Normal glass blocks most of it. But pure SiO2 fused quartz does not. A bit more affordable is probably borosilicate glass and I would like to have my windows re

Normal glass blocks most of it. But pure SiO2 fused quartz does not. A bit more affordable is probably borosilicate glass and I would like to have my windows replaced with them, but it is not really sold as a common window. So you can probably get one, but it won't be cheap.