Live data from Hacker News

The Pretty Good House

prettygoodhouse.org

191–200 of 339 posts

Re: The Pretty Good House

#191
post #90
post #88

> Even the best windows and doors on the market perform much worse than even an average wall New windows here in Norway are often triple or quadruple glazed, and they have a pretty good R-value; so they are not that much worse than average walls at least.

TIL quadruple glazing is a thing. Is the light noticeably more attenuated through 4 panes of glass compared to 2 or 3?

In the US the rating associated with this loss is called Visible Light Transmission, or VLT, and it can be quite low by percentage, especially in ‘Low-E’ windows designed for sunny climates. The nature of our perception of light intensity means that the use of a percentage of transmission might not be the best measure for the effect. I feel like something like the geometric scale of the f-numbers used in cameras would be more appropriate for how the change in light intensity feels, which I think is the intent of the VLT factor as there is also a Solar Heat Gain Coefficient (SHGC) that relates to the performance of the window in that regard.

Re: The Pretty Good House

#192
post #174

My wife and I have entertained the idea of a bigger house for quite some time. Well, that boat has sailed. Building has pretty much become unaffordable for us, unless we'd move way out to the country side. And I mean WAY out - we would spend a lot more time every day driving everywhere). We'd also have to build a rather modestly-sized home to fit it into our budget. The thing is, the only reason we've started thinkin…

> Except that the old one will be, at its core, still an old house Is this a good thing or a bad thing? I like the idea of the core of my house being true 2x4s made of hardwood, instead of scam “2x4s” where they say it’s because of their sawblades but I’d say it’s because the mills squeeze too many “2x4s” out of a log.

So my house is from the 1950s built in soviet times from whatever they got their hands on. It's in a quiet seaside inner suburb of a baltic capital.

The house is built from wooden railway sleepers arranged vertically, the whole outer wall are those beams next to each other. Structurally I guess much superior to any 2x4.

There was some insulation added in the 90s but it is still crap.

My choices here are:

1. spend a lot of money to redo insulation, change the windows change all the floors, completely redo heating and the result is still a smallish impractical and frankly ugly house inside and out.

2. tear the whole thing down, recycle the materials and build a truly modern, beautiful, practical, energy generating passivhaus. Will cost more, for sure.

3. sell the thing and try to find a similarly good plot and build on it.

Re: The Pretty Good House

#193
post #183

Earlier quoted context omitted.

> Except that the old one will be, at its core, still an old house Is this a good thing or a bad thing? I like the idea of the core of my house being true 2x4s made of hardwood, instead of scam “2x4s” where they say it’s because of their sawblades but I’d say it’s because the mills squeeze too many “2x4s” out of a log.

No one uses hardwood 2x4 for framing houses. If they did it'd add, at minimum, six figures to your home cost with effectively no benefit. You can absolutely choose between grades of 2x4, however, and if you're working with a builder you can specify with them.

> No one uses hardwood 2x4 for framing houses

Not anymore, but we used to.

Lumber was whatever trees were nearby. And cut to the size they were actually sold as.

Re: The Pretty Good House

#194

I'm looking at building a home as a first time home owner in the next few years. One thing I'm wondering is how many headaches can I avoid if I just choose an expensive builder and not try to haggle or save a buck at every turn? I just want a 2-bedroom, 1,000 sq ft bungalow and am willing to pay 60-70% more than the average $/sqft in my city if they do a good job. I'd rather have a nice small place rather than a huge…

Hire an architect. Find the directory of registered architects in your state or country, browse through the listings and chose a few that are within a hour or so of your location that do work that you like. For each architect, choose some houses on the architect’s website and ask if they will put you in touch with the owners and if they would be happy to show you around one of them. Ask the architect what went wrong and how they dealt with it. (Something goes wrong on every project). You should get a good feel for if the architect is someone you can work with from this process, you will be in a relationship with them for at least a year and a half and building is expensive and stressful. If you hire an architect for a full service they will also take care things like permits, sourcing some reliable contractors to choose from, quality control for the build process.

Ask your architect to show you visuals of what the house will be like, I guarantee you you can’t read plans like we can. They don’t need to be hyper expensive realtime ray traced renderings, if your architect works in 3D you can sit with them a look at the computer model we work with day to day, that’s enough to understand what it will be like.

Designing a house with an absolutely fixed budget is only possible if you are building a new build house on a flat serviced site and you give a minimal brief and don’t change it after the outline design and you allow a contingency. This practically never happens. After giving you a lowball hard limit on how much they have to spend I draw them a small house and pretty much all clients like to make their houses bigger as the project progresses. I always warn clients that they are going over budget because of extra floor area and I warn them not to get bamboozled into choosing insanely expensive kitchens and finishes by salespeople, but it still happens on most projects. Don’t make last minute design changes, someone will make a mistake and it will cause a cascade of changes that will cost you more or compromise the design. Don’t base your idea of what a decent budget in $/sqft is on what your neighbour self built 15 years ago, or what someone on a TV program about building houses said; the neighbour typically omits lots of costs when telling them how much their build cost e.g. groundworks, services connections, etc. Likewise the budgets people say on TV are usually absolute bullshit. Also remember that your architect doesn’t have total control over the price; what you get quoted by the contractor is what they think the market will bear and this can change considerably over the course of the 6-12 months it will take to get your permissions and finalise the detailed design.

