Skybox House / Primus architects


Architect: Primus architects, atelier + production
Location: Zealand,
Project team: David Bülow-Jacobsen (architect maa, partner), Per Appel (architect maa, partner), Caspar Wissing (student of architecture)
Client: Jakob Lundsteen og Susanne Mahler
All construction: , atelier + production
Site Area: 1,200 sqm
Constructed Area: 75 sqm
Project year: 2009
Photographs: Tina Krogager

client exterior03 exterior06 interior04

The project is situated by the coast of the north of Zealand, Denmark.

With 2 bedrooms it offers a total of 75 m2 of living space. The plot is a partitioning of a larger plot belonging to an old thatched house and is partly enclosed by trees. The two buildings, inhabited by two generations, share the garden, and in the layout of the site plan attention has been given to providing both separate and common spaces.


The main focus has been to add spatiality and experience of light to the relatively small program. The plan sets the bedrooms apart from the large living space and introduces an open hallway. Diagonal views stretch out through the whole building. In working with the section ceiling height is minimized and “sky-boxes” are added to provide space and air.

The large glazed openings incorporate the sky as a 5th façade. Large sliding doors lets the in- and outside melt together.


The balloon frame construction sits on the exposed concrete base. 30 x 30 mm oak lists wrap the building. The lists are treated with iron sulfate which darkens and enhances the structure of the wood . Floor boards are oak as well. Insulation is mineral wool, roof 300 mm, walls 150 mm.

Heating is provided by a heat pump integrated in the wall, reducing heating costs and CO2 emission. The “sky-boxes” ventilate the space trough natural chimney effect. A cast iron stove is for additional heating.

Cite: "Skybox House / Primus architects" 15 Jul 2009. ArchDaily. Accessed 19 Sep 2014. <>


    • Thumb up Thumb down 0

      just a remark: photos don´t do complete justice to the experience of the light which lies in subtleties and shades. anyway, come visit to see for yourself! all the best, D

  1. Thumb up Thumb down 0

    I love the exterior cladding, punched windows and beautiful scupper / water collection detail. The interiors seem to me, a bit dissappointing. Even though the wood floors are a nice choice, the other decisions don’t seem quite as successful [ie: placement of wall heating unit, dark colored window frame, fireplace]. Would’ve been nice if outside was all dark / weathered, while interior was all light / airy / skyboxy, but it’s still a nice building.

  2. Thumb up Thumb down 0

    For such an insular facade, they were quite successful in make the occupants appreciate the lighting effects (and not just because the light was a scarse commodity).

  3. Thumb up Thumb down 0

    love it!
    Could you tell me where the sliding doors are from? Searching for simular for my cottage.

    Best Kate

  4. Thumb up Thumb down 0

    Does anyone know the brand of the openable windows?I’m looking for this type of outside openable windows for a project. If anyone knows, please post it here.
    Thank you

Share your thoughts