I’m trying to assess if this is worth it before talking to contractors. I’ve done a lot of DIY remodels and hired out some but never anything of this magnitude. I want to build an addition on top of the garage and connect to the rest of the 2nd floor. Here’s some assumptions I have....
So I think the the big questions you need to answer before moving forward getting engineering quotes is what would you do with the space, how much is that worth to you, and are you in a position to take in the additional costs if it’s on the high end of what you consider worth it.
Even if it adds $100k of equity to your home, if you can’t afford to take on the debt, or have no real use of it beside adding square footage then it may not be worth the initial exploratory costs. On the same hand if you want more room for an office, kids room, etc, and are in a place to take on the extra costs then I’d call an engineer or three and ask about their costs and process.
You want to insulate first, otherwise anything else you do is just going to be pushing heat through your exterior walls. You should be able to get spray in insulation in those walls without needing to full tear down the drywall. Typically you’ll get a 1-2” hole on the top and bottom of each stud bay for foam to be sprayed in, then you patch that. It can be pricy up front but should pay off super quick if you have none right now (I’m still getting over 3,000 kWh… that just seems like an insane amount of electricity to use).
A mini split likely won’t help, you’ll just lose the cooling without insulation the same as without the mini split. You may want to look into balancing your ducting once you get the house insulated if you still have rooms that are too hot or cold. The bricks should help to stabilize temps and reduce swings over time but the effect is likely small and should be able to be ignored once you insulate.
Not all modern furnaces and water heaters pull in outside air. Less expensive gas furnaces may still use interior air for combustion and almost all gas water heaters will. Heat pump water heaters absolutely need ventilation to work correctly as well.
Building over garage. Is it worth it? ( lemmy.world )
I’m trying to assess if this is worth it before talking to contractors. I’ve done a lot of DIY remodels and hired out some but never anything of this magnitude. I want to build an addition on top of the garage and connect to the rest of the 2nd floor. Here’s some assumptions I have....
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