Re: The Pretty Good House

#195

I'm curious about rain screens. One of the pages says "Perhaps the single most important thing you can do for your walls is to include a rain screen, which is like venting for your walls." How does that work exactly? Here's how I understand it: I would have to cover an entire building with some sort of a skeleton (layer) of wood, with an air gap in between. And it will cause the rain drops to slide down to the ground…

> How does that work exactly? Here's how I understand it: I would have to cover an entire building with some sort of a skeleton (layer) of wood, with an air gap in between. And it will cause the rain drops to slide down to the ground instead of the wall absorbing it.

You have external cladding to protect against bulk water, UV; it is generally metal siding, brick, stucco. You then have a >5mm air gap between that cladding and the next layer of your building:

* https://www.buildingscience.com/documents/insights/bsi-001-t...

This is because moisture will either get through the cladding, or the cladding itself will absorb water (brick, stucco), and needs a way to dry.

You don't need a lot of space behind the clapping, but you need something:

* https://en.wikipedia.org/wiki/Rainscreen

* https://www.dupont.com/products/tyvek-drainvent-rainscreen.h...

Re: The Pretty Good House

#196
post #89

Earlier quoted context omitted.

We just refurbished our house here in Norway. New windows and 10 cm extra insulation. I am shocked how well the windows perform! Ice on the outside, but nice and warm on the inside. Amazing!

It's a bit annoying with new windows that they perform so well that you'll get dew or ice on the outside a lot of the time. Supposedly, windows with an outer self cleaning layer get less condensation, but they're quite expensive.

I expect I would consider that charming, but I can imagine it gets annoying after the first week

Re: The Pretty Good House

#197

I like this, but ROI should never be part of the calculation for home building, it's why we have so much homelessness in the first place.

I think in the context of this book its not so much ROI for an outside investor but ROI for the occupant owner and has nothing to do with homelessness. ROI is important to look at because sometimes the higher efficency upgrade does not have a good payback over its useful life.

Re: The Pretty Good House

#198

I'm looking at building a home as a first time home owner in the next few years. One thing I'm wondering is how many headaches can I avoid if I just choose an expensive builder and not try to haggle or save a buck at every turn? I just want a 2-bedroom, 1,000 sq ft bungalow and am willing to pay 60-70% more than the average $/sqft in my city if they do a good job. I'd rather have a nice small place rather than a huge…

I believe the key is finding a generic contractor (supervisor) who is reliable and scrupulous, responsible and at the same time experienced in the construction industry practices, not afraid of quarrel and confrontation with shady contractors. Money helps as motivator and allows not to rush things through but alone is not a guarantee. Lots of independent and diverse professionals and groups with own agenda and attitude need to act in symphony to produce a satisfactory result. Not an easy feast, despite of the collective wisdom accumulated throughout the centuries construction quality suffers in most cases, to a varying degree, occupants need to get used to and ignore troubles avoidable for long long time in theory (and in practice too with the proper care).

Re: The Pretty Good House

#199

I'm looking at building a home as a first time home owner in the next few years. One thing I'm wondering is how many headaches can I avoid if I just choose an expensive builder and not try to haggle or save a buck at every turn? I just want a 2-bedroom, 1,000 sq ft bungalow and am willing to pay 60-70% more than the average $/sqft in my city if they do a good job. I'd rather have a nice small place rather than a huge…

It’s hard. We just tried that with a design-build firm and they managed some very impressive fuck ups.

If I was gonna do it again, I would:

1) hire a separate, independent architect

2) spend more money on lawyers to review contracts up front

It’s not about haggling over pennies. It’s about catching the big fuckups while they’re little fuck ups. Also double-checking everyone’s math and putting eyes on the work every single day.

Re: The Pretty Good House

#200

I'm curious about rain screens. One of the pages says "Perhaps the single most important thing you can do for your walls is to include a rain screen, which is like venting for your walls." How does that work exactly? Here's how I understand it: I would have to cover an entire building with some sort of a skeleton (layer) of wood, with an air gap in between. And it will cause the rain drops to slide down to the ground…

You basically want something so that if water / condensation / vapor manages to penetrate the siding (and it always will), it will DRY OUT vs absorbing into whatever the next layer is.

As others have described there are wraps. We just used firring strips made out of PVC. Others do it with ripped strips of pressure treated 2x4s.

You SHOULD still do it over the exterior insulation if it is there, so there is a space for things to dry out.

The reason you see old 100+ year old uninsulated houses standing is that, while they were crappy for retaining heat and combatting airflow, they did at least always dry out after they got wet. This is even more important in a modern home where all your materials are preventing that drying out, so you have to plan for it.

Post reply on HN