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The 5 degree claim in shutter adverts
Updated
Adverts sometimes say a room will be 5 to 8 degrees cooler. That can happen in a glazed room that would otherwise bake, and it can fail in a house that is hot for other reasons.
What the glass admits
The worked opening for The 5 degree claim in shutter adverts is 1.2 m wide by 2.1 m high, 2.52 square metres of glass. This figure puts 645 watts per square metre on the pane and uses a g-value of 0.7, about 1138 watts into the room if the curtain is up. An opaque external shutter, taken as stopping 85 percent of that gain while it is fully down, leaves about 171 watts and keeps about 967 watts out. That is a noon figure for comparison. An internal blind does not get the same reduction. For The 5 degree claim in shutter adverts, use the noon figure to compare two openings on the same house, then let a measured survey replace the figure.
An internal blind does not get that reduction, because the energy has already crossed the glass.
The hot part of the day
Ask for the assumed glass, the hours closed and the ventilation. A percentage of solar energy stopped is a more honest figure than a promised temperature.
Dusk in January
Winter figure for The 5 degree claim in shutter adverts: glass at 1.4 W/m2K, 2.52 square metres, a 12 degree inside-outside gap and eight night hours. The bare pane is about 0.34 kWh a night on that crude sum. A closed shutter cutting about 24 percent of the flow leaves 0.26 kWh and saves about 0.08 kWh a night, only while it is down. Open it when you want winter sun.
Leave it if
Stop The 5 degree claim in shutter adverts if the door is an escape route and the motor has no way to open when it is dead. A photograph is not a manufacturing size.
Salford is only a setting for The 5 degree claim in shutter adverts. The streets there are not the product.
How to use the figure
The 1.2 by 2.1 metre opening inside The 5 degree claim in shutter adverts is there so a quote has something to disagree with. If the tape gives a different size, the tape wins.
The example drive is a wired motor, and the illustration is £2,002. A belt, a wired motor and a solar motor can share a curtain and still be different jobs. Compare those lines, not a single bold total.
What the survey still has to write down
For The 5 degree claim in shutter adverts, ask where the box lands, what colour reference will be ordered, and how the curtain opens when the motor is dead. Those three answers move the job more than a rounded price.
Leave the lantern, the side light and the next elevation off the order unless they are drawn. The 5 degree claim in shutter adverts covers one kind of opening. The house may have three.
When I would not order yet
The 5 degree claim in shutter adverts should wait if the opening is an escape door with no way to raise a dead motor, or if the front is the elevation a conservation area was drawn to protect.
A photograph is not a manufacturing size. Two quotes for The 5 degree claim in shutter adverts only compare when the slat, the box and the drive are the same kind of thing.
Questions worth asking the fitter
Is the price on this page a quote?
No. £2,002 illustrates The 5 degree claim in shutter adverts for a 1.2 by 2.1 metre opening with a wired motor, at September 2026 rates. Your survey replaces it.
Does the shutter cover every pane?
It covers the opening it is built for. Here that example is 2.52 square metres. A roof lantern, a side light or the next elevation is another line.
What if planning is unclear?
Do not pay the factory for The 5 degree claim in shutter adverts until a listed building, a conservation front, a flat or a shopfront has a written answer. Ordinary rear walls on houses are sometimes simpler.
What should two quotes share?
The same openings, the same slat type, and the same drive. The 5 degree claim in shutter adverts uses a wired motor in the example so you can see how much the motor choice moves £2,002.