Archive for the 'Windows & Doors' Category

November update: floors, doors and sills and kitchen

We’re on the final push. In the last week we finished laying the wood floor on the second floor. It will be sanded later this week, then we’ll apply a natural whey-based sealer. Warren also installed the interior doors and window sills on the second floor. They will get a coat of paint next week.

Other progress includes building a base for the kitchen cabinets and island, and assembling the cabinets. We also bid out the kitchen counters and ordered all the appliances on Black Friday. Jill will post later this week on our appliance selections.

Activities for the rest of the week include laying the wood floor and installing the interior doors on the first floor. There’s also some small remaining sheetrock and taping to finish the island.

Then there’s all the odds and ends, final electrical and plumbing hookups. Stairs. Trim. It’s going to be a busy December!

March Update

Progress was still choppy this month, but we did manage to accomplish a few items.

  • Framed and insulated half of the windows
  • Initiated contact with a few heating and ventilation contractors to start the bid process
  • Installed telephone line
  • Received all our approvals for the solar installation, but we’re still waiting on the building permit to come through. Once that is complete, we can schedule an install date for the solar system.
  • Dug the trench to the house and ran the power into the basement. We had to drill another hole in the foundation because we didn’t plan a big enough sleeve when we poured the foundation walls. But we were happy to get this in before the forecasted 6 inches of snow tonight.

The next big item is getting the siding up. It is currently taking up most of the first floor space. We need space to work before we start the plumbing, electrical and venting rough-ins.

Window framing and insulating detail

This is the story of how we ended up with our window box detail.

We decided early on to use advanced framing techniques and work on a 24″ module. In early drafts of the design I used window widths that fit between studs. The advantage to this approach is that you use less wood, smaller headers and fewer jack studs. Less wood means a bit less money spent on framing materials and fewer opportunities for thermal bridging and cold spots around openings in the envelope.

Sounds great in theory, but then I discovered how difficult it is to fit windows into a 24″ module in a small house. Aesthetically we wanted the windows to line up with doorways and the spaces inside and frame the view, and also make use of passive solar. Eventually I gave up on fitting narrow windows into the structural grid.

The tradeoff was that almost every window interrupted the path of the load, so the headers above the windows had to be beefed up and more jack studs were required. Adding more structure around the window opening means more bridging from the outside to the inside of the window box, short-circuiting the insulating value of the double-wall construction.

We also decided to use a rainscreen detail on the outside of the wall (see Final Energy Analysis and Recommendations), which pushes the 3 1/4″ thick window frames out a bit, leaving a deeper window box inside. This exposes 4 1/4″ of exterior structure (2×6′s, 1 king stud and 2 jack studs) around the window frame. Doing the math, 4.25″ x 1.25 R/inch = 5.3 R, which is not a lot compared to the 40 R of the double stud wall.

Even though there are 12 window openings in the 2 bearing walls (north and south facing) it is only a small amount of bridging. Doing the math again, we have roughly 863 sf of interior walled surface area on the north and south walls, and 29.5 sf of bridging area next to the windows. That is roughly 3.5% of the overall interior wall surface.

Our contractor, Warren, came up with several good ideas to minimize the cold spots created by the bridging. First, move the header up to the top plate to add some space and insulation between the header and the top of the window frame. Second, add a layer of 1″ rigid insulation around the inside of the window box, to which the drywall will be attached. This layer of insulation is small (R5) but it doubles the R-value at these locations and breaks the bridge between the outer structural wall and the interior window box.

Earlier this week Warren added the bevel framing and insulation for one window. It goes together quite well, but in hindsight I would have just insulated the problem areas, the 2 sides of the window next to the studs, rather than the entire window box.

This weekend we are working on the remaining windows. Luckily the sun is out this weekend which makes working in the house fairly easy even when the temps outside are still below freezing. The passive solar is already working!

No more window woes

Today a local window repairman for Accurate Dorwin came out to fix our window woes. George, from Geo Glass in Vermont, seemed very experienced with our windows. He swapped out four sashes in a few hours and was busy adjusting the remaining windows when I left. He will have to return with some new parts to finish the job.

