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3 Answers

Mitsubishi mini split questions

I am replacing an old heat pump in my Boston area condo unit (middle floor and attached units on each side). I wanted a hyper heat ductless mini split (Mitsubishi FE series) but it only goes to 18k btu. Would I be better off with this or with the GE series which is sized correctly (24k btu)???
The contractor wants to leave in the old (1985) heat pump as a back up. Does this make sense?

In GBA Pro help | Asked By Ann Shef | Aug 11 15
3 Answers

Need some advice on flashing a window in relation to the housewrap and exterior foam

Need some advice on flashing a window in relation to the house wrap and exterior foam.

Purchased a house that was a foreclosure and had been empty for several years. Just started the remodel and when replacing a rotted window we found termite damage. So we took the wall down to the studs and started over.

New OSB sheathing, Tyvek, new construction window flashed with a slopped sill and tape flashing. Basically followed the steps for an ‘innie” window.

In General questions | Asked By Daron Davis | Aug 5 15
3 Answers

Recommendations for range hood and bath fan venting in soffit?

I am building a home in climate zone C4 and am trying my best to limit penetrations in the metal roof. I have been thinking of trying to vent both a bath fan and range hood fan out my roof soffits. I am also planning on using continuous soffit vents. Does anyone have any advice or do's and don'ts around this?

I was thinking of stoping my continuous soffit vents for the 2' truss bay that I install the exhaust vents in. Am I thinking of this right? Or is there a better method?

In Energy efficiency and durability | Asked By Kail Zuschlag | Aug 9 15
2 Answers

What screws to use for vinyl siding with 4" polyiso exterior sheathing?

I've put the cart ahead of the horse on a reno I'm doing it seems. I have installed 4" of polyiso rigid insulation over the exterior of my house and will be covering that with vinyl siding that I already have waiting for install.

In General questions | Asked By Tim Hawn | Aug 12 15
8 Answers

Do I need to remove our unused chimney?

There is a short unused brick chimney in our attic. It has been closed off for years & does not go thru the roof. We had a metal roof installed and they did not put soffit vents back in...only vented at ridge cap....now I have a huge condensation issue. I have had blown in insulation removed and am having soffit vents installed...my husband says the chimney is adding to the problem due to bricks holding moisture. I think if we stop the condensation with proper ventilation that the bricks will not draw much moisture from the cold air.

In General questions | Asked By Melody Fronsdahl | Aug 10 15
5 Answers

Lunos E2 HRV

Does anyone have experience in Canada getting permission from local building inspectors to install the Lunos e2 HRV's? We have been shut down now for months trying to get sign off on them for 540 sq ft micro-lofts we are building in Halifax (urbanrenewable.com). Locating tangible evidence the units have been installed elsewhere in Canada will establish credibility. We have performed a blower door test and engaged local mechanical engineers to vouch for the equipment based on the data established in the test, however, we are still facing opposition from compliance.

In Building Code Questions | Asked By Kerry Lynch | Aug 11 15
3 Answers

Should I block the gable vents now that the house has new ridge vents?

I just had my roof reshingled for the first time. The contractor installed ridge vents. I already have soffit and gable vents.
Should I block the air flow coming through the gable vents?

In General questions | Asked By John Paresky | Aug 9 15
4 Answers

Design for a ventilated low-slope roof

We are building an energy efficient house in central Vermont. Part of the house is one story and has a "shed" roof with a 3/12 pitch in which the ceiling is parallel to the roof (the highest point of the cathedral ceiling is 12.5 ft). Our architect wants us to build a cold, ventilated roof based on ideas from Joe Lstiburek.

In Plans Review | Asked By Timothy Denny | Aug 9 15
5 Answers

Treating PT end cuts in a sealed crawl space?

What products are you using to treat the end cuts on PT sill plates when building a house with a sealed crawlspace (or basement)?

The product at the link below, while effective, might not be suitable due to toxic fumes.



In Green building techniques | Asked By Bill Daugherty | Aug 8 15
6 Answers

Best practice to caulk clapboard and corner board area?

It seems that general practice is for the intersection of horizontal clapboards and corner boards to be caulked...a bead of caulk over this intersection after siding installation. But I've also seen advice about not doing this because the caulk can/will fail and trap water.

In General questions | Asked By Brian P | Aug 11 15
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