Renovating 1970s houses in Norway: what fails, what the rules say, and who does the work

The wall is the one to understand first. A 98 mm stud gives you 98 mm of insulation, so the wall U-value comes out at about 0.41 W/m²K (NTNU and SINTEF's typology for 1971-1980 houses). Outside it there is usually a wind barrier of asphalt board and a vertical or horizontal board cladding, painted, with the original nails. Inside, a polyethylene vapour barrier and plasterboard. When the cladding comes off, the whole wall is open and you decide how much to add.

In the 1980s the frame stayed at 98 mm but builders started adding 100 mm plus 50 mm thermal-bridge breakers outside the studs, which is why the typical 1981-1990 wall is a little better at 0.32. The roofs of that decade are often worse than the 1970s ones: prefabricated trusses with 100 mm laid on the ceiling joists, U-value 0.36, and a flat or very low-pitched roof on many of the houses, which is where a renovation usually starts.

The windows are sealed double-glazing, air-filled, with a U-value around 2.6 to 2.8. The bathroom has a tiled floor over a screed, a plastic-sheet membrane if you are lucky and none if you are not, and a cast-iron drain. The wiring is copper, but the fuse board is the original and the number of circuits was decided when a house had one television.

DiBK's own guidance says most water damage in wet rooms comes from leaks around pipe penetrations and from floors without fall to the drain. That is a description of the 1970s bathroom: tiles on screed on a timber floor, pipes through the floor with no collar, a drain that sits proud of the tiles, and a plastic sheet at best behind the shower wall. Fifty years of showers later the joists under it are what the carpenter finds.

A proper rebuild is carpentry first. The floor is opened to the joists, damaged timber replaced, a new build-up laid with fall, a membrane taken up the walls and clamped to a new drain, and only then does the tiler come in. Norway's Fagrådet for våtrom publishes the industry's wet-room standard, Byggebransjens våtromsnorm, which is what a serious crew works to.

Arbeidstilsynet's rule is simple: any company that handles asbestos-containing material in a way that can release fibres needs a permit from the inspectorate, and the people doing it need training. In a 1970s house asbestos turns up in eternit cladding and roofing sheets, in floor tiles and their glue, in pipe lagging and in some plaster and fillers. You do not sand it, cut it or break it. You stop, and a licensed crew removes it.

Windows are the other one. The PCB in a 1965-1975 sealed unit is in the sealant between the panes, and the year is usually stamped on the spacer. Ruteretur, set up in 2002, runs the national return scheme: the units go back whole, cracks taped, on a pallet, never in the mixed skip. The same return route takes chlorinated-paraffin units from the later period.

None of this makes the work dangerous if you know it. It makes it documented, and it is one more reason a 1970s renovation is a job for trained people rather than for whoever is cheapest.

The rates are the same as on a new-build site, but the work is different: smaller crews, more decisions on the spot, more trades to coordinate, and a customer who lives in the house. That is why employers pay experienced renovation carpenters at the top of the band and keep them through the winter. A house is renovated from the inside when it is dark outside.

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Enova's support for wall and roof insulation and for windows was launched in August 2025 (Byggstart). The rates on this page are what enova.no shows on 30 August 2026; if you read this a year later, check the site. A renovation that makes sense at 25 per cent support still makes sense without it, but owners do time their projects around the scheme.

The ROT market is forecast to grow 2 to 3 per cent a year (Prognosesenteret), which is steady rather than spectacular. When house prices fall, owners postpone the kitchen and the extension; the roof and the bathroom get done anyway, because they leak.

And the paperwork is real. U-values on the invoice for Enova, a permit for asbestos, a return receipt for the windows, a wet-room certificate for the bathroom, a safety card (HMS-kort) for every worker on site. Crews that treat this as part of the job get the repeat customers. Crews that don't, don't.

The work I place is mostly with small and mid-sized firms that do exactly this: strip and re-clad, re-roof, rebuild bathrooms, put in windows, add a room. They want carpenters who can read a drawing, work from a scaffold in the rain, and do a whole wall from stud to paint. They pay the rates above, they sort accommodation, and they keep people who are good.

And you live in Norway while you do it. The houses from the 1970s stand in the same places people go on holiday: along the fjords, up the valleys, in the suburbs of Bergen, Stavanger and Trondheim. The working day ends early enough to use the evening. In summer the evenings stay light; in winter the ski tracks start at the end of the street. It is a good life for someone who likes to build things and be outdoors.

If that is you, and you hold an EU or EEA passport, send one application. I read every one myself and reply personally.

Carpenter jobs in Norway: the trade, the rates, the open roles