Local Shutter InstallersWinter · Season
Frost, snow and the little solar panel
Updated
A panel under a thick cap of snow does not charge. A panel in hard shade does not charge.
When the curtain has to be down
Motors draw little power, so a battery can coast through dull weeks, but a survey that ignores a north soffit is guessing. Wired power is the grown-up answer when the sky view is poor.
A size you can argue with
The worked opening for Frost, snow and the little solar panel is 1.5 m wide by 2.1 m high, 3.15 square metres of glass. This figure puts 570 watts per square metre on the pane and uses a g-value of 0.63, about 1131 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 226 watts and keeps about 905 watts out. That is a noon figure for comparison. An internal blind does not get the same reduction. For Frost, snow and the little solar panel, 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 night cover
Winter figure for Frost, snow and the little solar panel: glass at 1.2 W/m2K, 3.15 square metres, a 12 degree inside-outside gap and eight night hours. The bare pane is about 0.36 kWh a night on that crude sum. A closed shutter cutting about 18 percent of the flow leaves 0.30 kWh and saves about 0.07 kWh a night, only while it is down. Open it when you want winter sun.
A bad reason to proceed
Stop Frost, snow and the little solar panel if the only place for the box is a listed street front and nobody has written advice from the council. A photograph is not a manufacturing size.
Reading is only a setting for Frost, snow and the little solar panel. The streets there are not the product.
How to use the figure
The 1.5 by 2.1 metre opening inside Frost, snow and the little solar panel 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 £2,073. 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 Frost, snow and the little solar panel, 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. Frost, snow and the little solar panel covers one kind of opening. The house may have three.
When I would not order yet
Frost, snow and the little solar panel 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 Frost, snow and the little solar panel 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. £2,073 illustrates Frost, snow and the little solar panel for a 1.5 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 3.15 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 Frost, snow and the little solar panel 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. Frost, snow and the little solar panel uses a belt in the example so you can see how much the motor choice moves £2,073.