Why a Curved Bay Radiator?

The simple answer is to increase efficiency and save on valuable space in your room.  

Lots of our customers come to us after having been told that curved radiators are no longer available, and to fit a new replacement flat radiator on another wall in the room.  This means a higher cost to the homeowner and more work for the installer.  Flooring has to be disturbed and removed, extra pipe work laid and this also results in the loss of a significant amount of wall space that will no doubt be used to place furniture up against.

It does not take a lot of imagination to understand that having a radiator behind furniture, such as a sofa reduces it’s output.  Whilst it may be warming the back of the sofa, it is not doing it’s primary job which is to heat the room.  Indeed, we have supplied bay radiators to customers in this very scenario.  They are looking to increase the amount of useable space in their room whilst at the same time using less energy to heat the room.  For larger rooms it may be better to have more than one radiator- one in the bay and another at the opposite end of the room.  This balances the heat better in the room and combats cold spots in the room.  Of course, once the radiators have been fitted with Thermostatic Valves (TRV’s), it is imperative that the heating system is balanced to ensure the whole property heats up evenly.  It is not unknown for radiators closest to the boiler or heat pump to ‘rob’ other radiators in the system of hot water.  With a little effort, the radiators closest to the heat source would be adjusted and turned down on the lock-shield valve side, and the ones furthest down the circuit would be almost fully open.  A quick check is to place a hand on each radiator and they should all be at around the same temperature once the heating has been running for an hour or so.  If one radiator is noticeably hotter than the others, turn the lock shield valve down slightly.  If on the other hand another radiator is noticeably cooler than the others, turn it up on the lock-shield side.  It should be remembered that any adjustments are only ever done on the lock shield side, not the TRV head side.        

We also can help if your old radiator has developed a fault.  This normally happens when the old unit has come to end of it’s useful life and a replacement is required. This could be because it has been clogged up with sludgy deposits from a poorly maintained heating system or it has corroded and started to leak due to inadequate corrosion inhibitor in the pipework.  

We should note at this point that corrosion inhibitor is not ‘for life’.  It has to be replaced every 24 months to maintain it’s effectiveness.  Look out for a sticker on your boiler or heat pump detailing the date the inhibitor was placed into the system, the installer’s details and most importantly the date it needs to be replaced.  This is equally as important as having your boiler serviced, because it assists in stopping corrosion in not just the bay radiators, but any other steel radiator in your property along with the heat exchangers in your boiler or heat pump.  If a system is allowed to run without adequate rust inhibitor, it can result in expensive repairs being needed to the boiler and radiators.  This is totally preventable as long as the inhibitor is present and at the correct concentration.  Larger properties with many radiators would require a higher quantity of inhibitor in the system.  Generally speaking, 1 litre of inhibitor would be enough for around 10 average sized radiators.   

We also get many requests to repair existing bay radiators.  Unfortunately, once a radiator has developed a leak through internal corrosion, the battle has already been lost.  By repairing the point of the leak, the water pressure will find the next weakest point and so on so forth.  The situation then arises where you are only ever chasing the next pin hole leak.  In cases like this, the only sensible course of action is to replace the faulty radiator with a new one.  We have supplied many thousands of customers with new bay radiators, to replace faulty ones or as brand-new installs.     


Radiators have been fitted in bays for decades- the simple reason being that it is the best place to site a radiator. Most 1930’s semi-detached properties in the UK have curved bays at the front, both downstairs and upstairs, and most have radiators fitted into the bays too.  During the post war period, there was a housing boom to replace and improve the UK housing stock that had been damaged during the war.  Lots of semi-detached properties were built up and down the country, most with curved bays.  The curved bay window was popular because it increased the space inside the room and also enhanced the amount of light entering the room.  It also happened to be a great place to fit a radiator as it was considered ‘dead space’ in terms of placement of furniture etc.  During this time, energy was in great demand and it was important to utilise heating energy in the most efficient manner possible.  Placing a radiator in the bay perfectly met this requirement.  This logical thinking still holds true today, hence it is always best to place the radiator underneath a window.  


