AS MUCH AS YOU CAN AFFORD. UPGRADING TO THE BEST WINDOWS AVAILABLE, WILL IMPROVE HEAT LOSS, BUT DOES NOT HAVE AS HIGH A COST/ BENEFIT RATIO AS INSULATION DOES. lc
Not a good idea. It really needs to breathe. You can trap moisture and create a mold situation.
You only need 8-10 inches. That is enough for insulation. You only need enough to put in the insulation you want. I'm in Arizona and only have 1' between the ceiling and a flat roof. But it's full of insulation. Works for me. Possible help added: A ridge vent for a pitched roof is a great way to help keep the heat down in an attic.
The 5 different ways to insulate your house would be to put insulation in the roof, Basement, Ceiling, floors, walls.
Based on the height of the ceiling the lights can be placed at half the distance. For a ceiling of 14 feet, the lights should be at 7 feet.
The tile was put in place after it was functional, you should be able to remove it with out shutting down the water supply.
Yes, it is fine to do that. You should also put the batts perpendicular to the rafters. This will help tp minmize thermal bridging.
There are a few things. If you can get 4x8 Hardibacker, that would be best. 3x5 Hardibacker would be second-best, just because of the extra seams you'll have to put in it. Mold-resistant drywall would work if that's all you can get.
the loft insulation is bad in that house
Because they weren't put in properly. You should use screws in ceilings.
You have to know the adhesive AND the ceiling construction really well to do that. I much prefer to find a joist or rafter with a studfinder, then put a hook into the wood to hang anything from a ceiling. - You wouldn't want adhesive failing and dropping something .
Raising the ceiling has transformed the room into into a pleasant habitale space
If is an exterior wall, insulation, otherwise bare studs walls are fine.