Enlarging a hole thru the roof?

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Old 10-08-15, 10:00 AM
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Question Enlarging a hole thru the roof?

I want to put some more insulation in a space I can't get into. There is a hole already there, can I make it bigger without compromising the integrity of the roof? I have included a picture of what I'm talking about. The previous owner cut the existing hole. That little hole on the left is where he ran into a rafter on the roof that covers this spot. There is a chimney just inside the bigger hole on the right hand side, you can just make out the bricks. Should I tie the 2 rafters together top and bottom of the hole or isn't that necessary?
 
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Old 10-08-15, 10:02 AM
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Is this where the house was added onto at some point?

Assuming it opens up into more attic space I don't see any reason not to enlarge the hole as long as you don't cut into the rafters.
 
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Old 10-08-15, 10:17 AM
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Hi Mark
Yes this does open into another section of attic space. I just can't fit my big butt through that little hole and I was wondering if there might be some reason they made it so small.
How far down can I cut it? I was thinking about putting a little door over the opening.
 
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Old 10-08-15, 10:27 AM
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maybe he was a skinny guy

Being a little on the cautious side, I'd leave a board or two at the bottom and then cut up as far as you need. 2'- 3' would work for me. I don't see any reason to close the hole up with a door as you generally want good ventilation throughout the attic.
 
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Old 10-08-15, 10:32 AM
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Ok didn't think about the ventilation.
He would have had to be seriously skinny, maybe malnourished
 
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Old 10-08-15, 10:36 AM
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Nahh, we've just spent too much time at the dinner table
 
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Old 10-08-15, 10:46 AM
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The only reason to cover it back up would be if the other space is over a garage (seems unlikely, but...). Generally good practice (and code in my area at least) to have attic space over garage isolated from main attic. I believe this is to slow spread of any fire since garage is fairly common place for a fire to start.
 
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Old 10-08-15, 11:48 AM
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Well hole is bigger now. I just crawled out of there. The insulation that is in there is paper faced. Isn't the paper face supposed to be on the top side?? It would be considered the floor if it were covered. Not the roof part.
If not, can I just put this over top of it?
You're right Mark, too much time at the dinner table. I'm beat from just crawling in and out of there. Good thing I made the hole big enough to shove the bales of insulation through.
 
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Old 10-08-15, 11:57 AM
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The paper faces the living/conditioned area which would be down and away from the attic.

You can add unfaced insulation right over that.
 
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Old 10-08-15, 12:02 PM
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AMEN!!!!!! I wasn't looking foward to having to flip all of that.
 
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