Local Shutter InstallersHeat · Season
Shutters down, and how you still breathe
Updated
A fully closed curtain on a hot afternoon can leave a room dark and still warm if the heat is already inside. The useful pattern is shade on the sunlit glass, and ventilation from a side that is not blasting sun, or at night when the air is cooler.
What the glass admits
The worked opening for Shutters down, and how you still breathe is 3.2 m wide by 2.1 m high, 6.72 square metres of glass. This figure puts 645 watts per square metre on the pane and uses a g-value of 0.63, about 2731 watts into the room if the curtain is up. An opaque external shutter, taken as stopping 80 percent of that gain while it is fully down, leaves about 546 watts and keeps about 2185 watts out. That is a noon figure for comparison. An internal blind does not get the same reduction. For Shutters down, and how you still breathe, 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
A shutter is not an air conditioner.
Dusk in January
Winter figure for Shutters down, and how you still breathe: glass at 1.2 W/m2K, 6.72 square metres, a 12 degree inside-outside gap and eight night hours. The bare pane is about 0.77 kWh a night on that crude sum. A closed shutter cutting about 18 percent of the flow leaves 0.63 kWh and saves about 0.14 kWh a night, only while it is down. Open it when you want winter sun.
Leave it if
Stop Shutters down, and how you still breathe 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.
Cardiff is only a setting for Shutters down, and how you still breathe. The streets there are not the product.
How to use the figure
The 3.2 by 2.1 metre opening inside Shutters down, and how you still breathe 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 belt, and the illustration is £4,284. 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 Shutters down, and how you still breathe, 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. Shutters down, and how you still breathe covers one kind of opening. The house may have three.
When I would not order yet
Shutters down, and how you still breathe 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 Shutters down, and how you still breathe 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. £4,284 illustrates Shutters down, and how you still breathe for a 3.2 by 2.1 metre opening with a belt, 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 6.72 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 Shutters down, and how you still breathe 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. Shutters down, and how you still breathe uses a belt in the example so you can see how much the motor choice moves £4,284.