HVAC Experts - I need some help?
Probably the closest thing you'll find is a glow in the dark yarn that Bernat made for the Halloween season last year, if you can still find itThat said it was generally sold at Michael's and other craft type storesIt had several minuses, including a very harsh hand and it only glowed in the dark for a few minutes.
Yes it will cut down the draft but for 200 bucks Id invest my money in something elseYou could simply use regular insulation on the stairs for the pull down attic doorI would invent my money on two things a power roof vent and a digital programmable thermostatWith the power roof vent or also called an attic fan this will suck the heat out of the roofAnd in turn the AC system will preform better when its hot outI ve put three of these fans in2 in 6,000 square foot house where the ac for the upstairs would never shut off on a hot dayNow they cycle like normal1 in a house that about 1900 square feet and the home owner has a 18ft vaulted ceiling in there living room and complained that that room was hotWe had already installed an extra dedicated return in that roomAnd then installed the power roof vent we say a 9 degree temp diff in that room and a 4 degree drop in the bedroomsJust something you might look intoBear in mind that the power roof vent needs electric and its thermostatic controlledBut the cost is so low that the investment pays for itself by the second year.
there is no such thing as uv sensitive yarn
