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Old 03-02-2012, 02:01 PM  
nealtw
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http://www.bendtek.com/Vented_Drip_Edges.htm
There are a few vented drip edges on the market now, perhaps you could make one of them work instead of adding to the rafters.
The baffles in the the picture is a foam or plastic form against the roof sheeting to hold the insulation away from the sheeting, you should have them in every bay in the sloped ceiling and above the outside walls. What happens is that some heat is lost in these areas and if it stays there it can melt snow and refreeze causing an icedam. So what you want is for the that heat to move thru the attic and leave the vents at the top of the roof.


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Old 03-03-2012, 02:14 PM  
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I’d start with the bath fan also, run it along the floor joist in the bath ceiling to the closest location- back of the house is better. Stay off the slate roof. The gable end vents may be enough for the knee wall attic, one at each end. Same as my craftsman house, no soffit venting. So long as you don’t have moisture problems in the attics or ice dams. Weather-strip the access door as said, use the foam outlet/switch covers throughout. Caulk the drywall/plaster around the outlets/fixture/swathe boxes to stop air. Block the air movement under the knee walls and use housewrap on the vertical attic side of insulation to prevent degrading of R-value by wind-washing, cover the attic floor insulation with the extra: http://www.affordablecomfort.org/images/Events/22/Courses/874/ThPM14_Cox_Beauty__%26the_Beast_Upstars_sec.pdf

http://www.habitat.org/env/pdf/ceiling_and_attic.pdf

Add insulation the attic floors when you can afford it. Find your location near Cities below the map for Zone 5, or 6: http://publicecodes.citation.com/icod/irc/2009/icod_irc_2009_11_sec001_par001.htm

Insulate to minimum Code, R-38-49 for your Zone: http://publicecodes.citation.com/icod/irc/2009/icod_irc_2009_11_sec002.htm

Do what you can afford; any additional insulation is better than none. Air seal before insulating, using the existing f.g. to find all air leaks: http://www.finehomebuilding.com/PDF/Free/021105092.pdf

Air seal the floor above from the basement/crawl to help control the air leaks there from feeding the stack effect to the attic. Foam board and air seal the rim joists as they leak air with the seasonal changes with expansion/contraction and solid wood is R-1.25 per inch.

Gary



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Old 03-07-2012, 08:39 AM  
centaurette
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Default Wow! Lot of good information here!!

Thank you so much, guys! (And pics help immensely thank you )

We already bought the bath exhaust fan so it'll be a matter of getting a warm spell so I can tolerate working in the attic. Lol But, Gary, should I just end the exhaust venting at the end of the roof rafters and not hook it up to anything?

I DID finally crawl up into the top attic to see what I could see. What I found that I believe to be part of the problem was this: No true gable vents, but make-shift "doors" that worked using a pull string (attached to a spring) through the window framing to open and close. It looks like there had been angled slats there at one point, but they've been removed for the most part. The "door" in the vent above my daughter's room worked more like a hatch door than a regular door like in my son's room. So...on cold windy days, the hatch "door" - when opened - would direct the air flow down the wall directly over the windows...WHERE THERE WAS NO INSULATION IN THE STUD CAVITIES in the 3 above the window!!! Holy crap, I was pissed! Lol I hate having to shove insulation in where there's tons of nail sticking out, but I came out virtually unscathed...thankfully. My back wouldn't agree so much...cape cod attics are not forgiving for taller people. Anyway, I put insulation in vertically all the way down to the window framing and then put an extra piece in horizontally at the top. This has made a HUGE difference, but if I pull back the shrink wrap on the windows, it still feels like I've got a window open...and the hatch "door" vent is closed until I go get REAL gable vents. So, without taking the window fully out, I'm not sure where that sizable draft is coming from.

Second issue...neither interior wall of my kids' rooms that create the stairwell have top plates on them. That would explain why that wall felt almost as cold as the walls along the attic. Whoever had put extra insulation up there didn't bother putting any in my daughter's wall (since it's only about an inch gap) and they just laid sections of batts across the top of my son's wall...which is about 4"-5" gap. I just put shoved some insulation in there too for the time being.

The good news...all the 2nd floor wiring is easily accessible from the top attic so now, I can replace all the old cloth-covered wire with new and not have to worry too much about fishing!! Sadly, not having the top plates on the walls make this a lot easier also!!

Gary, nealtw, and old/new...you have been a TREMENDOUS help!! I have scoured the internet and so many people with cape cod issues and not a lot of answers. I'm thrilled I found this forum!

I'm going to leave this thread active (if I can) as I KNOW I am going to come across an issue and not be sure how to fix it.

Thanks again!!

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Old 03-07-2012, 09:23 AM  
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The natural air flow is in the soffet vent and out the peak vents so the batheoom vent out the soffit is the last choice and if you put it there you want to close the soffit vents for 2ft on each side. We live on hills out here so we get to watch what happen to these vents. On cold days and someone has a shower you can see the vent operate near soffits, a lot of the vapour hangs around in the soffit area.

