Ideas to keep cool in offices, schools etc, where there are larger windows...Use this idea, with foil on one side & use artwork, projects, noticed etc on the other to brighten up the space, during a heatwave!!! xxx Allowing air to circulate, then can just be used again, in the usual manner, when the heatwave passes !!! xxx If you order maybe a couple of extra rolls through the year, when it comes to the heatwave risk session, there won't be some much of a panic & the UK is known for this sadly, instead of just thinking reasonably...Plus, you could use aluminium foil sheets from the art & design teachers or in general at schools, offices, catering, even ask down your local tip or go to the charity shops, to get art supplies, Argos etc xxx Could be a "fun" thing to do !!! Everytime there's a heatwave, new foil art work could appear !!! Team building in the workplace !!! xxx Let's call it : "The Heatwave Challenge" xxx Beloud