Cold Bedroom above Garage - Insulation Question? (2018)
I wish builders should be accountable for wasting one full room due to poor design and poor insulation.
To address this issue, did following with no luck:
Replaced Carpet (best quality) but no luck as floor/carpet was still very cold in last winter. I have to keep room door close to maintain rest of house temperature. Duct has hot air but not helpful. If use electric heater then room temp comes to typical home temp (22 to 24 C), otherwise always around 7-10 degree down from home temperature.
The other rooms in the house (not above this garage) are fine. After reading similar other old posts on this forum, I cut dry wall in garage roof to see status.
Found spray foam is present (6-7 inch). See attached pic showing space between builder spray foam and draywall.
Looking for suggestions here:
- I feel adding more spray foam above or replacing existing may not help (cost vs. value) as existing foam is ~ 6/7 inch. Also I called couple of companies in GTA they will remove all dry wall first to replace spray foam or add more. So cost will go too high, i guess.
- Thinking to hire someone for blown-in insulation (Cellulose or Fiberglass or Rock Wool Fiber) and ask to make 2-3 cuts and fill all sides between spray foam and drywall area. I hope it should make some reasonable difference. Comments please?
- My garage door is not insulated. Not sure if I should replaced garage door first and get insulated one, instead of blown insulation first. I have feeling insulated garage door only work if we don't open otherwise cold air in will stuck in garage just like fridge/freezer.
Thanks in advance.