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Old 03-09-2012, 10:36 AM  
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Ok, got the bath fan in. Just have to hook up the duct line, cut the hole to the outside, and put the vent cap on. I had to overcut the hole to fit the fan in due to the type of installation required. My question is how can I repair the irregular plaster ceiling edges around the outside edge of the fan? Can I just sprayfoam or should I cut and try to get a piece of sheetrock in there? Some edges are about an inch and others are about 1/8-1/2". I'm just concerned because of it being in the bathroom and don't want to add moisture issues to the mix!

Also, I found they put the effort into blocking drafts under the kneewalls by standing up a piece of drywall in the opening...no caulk or insulation...and the drywall wasn't even attached. And, in pulling up the insulation for the bath fan, I've discovered that there's 3 sheets of faced insulation layered in the ceiling/floor joists. It looks like there used to be blown-in insulation, but to compensate for what was missing, they just layered batt insulation in there instead. The fact that they used faced batts (and put them so the facing of all 3 layers are facing the attic)...will that cause problems?

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Old 03-09-2012, 11:35 AM  
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Fitting the fan from above may have a little easier to get a close fit. Stopping any air flow is important and if the cover will hide your foam a guess that would work. The drywall left in the nee wall was someones trick for not hauling the garbage out. The faced insulation should be faced to the drywall.

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Old 03-09-2012, 07:47 PM  
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Quote:
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Fitting the fan from above may have a little easier to get a close fit.
No. It's an Air King BF90 (I think) and it is set up to be installed into a support bracket from underneath. Trying to get it in from above can only be done with lifting the arm of the bracket up and that defeats the purpose because it's to hold the fan up and against the joist. It's kind of like an upside down L with 2 little lips on the ends. You tilt the fan housing so it sits in the bottom lip then push the fan up until it clicks and locks into the top lip.

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The faced insulation should be faced to the drywall.
I figured that, but my concern is about the other 2 layers. They also have facing on them and I was wondering if that extra facing will cause issues since it's between the layers of batts?
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Old 03-11-2012, 09:45 PM  
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I guess you could just remove the paper off the extra batts.

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Old 03-12-2012, 09:04 PM  
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I guess you could just remove the paper off the extra batts.
Good idea. Lot of work though. Not looking forward to it. Anyway, as I was exploring more up in the side attic (since I was measuring the piping for the bath fan). I found this:

The first pic is a hole in the exterior wall. It goes all the way down through the wall and if I'm guesstimating correctly, it exits into the basement about 6-8" below the kitchen subfloor. I thought it odd that I could feel cold air BLOWING into the basement, but this hole could explain it since there's plenty of air movement in the attic...especially there where there's a handmade vent in the fascia board directly at the end of the cavity. Thoughts on how to remedy this? I was thinking to pour concrete down it to fill it, but I don't know if there's any other exits besides the basement and don't want to risk that catastrophe.

The 2nd pic is a gap running the length of the gable wall including underneath my son's exterior wall with the windows on it. Since it's a similar kneewall insulation issue, would I do the cavity the same way or should I attempt to clean out the dirt and resident insects and foam up the crack? The gap looks into the backside of the dining and kitchen walls.

The 3rd pic is the corner of the 2 exterior walls and the hole is the precast hole of the block. That hole is directly over the corner of my kitchen. I have a tall cabinet in that corner and when you open the cabinet doors, you feel like you're opening a freezer with the blast of chilly air that comes out of it. I pulled off the pegboard because it was moldy and the plaster or whatever is starting to crumble of the wall behind it, but the draft was coming from the edge behind the cabinet closest the the corner of the 2 ext walls. This isn't the only spot that I see the precast holes of the blocks exposed, but are they an issue? I've also found perlite in the attic at least on the back side of the house...good, bad, neutral?? I haven't touched the front side attic yet - not that anxious to either.

Dang it! If I wanted a fixer-upper, I would've paid a fixer-upper price for the house! I am SO tired of fixing everyone else's neglect or laziness. Oh well. We're here now.

Thanks again guys for any help!
2012-03-12-22.14.49.jpg   2012-03-12-22.15.29.jpg   2012-03-12-22.16.36.jpg  
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Old 03-13-2012, 12:31 AM  
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Is this house built out of concrete block with stocco over foam on the outside. If it is the holes exposed to the attic should be at
least covered with insulation.
The perliet insulation should not be desturbed, If you have to move it to work, you should vacume it up to keep dust under control.
The first picture, can't tell how big it is or what it is but the simple answer is firestopping. Solid wood, plywood or drywall in the attic and basement so a fire hasn't got a free run from one floor to another.
The second picture. Can you explain better what we are looking at.



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