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Spanish tile attic venting

Spanish tile attic venting (post #195956)

MikeStLouis on Mon, 11/22/2010 - 12:48

Energy, Heating & Insulation

I have a client who has an 80 year old masonry house with a gable roof -- spanish tile on 1x skip sheathing on 2x6 rafters. The attic 'floor' is 2x6 joists with beaten-down rockwool between them. The house has radiator heat, but the a/c is a 10 year old horizontal unit in the attic, blowing through much older uninsulated ductwork which we plan to replace. Inside the attic I can see daylight at the eaves, so there's venting there, but not at the hips or ridge. The roof had a major repair job about five years ago; the tile was removed, two layers of felt put down, and the tile replaced.

So the question is, would we be better off trying to condition the attic (which would mean egg-crate baffles between the rafters, then insulation, but how do we vent at the high end of the rafter spaces?) or not (which would mean insulating the attic floor, and around the air handler, and around the new ductwork, and airsealing all the penetrations, which is asking a lot).

I'll bump this post of yours to bring it to the top........ (post #195956, reply #1 of 22)

by calvin in reply to MikeStLouis [original] on Mon, 11/22/2010 - 16:23

but can offer no help in your project.

Except to ask, could a ridge vent be installed? You mention hips, how much ridge do you have and how could you cross vent the rafters (would the skip sheeting do it) so that a ridge vent could work?

Will the house be air sealed from the attic-more closely to the point-will the attic be air sealed from the house (all the way down to the crawl/basement?

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.

http://www.quittintime.com/

ridge and hip (post #195956, reply #3 of 22)

by MikeStLouis in reply to calvin [original] on Mon, 11/22/2010 - 21:25

The house is approximately 26' x 34', so there is 8' or so of ridge. Most of the rafter spaces terminate in hip rafters, not the ridge. I suppose the ideal would be to remove all the hip and ridge tiles, saw cut 1" openings in the sheathing along each side of each hip and the ridge board, put Cor-A-Vent or something similar along the hips and ridge, and replace the hip and ridge tiles. If success were guaranteed, I'd recommend it to the homeowner, but I'm not at all sure that approach could be executed without a whole lot of trial and error -- unless someone on here can say "Oh, yeah! We did that last year and it works like this...."

Here's one (post #195956, reply #6 of 22)

by seeyou in reply to MikeStLouis [original] on Tue, 11/23/2010 - 04:19

Here's one option: http://www.ohaginvent.com/products_clay.asp Or one could install dormer vent(s) or low profile vents near the top.

http://www.grantlogancopper.com/

Too bad they put down the (post #195956, reply #2 of 22)

by DanH in reply to MikeStLouis [original] on Mon, 11/22/2010 - 17:15

Too bad they put down the felt. Otherwise tile over skip sheathing would be self-ventilating.

It might actually be possible to cut out some of the felt near the ridge, through the gaps in the sheathing.

We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy -- sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that. --Thomas Edison

Yeah, but.... (post #195956, reply #4 of 22)

by MikeStLouis in reply to DanH [original] on Mon, 11/22/2010 - 21:29

I don't look forward to telling the owner he shouldn't have spent the money to have the felt replaced -- which he did in part because of roof leaks. And if I tell him to slice through the felt near the ridge and it then turns out to leak then the felt won't be the only thing to go under the knife....

>>Too bad they put down the (post #195956, reply #7 of 22)

by seeyou in reply to DanH [original] on Tue, 11/23/2010 - 04:28

>>Too bad they put down the felt. Otherwise tile over skip sheathing would be self-ventilating.<< It would also leak. All the tile that I'm familiar with needs a good underlayment. There are some types that lay on a grid, but there needs to be a watertight underlayment under the grid. edit: even though paragraph spacing is showing as I type, it disappears when I post. space space space double space triple space

http://www.grantlogancopper.com/

I don't think I have (post #195956, reply #8 of 22)

by DanH in reply to seeyou [original] on Tue, 11/23/2010 - 05:44

don't

think

have

any

trouble

with

paragraphs.

space s p a c e space (post #195956, reply #9 of 22)

by seeyou in reply to DanH [original] on Tue, 11/23/2010 - 13:48

space s p a c e space 12 spaces.

http://www.grantlogancopper.com/

Grant (post #195956, reply #10 of 22)

by calvin in reply to seeyou [original] on Tue, 11/23/2010 - 18:12

It might have to do with typing in html and not clicking on that SOURCE thing at the top of the Reply box.

If you don't use html and don't hit that button first-you get something like wysiwyg...................where the type continues in a paragraph until you hit the RETURN on your keyboard.

I think.

How's it been goin'?

