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14 Answers

Insulating a low-slope EPDM roof from the ceiling below

Hi. I recently had an Epdm roof installed on my 140 year old house. It's low slope and meets with a gable roof on the other part of the house. The Gable is standing seam. We had a tapered ISO board system installed as the underlayment to help with drainage and make the edge details easier to deal with. I reframed the roof and sheathed it myself before the roofing contractors started so I could save money. At the time the ceilings underneath the roof were all closed so I installed 4 inch rockwool batts right on top of the plaster/lath of the ceilings below.

Asked By joseph moore | Feb 26 15
8 Answers

Do screws through exterior insulation reduce the wall R-value?

I was in a Net Zero Building class this weekend and there was mention that screws that are used to attached exterior insulation reduce the whole wall R-value by 39%.

The screws are attached from the outside thru the rainscreen, insulation, WRB, sheathing and into the framing.

This individual referred to an article from Energy Design Update (no issue was noted). I'd check but $600.00 for a subscription is too rich for my pockets.....

Any help here on the article or data at least, with other references?

Asked By brad hardie | Mar 1 15
3 Answers

Dana, others, DIY PV, mini split, superinsulate, costs

What would it cost today to roof install 5.6KW of PV DIY?

DIYers are eligible for what rebates in NY in 2015?

Anyone?

Martin a blog on DIY PV and DIY mini split installation?

5,6KW PV for $2/W? $11,200?

DIY 2 ton mini split two heads, $1800x2= $3,600?

Superinsulate a 1,800sqft home, DIY cellulose purchase, 12" walls, 30" lid, $5.000?

These items can be done by one timers, DIYers.

Be nice to have a Q&A with this information on costs all in one thread.
Thanks
aj

Asked By aj builder, Upstate NY Zone 6a | Mar 2 15
3 Answers

Basement finish floor, slab on grade

With the help of this site I insulated and framed my basement (90 year old house, 8-9" concrete walls). I did 2 inches of XPS (EPS in hindsight would have been greener but I had a deal on some XPS), 2x framing with Roxul R-15 in between 2x. Rock is next and then floors.

Asked By Sean Cotter | Mar 1 15
5 Answers

Dense packing cellulose - height of cavity

What are the thoughts out there on how tall a cavity in this double stud wall can be before there are concerns?

Here's the wall:

There's an outer 2x6 wall, 16" O.C., and an inner 2x4 wall also 16" o.c. There's a 6" space between the inner and outer studs, for a cavity depth of 15".

The first floor walls are 9' tall, with an 18" deep floor truss above. In other words, there will be a 10.5' height of cellulose. The second floor is about 8'4".

Asked By Graham Fisher | Feb 28 15
1 Answer

What will fill in a gap between the porch frame and siding?

building screened porch on mobile home, where the frame is up against the home has gaps because of the siding. The insects will be able to come in. what can be put in there to seal it?

Asked By Cindy Bergaus | Feb 27 15
1 Answer

Solar rebate?

In FINE Homebuilding, May 2014, an article by Bob Ritacco: her list: the cost and rebates on a solar system in NY -- state tax rebate as well as state rebate and Energy star rebate .

My solar system is in Mass. I get a small state credit and can find nothing about the Energy Star rebate on their web site .

Can anyone help me If I'm missing something? Thanks.
Randy

Asked By Randy Durbin | Feb 26 15
9 Answers

Signs of a properly sized furnace?

The most common theme I see when people talk about oversized furnaces is reduced runtime & short-cycling.

But what does short-cycling mean quantitatively?

a) 5 mins on, 5 mins off, repeat
b) 5 mins on, 10 mins off, repeat
c) 10 mins on, 5 mins off, repeat

According to the Manual J heat load, my furnace is only 5% oversized. When I set the stat to warm up more than a couple degrees, it does take a while (e.g., more than an hour). I've measured almost 100 degrees from my warmest supply register & 68 degrees at that room's return (rise of 32deg).

Asked By Jeff Watson | Feb 26 15
3 Answers

Is everyone on vacation?

Seems like since the reboot of the website the amount of new content has gone way down.

Lots of "best of fine home building"= Boring=Why pay expensive website fee

Asked By kye ford | Feb 25 15
1 Answer

How to insulate a steel building?

As way of introduction I live in Fair hill MD on an acre lot.I consider myself to be a handyman and not afraid to do most of all the renovations to this gem in the rough!

Asked By Vinny Rucinski, Jr. | Feb 24 15
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