ceiling insulation in year round sunroom
I have a 1960 brick ranch home in Colorado with a 240 sq. ft. enclosed patio/sunroom on a concrete slab foundation. I am trying to increase the comfort of the room in winter and summer by insulating the ceiling. The house is post and beam constuction with exposed tongue and groove decking. There is no attic space on the house and the rest of the interior space is drywalled with older blanket type insulation above. The roof material is tar and gravel with little (1″??)if any rigid insulation above the decking. On two sides of the room are walls of low e insulated glass which was installed when the room was enclosed in 2000. I want to insulate between the rafters and then drywall the ceiling. I’m not sure how to do this properly. What type of insulation would be best? I only have 6″ of space from the t&g decking to the bottom of the rafters. Will the space need to be vented since I will be installing drywall over the insulation? Will this project improve the comfort of the room enough to justify the cost?
Replies
Greetings cb, as a first time poster, Welcome to Breaktime.
This post, in response to your question, will bump the thread through the 'recent discussion' listing again.
Perhaps it will catch someones attention that can help you with advice.
Cheers
r u a feckless dastard?
You may want to try your question at the JLC forum or perhaps the info you seek can be found at the Building Science site.
Best to you.
http://www.jlconline.com/cgi-bin/jlconline.storefront
http://www.buildingscience.com/resources/resources.htm
r u a feckless dastard?
Having worked on a few passive solar projects, it almost sounds like many of your problems in the summer may stem from the amount of glass in your sunroom. Insulation in the ceiling will help, but it may not be enough to make the space comfortable. However, in the winter you need all the insulation you can get to help prevent heat loss while benefiting from the solar gain through the windows.
A free method of getting a rough estimate of how livable your space may or may not be is to visit with others in your area that have similar sized and oriented sunrooms. North of you in Laramie, WY there are some sunrooms that are well insulated and well built that are great in the fall, winter and spring, but cannot be used in the summer because of the solar heat gain.