Spectrally Selective Roofing

In one sense white building products are already spectrally selective in.

Spectrally selective roofing.

That s why armstrong replacement windows feature high performance spectrally selective glass to allow natural light into your home while protecting it from harmful uv rays. The implication is that a spectrally selective roof system which is primarily reflective in the nir and or uv portions of the spectrum will automatically compromise performance relative to a high uniform reflectance. Roofing manufacturers have been advised to provide a solar absorptance value for the colour you choose to enable certifier to match it against the range specified in the commitments on the basix certificate. Spectrally selective glazing is high performance glazing that admits as much daylight as possible while preventing transmission of as much solar heat as possible.

At armstrong we have always aimed to provide our clients with the best and latest technology to protect their homes as well as the environment. Spectrally selective surfaces can reduce the solar absorptance for a given roof colour. Spectrally selective roofing materials o innovative roofing systems e g. Sealed roofs ventilation systems o integrated power roofs pv solar thermal control etc.

Roof colour and glare. The results under given conditions show that the rc module with a spectrally selective cover and a spectrally selective emitter sc se reaches a net rc power of 62 4 w m 2 when the solar radiation is 800 w m 2 which is about 1 8 times that of the typical rc module with a spectrally non selective cover and a spectrally selective emitter n sc. A window glass replacement with spectrally selective coatings is especially beneficial for homeowners living in warmer climates because they help keep the home cool without. Tests indi cate that the colors will sharply reduce solar heat gain through the roof.

Spectrally selective window glazing is a suitable addition for both warm and cool climates. Night sky cooling potential o cool night sky. Spectrally selective glazing significantly reduces building energy consumption by controlling solar heat gains in summer preventing loss of interior heat in winter and allowing occupants to reduce electric lighting use by making. A low e window glass replacement with spectrally selective coatings filter out up to 70 of the normal amount of heat while still allowing plenty of light into your home.

Spectral distribution of solar radiation.