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Christine M. · Glasgow
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In a lot of the sandstone tenement flats along and off Rutherglen's Main Street, the kitchen at the back is warm, the bathroom is warm, and the front room, the biggest room in the flat with the most glass in it, never quite gets there. People assume the boiler is too small. Usually it is not. The front room radiator is the last one on the longest run of pipe from the boiler, and water takes the easiest way round, so the radiators nearer the kitchen take most of the heat before much of it reaches the front. That is a job for heating engineers, not a new boiler: measuring what each radiator gets and setting the valves so the far end has its share.
Tell us what's up, we usually get back within the hour with a clear price.
In short: Heating engineer in Rutherglen G73 for tenement flats where the front room never warms up. Radiators balanced by measurement.
Covering Rutherglen G73. Monday to Saturday 8am to 6pm. Call Mo on 07988 591331.
Rutherglen's Main Street tenement flats run from a front room on the street to a kitchen on the back court, and the heating has to reach the length of the flat from the boiler at one end.
Most of the tenement flats on and behind Rutherglen's Main Street are laid out the same way, and the layout is what decides how the heating behaves. A front room, and often a bedroom, face the street. The kitchen and bathroom face the back court. A long lobby joins the two, and in a through flat it can be the full depth of the building, with the close stair on one side.
None of these flats was built with central heating. They had a coal fire in most rooms, and radiators came later, for most flats some time from the 1970s on, with the boiler put in the kitchen because that was where the gas and the flue were easiest. The pipes went under the lobby floorboards to the rooms at the front. So the front room radiator ended up at the far end of the longest run in the flat, serving the room with the biggest floor, the most outside wall and, where there is one, a bay window full of glass.
Since then most of these flats have had double glazing and a new boiler or two. The radiators often have not changed, which means the front room radiator is frequently big enough on paper for the room as it is now, more so than when it was fitted. When a room with a big enough radiator stays cold, the shortfall is in the water reaching it, and that is why the flow gets measured before anyone talks about a bigger radiator.
If the heating has stopped altogether, rather than falling short in one room, that is a breakdown. Ring 07988 591331 and say which it is.
Where the boiler itself is at fault, repairs to all the common makes by Gas Safe registered engineers.
Drainage is a separate team on the same number. Tenement waste stacks and back court drains are theirs.
Balancing, lockshield and radiator valve replacement, extra radiators, and moving a radiator under a bay window.
Water leaves the boiler and splits at every radiator on the way. The kitchen and bathroom radiators, a couple of metres from the boiler, offer the shortest way back and take a big share. By the time the flow reaches the front room there is less of it, and it has cooled on the way. The radiator there is hot at the valve end and barely warm at the other.
Every radiator has a second valve under a plastic cap, the lockshield, which is there to limit its flow. In plenty of flats every one is fully open, because nobody set them when the radiators went in. With every valve open, the nearest radiators take what they like and the front room gets the rest.
Where the radiator went on whichever wall was easiest to reach from under the lobby, the bay is left with no heat under it. Cold air drops off the glass and runs across the floor, so the room feels colder than the thermometer says even with the radiator hot.
Some flats have had the boiler taken out of the kitchen and put in a hall cupboard, or the kitchen itself moved, during a refit. Either can change which radiator is last in line, and the valves are rarely reset afterwards. A room that heated fine and went cold after a refit points here.
David balances a tenement flat with clip-on thermometers, not by feel. One goes on the pipe into each radiator and one on the pipe out. He starts at the radiator nearest the boiler, closes its lockshield until the drop in temperature across it is where it should be, then works along the lobby to the next. The front room is done last and usually ends up with its lockshield wide open. On a flat of three or four rooms it is an afternoon. The caps go back on so the settings stay put.
Balance first, almost every time, because it takes an afternoon, needs no parts, and tells you whether the radiator is the problem at all. Once the valves are set, every radiator gets its share of the flow. If the front room then warms properly on a cold day, you are done, and a bigger radiator would only have been a bigger version of a starved one. If it still falls short with the water reaching it hot, the radiator really is too small for the room, and a larger one, or a second one under the bay, is the right answer. That happens most in front rooms knocked through into the bedroom next door, where one radiator is now heating what used to be two rooms. The order matters for cost as well as comfort. A bigger radiator on an unbalanced flat often makes the front room better and the bedroom beside it worse, and the flat ends up being balanced anyway, later, with a part you might not have needed.
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