Expert Q
Question:
I have a fifty year old 24 ft by 24 ft story and a half garage. There are living quarters upstairs with a 13 ft by 23 ft. room The rafters are 2X4 at 16" o. c. The sloped underside of the rafters is about 6 feet. I am planning to tack up 1 1/4" strips to each upper edge of the rafters and enclose the air space with 1/4" plywood. In order that I don't lose too much headroom, I am putting only an additional 1 1/2 inches to the underside of the rafters, giving me 3 1/2 inches for insulation. I am going to open the soffit and use aluminum vented. My question is: will the 1-1 /4" air passage be sufficient for ventilation?
Answer:
Even one inch would be enough as long as you have good soffit venting and a baffled ridge vent at the top of the roof.
Answered By: Ren Molnar
More Questions & Answers ...
1.
I have recently purchased a 26 year old home, which has a bathroom fan that vents directly into the attic (blo ...
2.
Last fall I had a furnace installed in the attic. (No basement, minimal crawl space). Previously I had a heat ...
3.
I replaced my roof this summer and the contractor and I both felt the roof suffered from a lack of ventilation ...
4.
My father is having a new roof put on his house and would like your advice on continuous ridge venting. Here a ...
5.
I am a single Mom (40 something) and now live in a non-profit housing (townhouse) which is geared to income. I ...
6.
I just had a roof replaced. The salesman who sold me that I didn't have enough ventilation. He suggested more ...
7.
I am an architect. I have been looking for options on website and having trouble finding appropriate suggesti ...
8.
I had asked about putting a steel roof on our mobile home over original aluminum roof and put 1 inch styrafoam ...
9.
I was wondering can I clean attic mold myself and how and with what and so I have to replace all the insulatio ...
10.
There doesn't seem to be enough insulation under our roof or garage. I need help. Where can i get some? ...
11.
I'm having a new roof put on my 1.5 story, hip roofed home and have been reading about the importance of ...
12.
My attic gets pretty hot in the warm weather. When I look under the metal sheets for the soffits, it looks li ...
13.
110 year old farm house, one and a half stories, therefore no soffits since roof rafters sit right on brick wa ...
14.
I'm building a new home this summer and much of it will be custom work. The roof on it will be a hip roof ...
15.
Our bungalow wasbuilt in 1956 and we are now replacing the roof again. The roofers are giving us mixed signal ...
16.
i want to add insulation to my attic which now has about 1 1/2 in. of loose and paper wrapped insulation in it ...
17.
In the vinyl on my wood trim, I am asking that more ventilation holes be cut in the soffits before they vinyl ...
18.
Our new house will have cedar siding exterior with one 32' x 5' front porch covered and one 16' x ...
19.
I had a tear-off, new roof with a ridge vent installed (gable to gable). My roofing salesmen said that I shou ...
20.
The soffit vents of my house are stuffed with insulation which is very difficult to remove. I understand the ...
21.
i have condinsation drops built up on the roofing nails that poke through the sheathing of my roof. there is ...
22.
I do not have U channels but plan to put some in next year including roof vents. Do I remove the part of the i ...
23.
I didn't receive your response to the 2nd part of the e-mail I sent to you concerning attic insulation.
24.
For the past two winters, we have had leaks around three of our upstairs windows. I saw somewhere that this c ...
25.
Ren: Your radio show in Saskatoon, Saskatchewan is a taped version and played Saturday PM. I really miss you ...
26.
My house has a hip roof. We install new shingles last week. I noticed there are no holes in the wood soffits ( ...
27.
I recently purchased a 75 yr. old story and-a-half, just outside of Edmonton, Alberta. As the home is not very ...
28.
Attic 500 sq. ft. cellulose(?) blown in insulation 3 gable intakes of 365 sq. in. l roof exhaust vent unable ...
29.
I have a fifty year old 24 ft by 24 ft story and a half garage. There are living quarters upstairs with a 13 ...
30.
My metal roof has a cap but there is no air space through which air can escape. Under the metal roofing there ...
31.
I have a 50 yr. old house with about 10 inches of insulation in the attic (gabled roof) and individual soffit ...
32.
With five people showering in our house, there is a tremendous amount of humidity in our bathroom, even with t ...
33.
Could you let me know how much attic ventilation that we need, is there a formula that is used to calculate th ...
34.
I live in a 14 unit townhouse. And ice dams originate on the two units on the top level: the highest point of ...
35.
We live in a 17-year-old, two story just north of Bolton, Ontario. We are the original owners. I would like ...