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.

http://www.quittintime.com/

I no longer have any options (post #195956, reply #18 of 22)

by seeyou in reply to calvin [original] on Wed, 11/24/2010 - 13:23

I no longer have any options (source, font, bold, etc) above the reply box. I didn't change anything, just logged on as usual. It's the same on both my computers. I no longer give enough of a [JOBSITE WORD] to try and figure it out. I've been busier than a gigolo with three peckers. Wrecked my truck the other day. Thought I was gonna have to get another one (this one's too old and worn out to put much money into), but I spent a couple of hours with a jack, a crescent wrench, and a tube of PL Premium and you can't hardly tell the front bumper and both turn signals got ripped off. Maybe it will go another 250K. How's life up north?

http://www.grantlogancopper.com/

Well, now all those options (post #195956, reply #11 of 22)

by seeyou in reply to calvin [original] on Wed, 11/24/2010 - 07:03

Well, now all those options have re-appeared. new paragraph space?

http://www.grantlogancopper.com/

and now they're gone again. (post #195956, reply #12 of 22)

by seeyou in reply to seeyou [original] on Wed, 11/24/2010 - 07:04

and now they're gone again. WTF?

http://www.grantlogancopper.com/

boy, (post #195956, reply #13 of 22)

by calvin in reply to seeyou [original] on Wed, 11/24/2010 - 07:29

I don't know what to tell you. This computer stuff is greek to me, but as far as load time-fine, options up above-all work except the font size, whatever that NORMAL means.............SIZE, never did work-they claim it's because of I.E. sounds like rubbish to me, IE isn't some goofball thing-so what if the purists insist on the other stuff.

But then again, you can't see it.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.

http://www.quittintime.com/

Actually, IE is (post #195956, reply #15 of 22)

by DanH in reply to calvin [original] on Wed, 11/24/2010 - 13:03

Actually, IE **is** "goofball" -- it doesn't adhere to any of the industry standards, and M$ changes it whenever they feel the whim. Keeping a complex web side "good" for IE can be a major challenge.

I guess NORMAL changes the type size for me.......... (post #195956, reply #14 of 22)

by calvin in reply to seeyou [original] on Wed, 11/24/2010 - 07:34

and makes it bold....................

Beats Me!

And then when I paragraph..................it goes back to NORMAL..............................

ah ha! Now I might be able to emphasize

BITE ME!

things here have cooled off. Going for an early (3pm) threemanleague today-it is Wednesday after all. Brisk it will be, might make it to 40.

Joyce is well, her 94 yo mother is too.

Got tickets to the Cavs v. Miami for next Thursday, should be an eye opener. Big OSU/MICHIGAN game sat, in the warm house. Still can cut and chop a little, most of that is done. Work, some-nothing to write home about. A nice kitchen first of the yr. Hope the phone keeps ringing.

Have a good Thanksgiving and hey to the wife!

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.

http://www.quittintime.com/

Try clearing your cache. (post #195956, reply #16 of 22)

by DanH in reply to seeyou [original] on Wed, 11/24/2010 - 13:03

Try clearing your cache.

cache (post #195956, reply #17 of 22)

by seeyou in reply to DanH [original] on Wed, 11/24/2010 - 13:21

cache cleared. testing testing testing control panel is still missing.

http://www.grantlogancopper.com/

Was using Firefox. Logged in (post #195956, reply #19 of 22)

by seeyou in reply to seeyou [original] on Wed, 11/24/2010 - 13:27

Was using Firefox. Logged in w/ IE. Control panel is back.

space

Sorry for the Hijack Mikestlouis.

http://www.grantlogancopper.com/

I'm using Firefox (3.6.2) and (post #195956, reply #20 of 22)

by DanH in reply to seeyou [original] on Wed, 11/24/2010 - 14:40

I'm using Firefox (3.6.2) and I'm having none of these problems.

I attached a picture and the (post #195956, reply #21 of 22)

by seeyou in reply to DanH [original] on Fri, 11/26/2010 - 12:01

I attached a picture and the controls all came back.

and the

enter

button

works now.

Weird.

http://www.grantlogancopper.com/

Preview	Attachment	Size
	space.jpg	177.32 KB
	bt.jpg	142.09 KB

It's most likely a cache (post #195956, reply #22 of 22)

by DanH in reply to seeyou [original] on Fri, 11/26/2010 - 12:44

It's most likely a cache problem of some sort, either the cache in your browser, or a cache held by your ISP. Caches are the bane of web page design.

Rather than ridge venting you (post #195956, reply #5 of 22)

by DanH in reply to MikeStLouis [original] on Mon, 11/22/2010 - 21:36

Rather than ridge venting you could perhaps have several individual vents installed along the ridge somehow. Less tear-up to the tile that way.

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Spanish tile attic venting

Spanish tile attic venting (post #195956)

I'll bump this post of yours to bring it to the top........ (post #195956, reply #1 of 22)

ridge and hip (post #195956, reply #3 of 22)

Here's one (post #195956, reply #6 of 22)

Too bad they put down the (post #195956, reply #2 of 22)

Yeah, but.... (post #195956, reply #4 of 22)

>>Too bad they put down the (post #195956, reply #7 of 22)

I don't think I have (post #195956, reply #8 of 22)