Local Shutter InstallersNoise · Survey
Decibel claims on brochures
Updated
A decibel figure without the test standard, the frequency and the glass beside it is an advert. Traffic rumble and a neighbour's voice are different sounds.
Sun, in watts
The worked opening for Decibel claims on brochures is 1.8 m wide by 1.2 m high, 2.16 square metres of glass. This figure puts 545 watts per square metre on the pane and uses a g-value of 0.76, about 895 watts into the room if the curtain is up. An opaque external shutter, taken as stopping 90 percent of that gain while it is fully down, leaves about 89 watts and keeps about 806 watts out. That is a noon figure for comparison. An internal blind does not get the same reduction. For Decibel claims on brochures, 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.
On this opening
If sleep is the reason for the spend, budget a proper window as well if the existing pane is a thin double unit from the 1990s.
The same glass in winter
Winter figure for Decibel claims on brochures: glass at 2.6 W/m2K, 2.16 square metres, a 12 degree inside-outside gap and eight night hours. The bare pane is about 0.54 kWh a night on that crude sum. A closed shutter cutting about 30 percent of the flow leaves 0.38 kWh and saves about 0.16 kWh a night, only while it is down. Open it when you want winter sun.
I would not order yet
Stop Decibel claims on brochures if the solar panel would sit in a soffit with no sky, and the quote has no wired alternative. A photograph is not a manufacturing size.
Aberdeen is only a setting for Decibel claims on brochures. The streets there are not the product.
How to use the figure
The 1.8 by 1.2 metre opening inside Decibel claims on brochures 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 solar motor, and the illustration is £2,172. 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 Decibel claims on brochures, 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. Decibel claims on brochures covers one kind of opening. The house may have three.
When I would not order yet
Decibel claims on brochures 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 Decibel claims on brochures 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. £2,172 illustrates Decibel claims on brochures for a 1.8 by 1.2 metre opening with a solar 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 2.16 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 Decibel claims on brochures 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. Decibel claims on brochures uses a solar motor in the example so you can see how much the motor choice moves £2,172.