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Page 12 · Furniture

2,000 books under the eaves

An attic, a wall sloping at 38 degrees and a collection that lived in moving boxes. Now every book has its place – right into the last corner.

Section
Furniture
Place
Idar-Oberstein
Year
2025
Build time
7 weeks
Wood
Beech, Birch & plywood

Starting point

The brief

After retiring, Dr. Kessler wanted a library. The only free room was the converted attic – with a knee wall of 1.10 m and a slope that defeats every standard bookcase.

He wanted a bookcase that follows the slope exactly, closed cupboards at the bottom for files and photo albums, and a reading bench under the roof window.

The budget was fixed, so we combined solid beech with birch plywood: solid where hands touch, plywood where it has to carry weight.

A shelf won’t sag under books if you did the maths first.

— Katrin Thielen

Wood and finish

Materials

Also used

  • Water-based matt lacquer
  • No visible shelf pins – shelves housed in grooves
  • LED strip in the bench

Sizes & facts

Width
7.20 m
Roof pitch
38°
Shelf length
about 42 m
Load per shelf
up to 60 kg

How we went about it

Process

  1. Surveying in 3D

    A roof slope is never a flat plane. We measured twelve points and recorded the twist.

  2. Calculating, not guessing

    Shelf spans limited to 80 cm so they don’t visibly sag under 60 kg.

  3. Built in parts

    The stairwell was 78 cm wide. So: separate modules, bolted together upstairs.

  4. Following the slope

    The top edge follows the slope with a 4 cm gap – enough room for the roof timbers to move.

  5. The reading bench

    Under the roof window: a bench with two big drawers and an oxblood-red cushion.

7 weeks

Timeline

  1. Survey & design2 wk
  2. Workshop4 wk
  3. Fitting1 wk

4 drawings

Picture story

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Thielen · No. 56 · Autumn 2026Page 12

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