Modern Conservatories

Modern conservatories, often known as a lean-to, have a more contemporary design. It is a very efficient use of space, and often the wide facade at the front lends this design to New Wave or bi-fold doors.

The modern conservatory can also be combined with our living-room boxing, cornice and Loggia columns transforming a conservatory into a more efficient room.

As all our products are made to measure, the choice is endless. Using our free design service our professional representatives will ensure your new conservatory will meet your requirements.

With a combination of ventilation, heating, energy efficient glass and reflective glazing a Test Valley modern Conservatory will help keep your new living room, cooler in summer and warmer in winter. The right combination will allow you to be comfortable in your new room all year round.

Test Valley Windows always strive to fit the newest technology so we can offer our customers one of the best products in the market. With modern conservatories, it is certainly not worth fitting the cheapest, however using many years of trading, with our suppliers, you will be surprised at how competitive our prices are.

Conservatory Sides

The above conservatory is a modern hipped or hipped lean-to. The facets are made up from windows,
doors and walls. The choice is based on, your preferred design, ventilation requirements, structural parameters and size. French, New Wave, bi-folding or patio doors will all fit into modern conservatories. Ventilation will be based on your preferred design and the aspect (south, west, north or east facing). The outer walls tend to match the finish of the property, though it is also popular to make a statement, with a different finish and therefore a clear definition between old and new. Frames are linked using structural joiners and posts, Loggia columns, brickwork or blockwork, to ensure that the weight of the roof is transferred to the walls and foundations and not through the frames. Click to view gallery

Internal Finish

Internally, your new conservatory again will be finished to your requirements. Walls can be brick, plastered or panel finished. The internal frames do not have to be the same as the external with dual colours and grained finishes available in all our conservatories. There are numerous options for; skirting, window boards, eaves trim, lighting, heating, electric sockets, overhead fans, handle finishes and flooring.

The above picture shows a modern conservatory that has been insulated, dry lined and plastered internally. You will notice that there is a low up-stand to the threshold, on the French doors, leading out into the garden. This is incorporated into our design to try to minimise step overs and trip hazards.

Click to view building a conservatory slide show.

Roof Options

Test Valley Windows use a number of roofing systems depending on customers requirements. Our main roofing system is Ultraframe and the following options are the main design options of many.

Roof Ventilation
Roof Vents

A roof vent is a fast and efficient way of allowing warm air to leave your conservatory. It is more effective than a window opening through the correct combination of the two is paramount. Our advisers will help you in every step of the design. Roof vents are only available with our glass options. This is because polycarbonate has to breathe, but the roof vent creates a sealed environment resulting in the polycarbonate filling up with moisture. Colour matched to your choice of roof finishing and available in 3 different opening options.

Pole Operated? A screw jack mechanism is operated using a pole. The finish options are chrome and gold.
Switch Control?This is electrically operated from a wall switch.
Climate Control?An electric opener which has the additional benefits of being thermostatically controlled and can close when it rains with the use of sensors. Climate control can also be operated as the switched option.

Trickle ventilation system in the ridge

Ultraframe has developed a ventilation system as warm air rises, to allow this air to escape via the roof, minimising the possibility for condensation to form. This is a controllable vent and can be closed if not required.

Eavesflow (optional)

A controllable vent, that discretely fits, between the top of the side frames and the roof.

Roof Bar Finish

In addition to our standard white PVCu here are just a few of the woodgrained colours available as standard. We can also colour your roof to any RAL colour and match this to the side frames and guttering if you wish.

Chartwell Green
Golden Oak

Ultraselect Options

Ultraselect is a decorative strip that adds classical elegance. The strips simply click into place where the roof joins the side frames enabling you to change the design if you wish.

Roof Glass

Test Valley Windows offer an extensive range of roof glazing options. When designing your conservatory, the choice of a glass or polycarbonate roof is an important one. To have a usable all year round extension a material that deflects heat from the sun and retains the warmth in the winter is required. The factors to take into account are; how sunny is the aspect, is privacy a factor, do you want to allow maximum light into your home and how quiet would you like your room when raining? Taking all these questions into consideration, along with the fact that glass roofs have become more competitively priced, means that around 90% of our roofs are now supplied with glass. Here we explore the sealed unit options offered by Test Valley Windows.

  • Our units are made in Pilkington?s dedicated roof glass factory.
  • All roof units are 4-16-4 toughened, gas filled and come with black warm edge spacer
Self Cleaning glass
  • True self cleaning. Most dirt and grime will wash away when it rains.
  • Choose from: ? Pilkington Activ Sun Shade Blue and Sun Shade Neutral
  • – Pilkington Activ in blue or neutral (solar control)
  • – Pilkington Activ clear (NO solar control)
  • – Saint Gobain aqua green (solar control)
Anti Sun glass
  • Choose Anti Sun blue, grey, bronze
  • Soft coat low e (1.1) as standard, on the inner leaf
Standard Clear glass
  • Highest light transmission
  • Soft coat low e (1.1) as standard, on the inner leaf

Roof Glass Options & Specifications

Features & Benefits of a Glass Roof

Quieter – Much quieter when it rains compared to polycarbonate.
Clearer – Unlike polycarbonate, no structural ribs are required Leaving a clear view.
Cleaner – Choose one of our self-cleaning glass and most dirt and grime will wash away when it rains.
Warmer and Cooler – The combination of reflective glass and our energy saving coated glass will help keep your conservatory cooler in summer and warmer in winter.
U Value – Glass units have a lower U value than polycarbonate which will help keep your conservatory warmer in winter.