Overall my experience with Accurate Dorwin has been positive. They make a great product but I think they could exercise a lot more quality control before the windows leave the factory. Their customer service has been fairly good.

 

Updates

Windows

A window repair person is scheduled to be at the site Monday morning to swap some sashes and glass units, and adjust the remaining units. We’re hoping this goes smoothly and we don’t find any other issues.

Driveway

We officially own our entire driveway as of yesterday when the final papers were filed. Before yesterday, the center section of our driveway was still on our neighbor’s land. This adjustment has been in the works since April.

Electric Company

National Grid is like any large organization, lot’s of forms to fill out, they never call you back, the left hand doesn’t know what the right hand is doing. I have spared the blog my venom, but this is getting to be a chapter right out of the movie Brazil. I have to report that we still don’t have a scheduled date for electric service to be installed to the house. It could be Spring before we have power from the grid.

Solar Electric

I really wish it made economic sense to go off the grid completely, because so far we’ve gotten a much better response from one of the solar vendors in our area, GroSolar. They came out to the house to do a solar survey and sent us an estimate that same night. To summarize, after all rebates and tax credits, we’re looking at spending roughly $14k for a 6.9 kW system that should bring us to net zero in energy usage. Pretty awesome.

Window and doors update, siding and snow arrives

Yesterday we had a sales rep for AccurateDorwin come out to the site to see first hand our window woes. He confirmed our findings and promised to set things straight. But as of today, still no official word.

In more positive news, two of the three doors have been installed. We now have a weather protected space to work while its 29 degrees outside. Too bad all the work is on the outside.

Speaking of outside, our siding has arrived. It’s all primed and ready to go in 20 foot long pieces of hemlock. And it’s just in time because we had our first snow yesterday.

We’re still waiting on the metal roof. It was suppose to be delivered last week.

On a final note, I met today with a solar PV installer from GroSolar to get an estimate. More on this when I get a quote from them, hopefully in the next day or so.

Window Woes

As we finished installing the windows Tuesday we started to notice some things that didn’t add up. In our initial review everything seemed to be correct. But upon closer inspection we noticed that the tempered glass unit (2 mulled casements) that was to be used in the bathroom only contained one tempered window, the other was not tempered. So I emailed the AccurateDorwin rep to say we were missing a tempered glass window.

Then we found that one of the larger units on the first floor (pictured above) had a tempered glass window. We had found our missing tempered glass casement. All the south-facing operative windows are the same size, so theoretically we should be able to swap them out. Then we found that the bathroom unit really is the bedroom unit, it has the special egress hinges. So essentially 3 of the window units (out of 14) were assembled somewhat randomly.

Disappointing. Now we’re waiting to see how their customer service responds. Stay tuned…

Window installation begins

We started installing windows today. We started with the two smallest windows on the north side. First we built the plywood box that spans the inner and outer stud walls (see interior view). Then add a spacer frame at the exterior face that will give us space to line the box with 1″ of rigid foam. Then we tape the entire opening using a rubberized-asphalt tape (Grace Ice and Water Shield) (step 1). We start at the sill, then the jambs and then the header. The tape seals the sheathing to the frame. We are using a drainage plane detail so we staple on furring strips around the rough opening over the tape (step 2). Then insert the window and tape the window flange jambs and header to the sheathing (step 3). The sill flange is not taped to allow drainage.

Later we will shoot low expansion foam into the gap between the window and frame from the inside to air seal the window to the exterior shell.

Windows have arrived!

The windows were delivered Thursday (see our earlier post on our window decision). We have 14 window units in 6 different sizes/configurations (see window schedule). We were waiting for the windows to verify all the dimensions for the window rough openings. We’ve also settled on our window flashing details. Most details cover drainage or air sealing but not both. It took a bit of research to determine the right approach. We’re going to try to have all the windows in before Thanksgiving. I’ll post some pictures of the installation process.

November Update

Lots going on the last few weeks. All major framing and sheathing is complete, including the gable ends and the basement walkout. The wood siding, metal roof and fiberglass doors have been ordered. The windows are tentatively scheduled to arrive next week. Warren has been working like mad to get the house closed in before Winter settles in.

Over the weekend we started priming the roof trim boards that need to go on before the metal roof, and one of the three exterior doors.


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