Aluminium Sliding Doors

U-values and saving energy

In the average home, 80% of the energy used is for heating, but much of this heat just disappears through poorly insulated roofs, walls, windows and doors.

One of the most important considerations when it comes to a choosing door system for your home should be the U-value rating, energy efficiency is an important issue, so much so that it has now been addressed in legislation.

The latest revisions to building regulations (ROI & UK) mean energy efficient doors will be made mandatory. All new doors will need to have a U- value of 1.8W/m2K or less (the current standard for energy efficient windows).

The thermal rating of a window or door is measured in U-Values, the lower the U-Value the better the thermal efficiency it has so will reduce the energy needed to heat your home or premises.

Many companies will give you a U-Value based on the centre pane value or the U-Value of the glass. This value will always be lower than the actual value of the window or door system.

Our aluminium timber exterior sliding doors have a U-Value of at 1.3 or A rated on an energy chart using our standard Low-E double glazed units, making it one of the most thermally efficient efficient systems on the market.

What exactly is the U-value?

The U-value or “overall heat transfer coefficient” shows how well a building product conducts heat. In other words, the U-value represents the rate of heat transfer through a building element, such as a wall, floor or window, over a given area and under agreed standard conditions.

The lower the U-value is, the slower the rate of heat flowing through the object and therefore less heat will escape through the door– or put differently the lower the U value the lower the potential costs of heating that particular building.

Slidingbifold’s products not only meet the new stringent changes in Building Regulations 2010 (UK) 2011 (ROI) ... we already surpass further changes planned for 2013.

BESPOKE DOOR DESIGN

Slidingbifolds offers a wide range of designs based on single, double and triple track outer frames. We offer the maximum fully glazed systems on the market which can also carry the heaviest weight load per door.

EASE OF OPERATION

Our aluminium lift and slide doors opens and closes effortlessly, disclosing great view onto the garden or patio.

WATERTIGHTNESS

Our top of the range aluminium sliding door has a watertightness up to class E750 in accordance with DIN EN 12208.
 

SOUND INSULATION

Combining our state of the art hardware with recommended our recommended profile with a depth of 70mm allows us to create sound insulation in accordance with DIN EN ISO 140-03 and DIN EN ISO 717-1, Rw< 44dB..

SECURITY

Slidingbifolds sliding door is WK2 in accordance with DIN V ENV 1627, which makes it one of leading aluminium sliding doors on the market in relation to security. So are substantial, robust and lockable so our sliding door systems can withstand a sustained physical attack.

Min Height = 1800mm Max Height = 3000mm Max Leaf Weight 400kg

2 Door Configuration Min - max width 1000mm – 6000mm

3 Door Configuration Min - max width 1500mm – 9000mm

Min Height = 1800mm Max Height = 3000mm Max Leaf Weight 400kg

4 Door Configuration Min - max width 2000mm – 12000mm

Min Height = 1800mm Max Height = 3000mm Max Leaf Weight 400kg

4 Door Corner Configuration

5 Door Corner Configuration

Our aluminium sliding doors are available in any RAL colour and can be finished to a matt, satin or gloss sheen.
There are also selections of metallic colours available but have an additional paint set up charge.
The aluminium exterior and interior is powder coated using Coatex which in official tests proved 65% more scratch resistant than standard powder lacquer. There are also more than 200 RAL colours to be chosen from to help match existing decor. The powder coating is UV resistant which prevents discolouring and loss of gloss.
Dual colours are also available providing one colour for the outside and a different colour for the inside. Dual colours require a longer lead time.

 RAL Paint Colours

You can download a RAL colour chart here for guidance purposes but we recommend you obtain a printed RAL colour chart to confirm your colour choice at the time of order. A few RAL colours may require an additional set-up fee, please check with us prior to ordering

Construction
 

Each door and frame uses a highly thermally improved thermal break that boasts the optimum combination of insulation, safety and comfort. Some of are more thermally efficient lift & slide doors will also contain a modular profile insulation that boosts the thermal efficiency to give us a U-Value of 1.3.

Some of our systems can contain a triple glazed unit up to 52mm deep; we also offer a flat outer frame profile as continuous frame with a low threshold for easy access. We offer a wide range of deigns, with stainless steel double tracks so that the units slide smoothly and quietly.
 

1.2 U Value as Standard

Our standard double glazed units consist of 6mm toughened, 20mm argon filled, 6mm toughened with a warm edge spacer bar. We also offer a range of other units to satisfy your individual requirements or Building Control led requests.

We use PLANITHERM

PLANITHERM is Europe's best selling range of high performance low-emissivity glass (low-E glass). The glass utilises the very latest advancements in thermally insulating glass coating technology.

Specially manufactured by Saint-Gobain Glass for the UK market, PLANITHERM products are specifically designed to keep interiors more comfortable in the winter months and improve your home's energy efficiency.

The thermal insulation provided by low-E double glazing is three times more efficient than that of standard double glazing and PLANITHERM products are the ideal low-e solution to meeting and exceeding the newly revised Building Regulations energy efficiency requirements.

PLANITHERM products use a special coating to reflect heat from domestic heat sources back into the room, rather than allowing it to escape through the windows. At the same time, this coating allows free heat and light from the sun to pass through the glass, warming the room and further contributing to the energy efficiency of the windows and helping to reduce your energy bills.

Additional Options

The PLANITHERM range can be combined with many other Saint-Gobain Glass products, providing a multitude of high performance, multi-functional glazing options, including:

 • Self-cleaning and/or solar control glazing
 • Acoustic insulation
 • Obscured and/or decorative glazing

This combination of excellent thermal insulation with high solar heat gain makes PLANITHERM the most energy efficient window glass available and the best possible choice for energy savings