My attic has reached the point of no return with storage. I must use it for that purpose. So now I have to find a way to insulate the attic's roof. For this DIY handyman dad, does anyone know of a step by step guide on how to convert an attic to a storage attic? I can imagine the steps, but I know I'm going to miss something crucial. I live in a normally cold area (New York State). Mentioning this since all articles I've read say I should aim to get R-60 if possible.
What I have:
- since a bedroom was added above the garage, I have two attics (original + new) and they are connected.
- the attic is triangular in shape (from outside), but rectagular attic floor (if that matters)
- there is a ceiling vent (at the middle of the attic roof) to vent hot air?
- there is an attic fan near the top of one side + a "window" cutout, where I guess its used for moisture ventilation.
- the 'new' attic is for a cathedral ceiling, so I cannot walk on it, but I can see there is R-19 insulation (looks small in thickness, so R-value is an estimate).
- There is insulation on the 'original' attic, but there are 2x6 planks used to hold all the storage
- I'm fairly positive there are side vents since that area seems very dirty (wind?)
- The 'original' attic roof does show nail points, so you can see there's nothing but lumber that I can physically touch.
My guess on what I would need to do:
- Put hard foam (pink stuff) in between the beams - Im just not sure how to keep it on the roof?
- close the 'window' + attic vent - somehow, since Im not sure.
- close the connection between attics with a door, since I may still need access to that 'new' attic. And insulate that attic door Im putting in.
- cover up all the pink foam with some vapor barrier, say 6mil plastic since it needs to face the 'living'/storage area. This is to keep an air seal.
I know there's something I've not considered. Does this look right to those that have done this? If there's any documentation with pictures I'd love to see it.