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Thread: ice on house

  1. #16
    Test, Don't Guess! cacher_chick's Avatar
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    Quote Originally Posted by mcconnellplumbing View Post
    Well, its been in the low 70's in OK the last two days!!!! Will get into the low 30's for a couple of days then warm up to the low 40's for daytime highs after that. Ah!!!!
    We are coming to your place...... our forecast is for 12-16" of snow this week.

  2. #17
    DIY Member Barry J's Avatar
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    That's what I think I'm going to do is , I have plywood flooring almost out to the end, I'll just get a couple of pieces of cardboard and lay on them to attach the baffle vents, then use that 2x2 idea to pust the insulation out. What I have now looks like pieces of insulation just thrown out there, and what happens is the wind comes thru the soffit vent and blows it around. I want to use rowed out insulation, any suggestions on what kind or any other ideas.
    thanks
    Barry
    BTW: the calcium choride in the pantyhose, is to lay ontop of the ice dam so that it would melt the ice...not to wear....but to each there own...I work in a hospital, I've seen worse.

  3. #18
    Test, Don't Guess! cacher_chick's Avatar
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    Not sure what you mean by "rowed out". I used unfaced fiberglass batts; one layer runs parallel to and between the joists and the 2nd layer runs perpendicular on top of the first. Any insulation should be installed loosely (do not compress). Before laying any insulation, seal up all ceiling mounted electrical boxes and holes where wires or pipe is run into the lower levels. Fiberglass insulation is almost worthless if there are air leaks, so you want the leaks sealed up first.

    I wore coveralls taped shut at the wrists and ankles, a hat, and a dust respirator. I still itch thinking about it.

  4. #19
    General Engineering Contractor ballvalve's Avatar
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    Do a search for california foreclosure houses. Cheap and dont even have gutters. Stay under 1500 foot elevation.

  5. #20

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    Be careful with that salt. One year our front awning was packed with ice. I mentioned to my husband back then, I would throw alittle bit of rock salt up there which he replied, " don't do that." But, I saw other people on the road losing their front awnings, they were falling off. Now, when I crawled out onto the awning, he didn't like that either. lol, so, I did the usual wifey thing, I paid him no mind. I threw a bunch of salt up there. Wow, the ice was gone. Come spring we started to get the nice gentle rains, then, heavier rains, but we liked to sit on the front porch like 2 old people and listen to the rain. Well, it turned into alittle more than listening to the rain, we felt the rain, like we were sitting under a water sprinkler. He turned to me with water running down his face into his shirt, and asked, " you know all the ice that was up there?" I said, " yeah." He then asked, " you threw salt up there didn't you?"

    So, it turns out, he maybe was right, only maybe, since a man, is never completely right. Salt or chemicals can do all kinds of things unknown, to all users.

    ... and, yes, I knew what you meant about the pantyhose, lol.

  6. #21
    DIY Member Barry J's Avatar
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    Yeah, "rock salt" is a no-no,,,that can also stain your shingles...that's why you use calcium choride

  7. #22
    In the trades Dana's Avatar
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    Quote Originally Posted by Barry J View Post
    here are some pics of the ice on my house, attic insulation above the bathroom, and the ice dam
    The middle picture shows mold/rot where the wood has gotten wet- this is clearly not a recent phenomenon, and is likely to be air &/or heat leaks through that below code-minimum fiberglass in the attic. (Cookie has it right- whether they sealed & insulated the wall properly or not, you DEFINITELY need more insulation!)

    Keep the the soffit & ridge ventilation scheme using soffit chutes, and add at least 6" (R20+) of blown celluose over the fiberlgass. Using R19 batts would help, but not half as much as blown cellulose for tow reasons: Batts cannot fill in the compressions and voids in the original insulation, whereas blown goods inherently will, then, low-density fiberglass allows too much convection in a cold-side up horizontal application and performs to a much lower R when you need it the most- R38 fiberglass performs closer to R20 in an attic app when it's below zero, as it has been recently.

    With a cellulose overblow you restore the R value of the original insulation- no need to remove it. If you put up some cardboard strips as depth guages (staple them to the joists), an mark them 15" up from the ceiling sheet-rock below, then fill in to a level smooth even depth you'll be hitting around R50, which is above code minimum, but still cost-effective in a MA climate, and far more likely to fix the ice-damming and shower condesation issues than going code-minimum with batts. You can probably even get 3/4 of it payed for through a MassSave weatherization subsity, which would be less than the cost of the material as a DIY. Whether contracted out or DIY, use borate-only /sufate-free material (most of the stuff at box stores have sulfates, which can be corrosive to metals when wet). If contractor, go with a "stabilized forumla" that contains water-activated adhesives that will dramatically reduce settling and redistribution of the material by high winds whistling through the soffits. If DIY, and in a high-wend location, use a dry-blown borate-only, and use a garden sprayer to lightly dampen the top surface near your soffit chutes, which will cause it to crust over making it wind-resistant. (In MA National Fiber of Belchertown distributes their borate-only "Cel-Pak" dry blown material through Kamco, which caters primarily to contractors, but you'd have to rent a blower elsewhere.)

    The top plate of the strucutral studwall (clearly visible in the middle pic) won't be adequately insulated if you just jam some thin chutes in there and blow. It's probably worth a cut'n'cobble on 2 layers of 2" XPS rigid-board, or better yet, use 3-4" EPS bead-board to make the chutes, leaving 1.5-2" of clearance between the EPS and roof deck. (You can buy recycled EPS for wicked-cheap at the Insulation Depot in Framingham, if you do the pick up- they won't deliver in less than tractor-trailer load quantities, but they'll sell in small quantity out of the yard.) Cut to a loose fit, and 1-part foam to air seal it at the rafters and top plate, and try to get the angle right where it meets the top plate.) If you have a contractor doing it, just going with 4" of closed-cell spray polyurethane foam on the top plates would be less labor, and higher R where it counts the most, just make sure they don't seal the soffit ventilation in the process. (4" of mid-density closed-cell Icycnene would be cheaper than generic SPF- slighly less R, but still enough.)

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