Polycarbonate Roofing Sheets

The thickness of our polycarbonate roof sheets is 25mm or 35mm, with a colour choice of clear, bronze, opal, bronze/opal and solar guard. Due to its better performance, we fit 35mm polycarbonate as standard at no extra cost to you. All are designed to reduce glare and minimise solar heat gain. Bronze/Opal gives a bright internal appearance even on a dull day, reduces solar heat gain and provides privacy. Solarguard limits the potential for heat build-up within the conservatory while allowing light to enter the roof, deflecting solar radiation and reducing solar heat gain by up to 50%, when compared with conventional polycarbonates.

Features and Benefits

Cost Effective – Significant saving compared to glass.
Lightweight and Durable – Quicker and easier to install. Able to use larger sections, giving greater design flexibility.
35mm Multi Chambered Polycarbonate – Extra chambers increasing strength, insulation and sound proofing.
Coloured and Solar control polycarbonate – Excellent solar reflection keeping your conservatory cooler in the summer.
Excellent Value? Keeps your conservatory warmer in winter.

Every effort has been made to ensure the colours of the swatches printed above match as closely as possible the physical sheets. If you are in doubt about the choice of colour and its effect on your proposed conservatory we strongly recommend you ask for a swatch sample prior to purchase. Test Valley Windows treats polycarbonate as a generic product and will vary its supply base from time to time.

Side Frame Glass (As Seen on TV)

Over a quarter of all domestic heat loss escapes through windows and doors and with spiralling energy bills this can add up to a lot of wasted money. The single most important factor, relating to the energy efficiency of a window, is the glass.

By combining SGG PLANITHERM TOTAL+ with other specialist glass products available, a multitude of high performance, multi-functional double glazing solutions can be achieved.

Solar Control Glazing

The SGG COOL-LITE family presents an extensive range of solar control solutions, designed to reduce solar heat gain, thereby reducing reliance on ventilation and air conditioning systems.

Low-maintenance Glazing

SGG BIOCLEAN can be combined with SGG PLANITHERM TOTAL+ to add effective self-cleaning properties to a double glazed unit. This product combination offers a significantly more neutral and less reflective solution compared to equivalent products currently available on the market.

Acoustic Glazing

SGG STADIP SILENCE is an acoustic PVB laminated glass, which noticeably reduces noise while also offering the same safety and security characteristics as laminated glass.

Increasing Solar Gain to Increase Energy Rating

Window Energy Ratings Combining SGG PLANITHERM TOTAL+ with SGG DIAMANT low-iron glass in the outer pane can improve the energy index of a given window by further increasing solar gain.

Triple Glazing

Triple Glazing is an excellent option for conservatories because the extra pane of glass reduces solar gain and increases the thermal efficiency. The inner panes are constructed using two panes of Planitherm Total+and the outer is the glass of your choice, tinted, self-cleaning, clear etc. We always toughen the centre pane to reduce the risk of stress fractures which is more common in triple glazing.

Super Spacer

To enhance the thermal efficiency and life of our windows we fit our double glazed units with low conductivity Super Spacer. This replaces the traditional metal bar and helps prevent or eliminate condensation around the edge of the sealed unit.The spacer is manufactured from a high-quality silicon that increases the seal’s durability, is resistant to ozone, UV light and oxidation. All this increases the life expectancy of the sealed unit.A high desiccant content absorbs any moisture that is in the environment during manufacture improving the clarity of the unit.


Our PVCu Windows are manufactured using the most up-to-date modern materials. Back this up with our security guarantee and our 10-year insurance backed product guarantee, you can have confidence in your decision when choosing “Test Valley Windows”.

Fifteen wood grained finishes hundreds of colours

With a vast range of designs and finishes the choice is endless. In addition to white PVCu, you can choose from 15 different grained finishes or select your RAL colour from hundreds of options.

Thermal Reinforcing

We all know how important it is to fit energy efficient windows, not only can they save your family money, they can also reduce your impact on the environment too.

But is there a way to make your energy rated windows work even harder for you? There is with Test Valley Windows!
As a company committed to environmental issues, we are constantly striving to improve the products we offer, which is why all our windows are now supplied with recycled PVCu thermal reinforcement.

What are thermal reinforcements?
Windows are traditionally manufactured with steel or aluminium reinforcement which provides strength and support. However, steel is not an insulating material, which means valuable heat can be lost simply through the material used to reinforce frames. PVCu thermal reinforcements are not only as strong as steel, and they are the simplest way to boost the thermal efficiency of your windows. The unique multi chambered design creates a barrier against airflow travelling through the window, which minimises the heat which can be lost through your window frames.

Side Frames

For side frame specification, please view our window and door sections.

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