im/2018/12/211520.jpg) However, as the system designer, REHAU has created manufacturing guidelines, reinforcement guidelines, recommended maximum sizes, recommended installation procedures - all in an attempt to ensure that the fabrication companies manufacture and install finished products, incorporating REHAU components, that are safe and perform well in use. In most instances safety and performance criteria are taken from national standards e.g. BSI. Please see the appropriate Technical Manual for details. REHAU would therefore like to point out that because of the differing conditions and requirements of individual sites, it is the responsibility of the window designer, fabricator and installer to check the suitability of REHAU Heritage components used. ![A close-up architectural detail drawing showing a window frame section or elevation detail with a scale ruler visible.](https://images.planningportal.im/2018/12/211521.jpg) 1Chamfered external and sculptured internal details add to the system's authenticity. 2 The traditional design detail found throughout the REHAU Heritage system is encapsulated by the specific styling of the sash horn mouldings. ## Rehau Heritage Vertical Slider System Description ![A technical detail view of a timber window frame, likely showing the opening mechanism and frame construction.](https://images.planningportal.im/2018/12/211522.jpg) ![Technical diagram of a white window unit showing frame profiles and glazing details with callouts.](https://images.planningportal.im/2018/12/211523.jpg) ### The Future Of Tradition - Superb traditional sightlines give the REHAU Heritage Vertical Slider unrivalled authenticity. *Both sashes tilt inwards to allow ease of cleaning* ## 2. General Description and Features Simple Construction Two sashes built into the frame that can slide in opposing directions and will remain in any desired position. The sub-frame, which makes up 3 sides of the window (most popular configuration), is welded at the top two corners and mechanically joined at the bottom with a sill by means of screws. The sill is sealed off at each end with an end cap to prevent water ingress into the walls of the property. The subframe can also be an all welded construction with a clip-in sill. This detail is used in installations where stone sills are present. ### Cutting Edge Profile Design The three chambered sash profiles are designed with two front chambers to achieve good heat insulation characteristics and allow isolated drainage. The third chamber, allows the fitting of efficiently, designed reinforcement sections. ### Seals Each window frame contains six weather seal locator grooves, which allow for the insertion of seals between sash and frame. This creates an excellent barrier against both water and air ingress. In order to protect the brush seals against dirt and driving rain from the outside, the sub-frame is stepped twice. Furthermore, the concealed edges of the sashes provide an outstanding insulation factor. - Together with the traditional detailing, the system's thermal, structural, weather and security performance allow the replacement of deteriorated sash windows with a modern day equivalent. ### Fittings A wide variety of standard hardware fittings may be used (please see your chosen hardware supplier for full details), as the REHAU Heritage system has been designed to accommodate as wide a range as possible so that all hardware requirements can be covered without limitation. Steel reinforced sliding latches allow the sashes to be tilted inwards to enable the window to be cleaned from the inside of the property and this facility is concealed for aesthetic and safety reasons. These can be locked off if desired to prevent unauthorised tilting of the sash. Standard balances of 14 mm or 19 mm diameter may be used with the REHAU Heritage system. It is also possible to fix all hardware into a specially designed steel or aluminium section for increased performance. ### 3. System Summary - Stepped frame with either mechanically jointed sill or fully welded options - Supplementary profiles and seals, including Georgian Bars. - A comprehensive range of additional profiles from the REHAU Tritec 60 mm casement system allow for easy and versatile installation options - Optional Heritage style horn replicates traditional timber aesthetics - patented design - A contemporary window style is also available with the use of glazing bead profiles from the REHAU Tritec 60 mm casement system. ### 4. Sash Options Heritage applications - 3 sash profiles which replicate the traditional putty line chamfer externally and a sculptured joinery detail on the glazing bead to the inside. Traditional timber aesthetics can be replicated by combining sight lines of or 62 mm with the 75 mm Heritage Deep Bottom Rail. The 10 mm incrementally stepped sash profiles allow for equal glazing sight lines to run from top to bottom sash, which creates an aesthetically pleasing finished product. ### 5. Colour - The main profiles are extruded to REHAU's own white colour reference 159. All gaskets and low-level co-extruded profiles are available in an aesthetically pleasing 'Silver' colour as standard, to match with the Aluminium spacer bar within standard sealed units. Also White and Black gasketry are available as standard with all it's associated - Additionally, REHAU Heritage can receive the REHAU Acryl II colour coating giving a total of more than 150 RAL colours. - Laminated profiles are available in Rosewood on Brown base profile and Golden Oak on Acorn base as standard. Non-standard colour options are available on request. Please contact your Regional Sales Office for further information. ## 6. Maximum Sizes The maximum sizes for the REHAU Heritage system are contained within the Manufacturing Recommendations and are broken down into easy to use tables and vary dependent on the exposure category of the location of installation. Full details and guidance are available from REHAU Sales Offices. ### 7. Areas of Application The REHAU Heritage Vertical Slider is designed to be used in homes and prestige installations, both newly built or in refurbishment of older buildings. It is of particular interest to those engaged in the renovation of historical or listed buildings. The introduction of the Heritage sash profiles followed extensive consultation and research with conservation bodies and housing associations. ### 8. Material REHAU PVC-U extruded profiles are made from REHAU's own recipe of window grade PVC-U called RAU PVC 1406 which it developed and has used with great success in all of its European window and door systems for over 25 years. However, the suitability of this material for use in windows and doors outside of the UK should be checked with REHAU. ### 9. REHAU Heritage System Performance Where applicable the REHAU Heritage window assemblies have undergone physical performance validation testing for: - Main profiles extruded to BS EN 12608:2003 as indicated within approved profile list and licensed under the REHAU Kitemark KM 13358 - Manufactures of the REHAU Heritage Vertical Slider system will be able to gain quicker accreditation to BS 7412 under REHAU Kitemark License agreement - Classification for weathertightness and guidance on selection and specification tested within accordance to BS 6375-1 - Tested and accredited to meet enhanced security performance requirements within BS7950 - Thermal Performance - BFRC 'B' Rating achieved - Acoustic Performance - it is largely dependant on type glazing unit however it can be expected for a standard REHAU Heritage to achieve min - 32dB. ### 10. Technical Notes for Fabricators a) The mechanically jointed sill and frame allow optional drainage without the specific need for special routing operations. b) The stepped frame ensures a window that is not only reliable but also offers excellent insulation, whilst having aesthetically pleasing sight lines. c) The triple brush seals included in the outerframe create an excellent barrier against water and air. d) There is a high-performance closed cell polyethylene seal between the outerframe and sill to prevent water ingress into the property's brickwork. e) Standard glazing unit sizes of 24 mm and 28 mm can be accommodated within the system sash profiles as standard. f) The glazing beads are clipped into the sash along their entire length, and have co-extruded low-level gaskets. In addition to the Heritage styled sculptured glazing beads, square edged aluminium beads are also available which allow for easy fixing of the lock keep and a more secure fixing for increased security. g) REHAU standard supplementary profiles and Georgian Bars are compatible with this system. ![A black and white scan showing a close-up of a window frame detail alongside wood grain finish samples labeled Golden Oak and Rosewood.](https://images.planningportal.im/2018/12/211525.jpg) --- *Data sourced from the Isle of Man public planning register under the [Isle of Man Open Government Licence](https://www.gov.im/about-this-site/open-government-licence/).* *Canonical page: https://planningportal.im/a/29053-lezayre-royal-george-hotel-10-windows-replacement/documents/1329245*