help with different wall constructions and some advice

[mångstekta]

A bit of a poll between these 2 suggestions...

I'm having a bit of a dilemma regarding quotes for our future house. There are different constructions of the same type on the 2 that are the top contenders... A bit of background info is that I will order a shell with a finished exterior, the rest I intend to do myself on the inside.

Option 1: great guys who do the work, very good quality, possibility to buy materials through them and borrow stuff, and help with things you're unsure about.

145mm horizontal cladding
battens
exterior gypsum
45x190
plastic
horizontal 45x45mm
OSB
gypsum

This option will come with the horizontal 45mm exposed, so I can install the electrical myself.

Option 2: cheaper, but with somewhat poorer service, although good to deal with, occasionally fluctuating quality, possibility to buy materials might be available... maybe.

145mm horizontal cladding
battens
exterior gypsum
45x45mm horizontal
190x45mm
plastic
OSB
gypsum

This option comes as a finished wall; they will install the electrical wiring when assembling the walls.

The question is not what I should have instead, but which of these you would choose... is there any difference in "energy efficiency" between them?

What would you choose?

Thanks for your answers!d^_^b

 

[b8q]

Would have chosen option 1 every time, partly for the skilled craftsmen but also because it's easier to change electrical installations afterward with an installation layer AND because you don't puncture the vapor barrier with every screw when mounting things.

 

[Niklas_1]

Agree with b8qs's argument, definitely #1. If they are also better to collaborate with, that's even better.

 

[mångstekta]

then we are on the same track at least, unfortunately there's a LITTLE difference in price... still... as we haven't finished discussing yet but about 300000kr.... at the moment

 

[Jojosep]

Alt 1 agrees with the previous one..

 

[andersmc]

Then we are on the same page at least, unfortunately, there is a LITTLE price difference... yet... as we haven't finished discussing but about 300000kr.... at the moment

Three hundred thousand in difference, on just a frame? There must be more differences than whether the horizontal rule is on the outside or inside.

 

[mångstekta]

Three hundred thousand in difference, on just a framework? There must be more differences than the horizontal rule being on the outside or inside.

yeah the price ... No, it's an estimation by me, both have calculated the same but "everything" material comes with the inside on option 1, so it ends up with a finished plastered inside (50mm insulation + OSB on interior walls) moldings, battens for the ceiling and floor joists for underfloor heating + milled chipboard, window sills + gutters and work for double-folded sheet metal roof that's probably the biggest items that differ, but then the price difference is about 600,000 SEK instead :x

(the house will otherwise be about 210 sqm in 2 full floors)

 

[Mikael_L]

Yes, the walls are identical except that one has the cross-bracing on the outside and the other on the inside.

Considering it is a horizontal panel, I would choose option 1 every day of the week (unless there's something else that differs that I needed to take into account, like a price difference. )

But technically, that wall is better, almost perfected.

Option 2 has the disadvantage that all electricity goes through the plastic everywhere, and everything you attach to the walls also makes holes in the plastic. Otherwise, that option doesn't have any major weaknesses.

 

[Mikael_L]

Or you choose alt2 and nail it yourself to a crossed 45x45 on the inside of the plastic.
It probably doesn't cost that much.

 

[-PLM-]

Check with Alt.2 if they can deliver sparse paneling between plastic and osb, alternatively omit gypsum and osb and do that part yourself or subcontract that part?

 

[mångstekta]

the problem with option 2 is that the windows are mounted at the very edge of the outer wall, so there's a risk of cold draft if the wall is made even thicker... unfortunately, there's already a bit of a problem with that in their house... so mounting with 45 on the inside probably won't work there, I think... they preferred not to deliver without plasterboard.

Going to fight a bit with option 1 this week or next, then we'll see how they counter with

 

[Mats]

Joining the choir. Alt 1 is the wall I prefer.

 

[mångstekta]

d^_^b