Insulating Rim Joists - GreenBuildingAdvisor
2020年1月10日 · If all you are doing is air sealing, focus on the cracks. But if you care about R-value, you need to have a layer of insulation that covers the entire rim joist. In South Carolina, the building code requires above-grade walls to be insulated to at least R-13 -- so that's a good minimum target for the R-value of your rim joist insulation.
Insulating basement rim joist - GreenBuildingAdvisor
2014年12月1日 · Their work clearly showed that placing batt insulation in the rim joist area with or without an interior vapor barrier results in condensation within the rim joist area." Below is the recommended approach for insulating a rim joist on the interior (from the Building Science Corporation document that you linked to).
Which way should the foil facing on polyiso rigid foam face?
2017年12月16日 · Correct me if I'm wrong, but shouldn't the foil facing on polyiso face the interior in climate zone 5 to help retain heat? It will be used on basement rim joists. The heating season is obviously longer than the cooling season. Furthermore, should I leave an air gap between the foam and the wood or should I place the foam directly against the wood before spray foaming the perimeter? Lastly ...
Insulating rim board with rigid foam: best practice?
2016年7月9日 · Zone 5B, main level + full basement. First floor I built with 2x6 walls, and used mineral wool insulation with a smart membrane. Not that that should effect this question, but just giving a bit of info about the construction. Scenario : I have 12” thick i-joists, spaced 16” O.C., and want to insulate the rim-board void for two reasons: Noise reduction, and R …
Old house – insulating basement ceiling vs rim joists?
2021年9月29日 · Insulating the rim joist alone leaves the basement walls to lose heat. You can certainly insulate only the rim joist for now, and gain the benefits of a better insulated and air sealed rim joist -- and remember that rim joists are notoriously air …
Mineral Wool for Rim Joist - GreenBuildingAdvisor
2022年11月26日 · That exterior side insulation will keep the rim joist warmer, so you don't have the condensation issues using a batt on the interior that you would if the rim joist did not have that exterior insulation to keep it warm. A warmer rim joist means you're more likely to be above the dew point temperature, so that's what's important here. It's all ...
Basement Insulation — Part 2 - GreenBuildingAdvisor
2012年9月3日 · The basement doesn’t have that signature Martha’s Vineyard sine qua non, the dehumidifier, and it doesn’t appear to need it. Tips for using a two-component spray foam kit. The next step was to insulate and air seal at the rim joist, so that the thermal boundary was continuous to the bottom of the subfloor above.
Basement wall and rim joist insulation clarification
2019年1月8日 · My understanding is that I should remove the blanket and rim joist insulation. Then install foam board and great stuff to seal the rim joists. I am quite limited in space in my basement so every inch I can save helps too so I was going to use 2″ foam board in the rim joists but 1.5″ for the walls and caulk all around.
Rim joist insulation in finished basement - GreenBuildingAdvisor
2020年4月2日 · I would prefer to use EPS as it is generally easy to come by in my area. However, I know that code requires a thermal barrier (such as drywall) over the EPS. My question is whether I have to put drywall directly on the EPS, in the rim joist, or whether the finished ceiling (drywall) in the basement is enough to meet code. Thanks Andy
Insulation — basement rim joist - GreenBuildingAdvisor
2014年9月23日 · Hello I want to insulate the rim joists of an old home. I have caulked the joists due to openings in the wood from age. I don't want to use rigid board/spray foam. I was going to use batt insulation (unfinished basement), but wonder if there is something that is not toxic or contains fiberglass, etc.. something i can cut and shove in the openings and just leave it there. I don't plan on using ...