Sunflex SF55/SF55c HSW
Thermally broken aluminium/aluminium and timber composite moveable wall system.
Manufacturer recommends panel widths do not exceed 1,200mm and a maximum height of up to 3,000mm. Heights greater than this can be achieved; please contact our technical department for advice.
The SF55 HSW profile is constructed from a strong aluminium extrusion. This has been thermally broken by a 24mm polyamide insulation bar, guaranteeing it optimum resistance to combat heat loss and condensation. The minimal framework is offered as square edge profile.
The SF55c HSW benefits from the strength and stability provided by the aluminium. combining the natural charm and beauty of timber to the inside, providing the very best of both worlds with a choice of timber profile shape to suit. All timber is sourced from sustainable forests. The standard timbers are Meranti (hardwood) and Nordic pine (knot-free softwood), while other timbers such as American white oak are available by special order.
As an additional feature should in the future you wish to change the timber type or finish to the inside, you can simply order a replacement set of timber frames which can be easily interchanged.
The top suspended running track and rail can be concealed within the ceiling if required and is therefore entirely without the need of a bottom track. With only floor press stud sockets to accommodate the shootbolt locking rods, leaving an uninterrupted floor surface, bottom track option available if required.
The standard locking system offers a very high level of security, with a quick, smooth and easy operation. Each panel incorporates a bottom shootbolt mechanism which is concealed within the framework and operated by an internal flush handle. The shootbolt rods are manufactured in aluminium and linked by a corrosion resistant cam. They are capped with glass fibre reinforced polyamide cones to prevent any damage.
When closed each panel interlocks with its neighbouring panels by continuous gasket seals. All systems are internally glazed as standard for improved security.
Key locking can be integrated in the first opening panel or lead door with a five-lever profile cylinder. This can be fitted to either the inside only or both internally and externally as required, additional locks can be added at every handle point for higher security.
The top and bottom seals consist of twin nylon brush piles giving an effective seal. The double gasket seals between the door panels are continuous and of superior quality (consisting of long lasting EPDM).
A top running system, with an operating mechanism that consists of double horizontal stainless steel polyamide coated wheels, with maintenance free sealed ball bearings. Provide continued quiet, quick and easy, smooth operation and a long life.
The SF55 HSW system is available as standard in silver anodised EV1 or polyester powder coated to a semi-gloss finish white RAL 9016, aluminium RAL 9006, grey aluminium RAL 9007 or anthracite grey RAL 7016.
All handles are specially designed to complement the door system. Standard colours are white RAL 9016, black RAL 9011, aluminium RAL 9006, grey aluminium RAL 9007 or anthracite grey RAL 7016. Gaskets are in black.
Other RAL colours (over 200 RAL colours) are available. Even different colours to the inside and outside (dual colour) or different wood grain effects are available for a nominal charge. The RAL colours can be applied to the handles and hinges if required or alternatively there is a stainless steel handle option. In addition you can specify whether a matt, semi-gloss or full-gloss level of paint finish is required. A marine environment finish that is required to all systems within 5,000m of a shoreline or chemical swimming pool environment is also available.
The SF55c HSW in addition to the external aluminium finishes listed above, the natural character of wood to the inside is perfectly preserved by using Sikkens micro-porous water based wood stains (ie they contain no harmful solvents) in a variety of stain colours. As standard Sunflex timber door systems are fully finished which consists of one basecoat and two topcoats. Clear or oil finishes are available upon request.
Designs can be customised according your preference. The options include mid-rails, mullions, plant-on bars with dummy spacer grids, deeper top and bottom profiles and solid in-fill panels, among many others.
The system can accommodate triple glazing. Our standard 28mm unit comprises of 4mm clear toughened glass to the inner pane x 16mm argon gas cavity x 4mm neutral antisun toughened glass, providing an enhanced thermal efficiency, with a centre pane U-Value of 1.0W/m2K to comply with Building Regulations for safety and thermal efficiency.
All sealed units are BS kite marked, manufactured to BS EN 12600 and BS 5713:1979 standards.
IDSystems offer a wide choice of glazing options, including internal venetian or pleated blinds which can be incorporated inside the glazed unit. These are very popular, especially on internally opening systems where curtains are not practical.
U-Values and heat losses
A U-Value is a calculation of the amount of heat lost through a building material. The calculation of U-Values can be quite complex as it is measured as the amount of heat loss through a 1m2 of material for every degree difference in temperature either side of the material. It is indicated in units of watts per square metre per degree Kelvin or W/m2K. The simplest way to approach U-Values is the lower the U-Value the more thermally efficient a product is.
