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4 Answers

Best way to air seal and insulate floor and wall assemblies

I'm remodeling a house in climate zone 4 outside Seattle. The existing exterior walls are 2x4 with 1x8 board sheathing. I want to achieve the required R21 insulation value without having to fur our the wall to achieve a 51/2" wall cavity while also sealing the 1x8 sheathing. The subfloors are 2x6 T&G and I want to seal the floor assembly and achieve the minimum R30 insulation value. What would be the best strategy to achieve these goals?

Asked By Stewart Breslin | Jan 21 17
11 Answers

Insulation for vaulted ceiling

We re-roofed our house this summer and found a lot of damage over our family room with a vaulted ceiling. We replaced the plywood and are now redoing the underside. The roof has a roof ridge vent and ventilation holes in the soffits. We are creating on-site baffles with 1" rigid foam boards. We are planning to use R30C insulation which is denser for cathedral ceilings. The question is do we use faced or unfaced, and do we need to use plastic sheeting as a vapor barrier? We want to get it right this time!
Thanks,
Kim

Asked By Kim Howard | Nov 22 16
3 Answers

Smoke odor

Hi, We are restoring a severely fire damaged home and while many components have been simply removed (down to the studs), the framing needs to be treated to eliminate the smoke odor. Our research has pointed us toward alcohol based shellacs. Some say first use an oil based primer and then the shellac. Can you advise?
Thanks, jk

Asked By Joseph Klockner | Jan 23 17
1 Answer

How should moisture/vapor wetting and drying be considered in this situation?

Details:
- Climate Zone 6, Marine setting
- Stand alone garage(1970's) to be converted to an overflow guest house w/ full bath no kitchen.
- Guest house to be used in summer only.
- Existing structure on a floating slab w/ no vapor barrier beneath, sitting poorly drained soils.
- 20' by 16' area w/ cathedral ceilings, 2x4 walls and 2x8 rafters
- 20 mil vapor barrier to be installed over slab (seams taped), may not be able to extend under existing perimeter walls.
-2x4 sleepers laid flat over 20 mil VB
-1 1/2" xps fitted between sleepers

Asked By geoff summa | Jan 16 17
1 Answer

Northern Michigan un vented, un air conditioned Cabin roof design.

Northern Michigan un vented, un air conditioned Cabin roof design.
After reading several articles, opinions and Blogs I have a better understanding of the moisture vapors that exist and the problems they can create in walls and especially the roof. But I’m a little unsure of the proper design and construction for my great lakes, shore line cabin roof design. I have detailed my current plan below. Could please you give input as to where my design plan is OK or deficient in proper vapor management for this environment and situation.

Asked By mike bard | Jan 17 17
1 Answer

Northern Michigan un vented, un air conditioned Cabin roof design

Northern Michigan un vented, un air conditioned Cabin roof design.
After reading several articles, opinions and Blogs I have a better understanding of the moisture vapors that exist and the problems they can create in walls and especially the roof. But I’m a little unsure of the proper design and construction for my great lakes, shore line cabin roof design. I have detailed my current plan below. Could please you give input as to where my design plan is OK or deficient in proper vapor management for this environment and situation.

Asked By mike bard | Jan 20 17
5 Answers

Should I install a vapor barrier under a LVT (Luxury Vinyl Tile) flooring material?

Existing home has an inordinate amount of moisture/water under the raised wood floor (two-story SFD structure).

Realizing that the moisture should be mitigated by possibly at least installing an impermeable moisture barrier at dirt, I am wondering (assuming owners do not elect to install mitigation in crawl space) if the floor assembly should be as follows?

Existing Plywood Subfloor
Vapor Barrier (6 mil poly)
Plywood Underlayment
Floating Click system LVT

Asked By Bill Reid | Mar 16 16
8 Answers

What to do with torrents off the roof?

Zone 4A, East TN, annual rainfall >50" and downpours can be significant. Upslope lot.

Downspouts will tie into 4" pipe to daylight, but then what? Seems responsible to NOT discharge it down the driveway. But if I discharge it onto the slope it would soon create a local grand canyon.

There will be a 3' garden wall to provide a level grade in front of the house. The 4"gutter drains will exit through that wall in two or three places.

Any tried and true remedies?

Asked By David McNeely | Jan 16 17
58 Answers

Mitsubishi minisplit 8-head system is not keeping up

Back in mid-November 2016, we had a Mitsubishi Hyper Heat MINI Split installed in our house after opening up the first floor of our home and installing some beams to make it more open. We lost duct work feeding the second floor, and had to come up with a solution. We decided on a Mitsubishi ductless system, since I had a smaller version installed in our detached garage and was very happy with it. My uncle did the garage, while I went with one of the Mitsubishi Diamond Dealers to handle our house. After 3 quotes, we decided on a company and proceeded.

Asked By Andrew Simpson | Jan 6 17
3 Answers

Intus Eforte mounting brackets

Question for anyone with experience installing Intus Eforte windows: The brackets I received with my Intus windows seem too wide. There should be a pic attached showing a bracket sitting in front of the track it is supposed to twist into. Online images depict a different type of bracket. All mounting instructions depict brackets with teeth that are only slightly wider than the mounting track. Did I get a batch that belongs with a different window type or something?

Thanks for any help.

Asked By Jim Tyler | Jan 7 17
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