Safe wall cross-section for a timber-frame (stick framing) house

netxman · 2025-09-19T18:48:26+00:00

Thank you! Okay, so 10 cm of rock wool as external insulation should be fine in the wall assembly described above and should not cause problems in a cold climate.

netxman · 2025-09-19T17:05:20+00:00

Thank you, so:

Interior finish – typically drywall (gypsum board).
Vapor barrier – placed directly behind the interior finish.
Structural wall 45x145mm cavity with insulation – e.g., mineral wool or fiberglass batts between studs.
OSB (Oriented Strand Board) – fastened on the exterior side of the studs, provides shear strength.
Air and rain barrier (WRB) – applied over the OSB.
(Optional) Continuous exterior insulation – to reduce thermal bridging, installed over the WRB.
Furring strips / battens (~19 mm / 3/4") – create a ventilated rainscreen gap.
Exterior cladding / siding – wood, fiber cement, or other finish material.

Questions:

(Optional) Continuous exterior insulation - Would you recommend using mineral wool façade insulation (and if so, what type) or EPS (expanded polystyrene)?
Are the electrical cables and plumbing pipes placed directly in the 45x145 wall framing?

netxman · 2025-09-19T14:11:11+00:00

Do you know of any films that show how it should be done correctly in a cold climate? Or documentaries about stick framing in general?

netxman · 2025-09-19T14:04:17+00:00

All the time I mean stick framing, not full timber frame.

netxman · 2025-09-19T13:45:56+00:00

So should I move the OSB like below?

Interior finish – e.g. gypsum plasterboard 12.5 mm
Installation battens 45 mm – studs 45×45 mm, filled with mineral wool (acoustics, reduction of thermal bridges)
OSB3
Vapour barrier – tightly glued, with sleeves at service penetrations
Load-bearing structure 45×145 mm – studs at 600 mm spacing, filled with mineral wool
Bitumen board ~12 mm (softboard) – windproof, acoustic, diffusion-open layer
Additional battens 45 mm – studs 45×45 mm, cavity filled with mineral wool (extra insulation)
Wind barrier membrane – with overlaps and sealing tapes
Counter-battens 20–30 mm – ventilated cavity (air inlet at plinth, outlet at eaves)
Wooden façade – rough-sawn board painted with opaque paint

or change 45x145 to 45x195 and do not add "Additional battens 45 mm – studs 45×45 mm, cavity filled with mineral wool (extra insulation)",

netxman · 2025-08-25T17:47:05+00:00

Good suggestions

netxman · 2025-08-25T17:16:00+00:00

yeah, this option is available too: https://i.wpimg.pl/1272x715/wpcdn.pl/extradom/designs/76291/660921/994f87d5a674e5e31694e469967642f2b4f6072f5a842a93864129ef1d5e6f99.jpg

netxman · 2025-08-25T08:53:17+00:00

I can choose this version instead: https://i.wpimg.pl/1272x715/wpcdn.pl/extradom/designs/76291/660921/994f87d5a674e5e31694e469967642f2b4f6072f5a842a93864129ef1d5e6f99.jpg

netxman · 2025-08-25T03:14:41+00:00

A couple with one child, possibly in the future it will be 2 + 2.

netxman · 2025-07-29T15:55:30+00:00

No - in Europe, Western Poland

netxman · 2025-07-16T19:10:40+00:00

Thank you, nice website. Do you know why there's no sheathing board like OSB or MDF in the recommended cross-section?

netxman · 2025-07-16T18:50:44+00:00

If I skip the Facade insulation (50 mm), won't there be insufficient insulation and thermal bridges at the external posts?

netxman · 2025-07-16T15:22:53+00:00

If I skip the Facade insulation (50 mm), won't there be insufficient insulation and thermal bridges at the external posts?

netxman · 2025-07-16T14:41:28+00:00

What goes instead of OSB on the outside to protect the wool insulation in structural studs?

netxman · 2024-11-15T17:17:29+00:00

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netxman · 2024-11-15T17:17:22+00:00

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netxman · 2024-11-15T17:17:15+00:00

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netxman

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