The size and shape of bays in the same property also varies.  On the whole, the curved bay downstairs tends to have a shallower wall height than the matching bay upstairs.  This has been designed to increase the amount of light entering the downstairs lounge or living room, whilst having a taller wall and shorter window in the upstairs bedroom bay to facilitate privacy.  This results in shallower and longer radiators fitted in the downstairs bay, and taller, perhaps slightly shorter radiators fitted upstairs.  We make radiators in many different heights, from 300mm, 400mm, 500mm and all the way up to 600mm.  


Having a bespoke shaped radiator to fit in the bay also adds an element of style and class to the interior of any room.  It is one thing buying a suit off the shelf- it is something totally different having one made especially for you.  This is exactly what we do with radiators- the shape is bespoke to the room.  Radiators that have been especially made to fit in a bay are also a feature in the room.  Our standard finish is Ivory white, but we have had customers paint their radiators themselves after delivery- it is very straightforward to do.  If you have ever done any painting around the house, you are more than experienced and qualified to paint a radiator.  Just make sure that the valves to the radiator have been turned off and it is cool before starting.  Give the radiator a light rubbing down with some sandpaper and brush or spray radiator paint on to it.  A few light coats of paint are always better than a single heavy coat (A single heavy coat of paint can result in runs and drips along the front panel and the convectors).  Once touch dry, leave to fully cure for a few days before turning the heating back on. 


Another thing to note is that the bays in the same house, one on top of the other are almost always totally different.  It would be natural to assume that the shape and curve of the bay would be the same upstairs and downstairs, but this is hardly ever the case.  Downstairs bays a generally built using double brick walls.  Upstairs bays usually are constructed using single brick along with a timber frame which is then boarded- this changes the shape of the internal curved wall.  This is why we always ask for separate measurements for each room, to assure a perfect fitment of the radiator to the wall’s curve.  Naturally this can cause some anxiety when ordering- however please do not worry!  We check all the measurements prior to the radiator being put into production.  On the rare occasion that they do not coordinate with each other, we may ask you to re measure the dimensions.  Once we accept the measurements, we guarantee that the radiators will fit the bays.


It would also be prudent to note that the downstairs room of a house has a higher heat loss compared to the same size of room upstairs.  This is due to the fact of having a cavity beneath the ground floor room or a solid concrete floor.  This type of floor substrate reduces the effective insulation of the room and therefore results in a higher heat loss.  The radiator in turn has to be larger to compensate to heat the room adequately and to a comfortable temperature.  This is why even though the bedroom may be the same size as the lounge, it has a smaller radiator.      


If you are looking to heat your home more efficiently and save valuable space, then a curved radiator in your bay window is what you need. 

We are the UK's premier suppliers of Bay window radiators at fantastic prices.  Living in the Northern hemisphere means we here in the United Kingdom are faced with mild summers and bitterly cold winters.  As a result, our houses get very cold and in today's climate of austerity we need to find new and innovative methods of heating our homes and buildings effectively and most importantly efficiently.  Science has proven that the coldest part of any building is near the external windows.  As over 95% of buildings in the UK are heated using hot water central heating boilers combined with radiators, it is imperative that the radiators are placed underneath the windows.  On a flat wall this is usually not an issue.  However, in homes which have Curved bays (around 68% of all UK houses) this is a bit trickier to solve.  In days gone by radiators were just panels without any convectors, which were easier to shape and roll to fit the contours of a curved bay.  


However, the need to improve the heat outputs and therefore efficiency of the radiator necessitated the increase in the surface area of the panels.  This was done by adding corrugated fins behind the panels, called convectors.  In some cases, this simple addition nearly doubled the heat output of the radiator.  This ingenious change however caused a massive issue for those astute homeowners who wanted to have the benefits of having a radiator in a curved bay along with the increased thermal outputs.  Almost overnight it became impossible to make a radiator with a convector to fit a curved bay.  


This is the time when our story at curved-radiators.com began.  Our company founder noticed a gap in the market and devised a revolutionary method of shaping the radiator into a curve whilst still retaining the all-important convector panel.  Our process has since been enhanced and refined to the point where we can make totally bespoke radiators for curved bays at an unbelievably low price. We deal with national homebuilders, councils, builder’s merchants and plumbers.  Our main customers however have been and always will be the householder. 





The Curved Radiator Specialists

Based in the heart of London but supplying Greater London and the rest of the UK - we can make and deliver your curved radiator quickly and at an amazing price. We have sent our radiators as far afield as Scotland and Wales.