A U-Value of a door or window is calculated by working out by determining the U-Value of the frame and the area of the glass and is then quoted as an overall U-Value. Beware that some manufacturers may just be providing the U-Value of the glass alone which gives a false overall value. All of our systems have been thermally simulated in accordance with CE standards to BS EN ISO 10077.
Building Regulations approval will be required on all extensions and new builds to which we are able to provide CE data showing compliance. Any replacement works we are able to cover being a member of FENSA and a certificate would be provided on completion of our installation.
Single, double or triple glazing
Single glazing can be used for internal systems that do not have to meet Document L regulations regarding thermal efficiency. Single glazing is available in a variety of thicknesses, types and colours. The most popular options on our internal door systems are clear or satin deco which lets through light but offers privacy.
Double glazing is a minimum requirement for external doors and windows. Our standard double glazed units consist of a soft-coat Low-E (low emissivity) pane and an argon gas filled cavity which provides a centre pane U-Value of 1.2W/m2K. Over the standard we can provide super insulated double glazed units providing a centre pane U-Value of 1.0W/m2K whilst providing solar control.
Triple glazing is becoming increasingly popular, especially in total new builds, as it provides the lowest U-Values possible and can be up to 40% more efficient than double glazing. Combining two panes of Low-E glass and two gas filled cavities glazing U-Values as low as 0.5W/m2K are possible with the added benefit of great sound reduction.
For more information on our huge range of glazing options or for help in specifying the correct glass for your project contact our technical sales department on 01603 408804.
Solar control and the benefits of solar gain
With the standard glass specification retaining as much heat as possible you may wish to consider reducing the heat transfer from outside which is known as solar gain. Solar gain can make glass roofs, conservatories or south facing elevations quite uncomfortable in the height of summer months.
A solar control glass is a glass with a either a special coating or a body tint to reduce the amount of heat entering a building either by reflecting or absorbing heat. Using a solar control glass can reduce the need for air conditioning and blinds. Whilst the solar control glasses are great at reducing the heat they will also reduce light transmittance.
Building control often recognise the benefits of solar gain in modern buildings as large areas of glass will work as a source of free energy during cooler months and increased solar gains are recommended. The use of low-iron glass can increase the heat and light transmittance to provide further solar gains during the autumn and winter months. Many modern designs incorporate overhangs to cast shadows over glazing during the summer combatting the solar gains. Thus allowing solar gains as the sun gets lower in the sky later in the year reducing the need for heating.
When required we fit toughened glass to comply with Building Regulations Document N as an alternate method of compliance we are able to fit laminated glass. Both options have their pros and cons.
Toughened glass has been heat tempered to increasing its strength over ordinary annealed glass by up to five times. Other than the strength the advantage of toughened glass is that should it break it would shatter into non-sharp pieces. It is also available with the widest variety of coatings and can be supplied in larger sheets than equivalent thickness laminated glass.
When the glass is toughened it can suffer from some visual distortion making, meaning the face of the glass is not perfectly flat distorting some reflections.
Laminated glass is manufactured by bonding two panes of annealed glass with a clear plastic interlayer. The benefit of laminated glass is that if it’s broken the glass will crack rather than shattering, improving security. In addition, laminated glass reduces bleaching of carpets, curtains and furniture by filtering ultraviolet rays that would usually penetrate the glass.
The drawback of laminated glass is that extreme heat or cold can cause invisible defects in the glass to form a crack due to the two panes expanding and contracting independently. As the laminated glass is not toughened is does not suffer from the visual distortion that can occur to toughened glass during the toughening process.
As well as offering full height clear glass we can also provide a more traditional style of glazing by incorporating glazing bars, Georgian grids or lead work. Please contact us for further information.
Often neglected when planning your new build or extension is where a suitable space may be for your feline friend, we have the ideal solution. It is possible to have a cat flap fitted into a glazed panel by cutting a circular hole into the toughened glass unit for you to fit an in-glazed cat flap.
We are able to fit venetian blinds within the glazed unit, ensuring a totally dust-free environment which requires no cleaning or maintenance. These are very popular, especially on internally opening systems where curtains are not practical.
Integrated blinds can be tilted to help prevent the build-up of excessive heat and glare of the sun during the daytime and provide privacy when closed. Blind units can be manually operated with an ingenious magnetic control device or electronically operated via remote control. Please visit our dedicated blinds pages for further information.