How Icelandic Turf Houses Were Built: Stone, Timber, and Earth

Icelandic turf houses were ingeniously constructed using a sequence of flat-stone foundations, internal timber frames, and layered turf walls and roofs. This design addressed Iceland's harsh climate and scarcity of wood, creating durable, insulated dwellings that evolved over centuries and became a symbol of national identity.

Chloe Dubois

October 30, 2026 · 5 min read

An Icelandic turf house was assembled from four elements in sequence: a flat-stone foundation, an internal timber frame, walls of stacked turf blocks, and a turf roof laid over the wood. Each layer answered a specific problem posed by Iceland's climate and scarcity of timber, and together they produced a dwelling that could be rebuilt when conditions demanded. Understanding that sequence, and how the design changed over a millennium, also explains why these houses moved from ordinary shelter to national symbol.

Deconstructing the Icelandic Turf House

Before tracing the history, it helps to see the building as a system. Each component solved a distinct constraint: damp ground, scarce wood, brutal cold, and wind. The table below isolates the four structural parts and the adaptive function each performed.

The four core structural components of a traditional Icelandic turf house
Component	Material and technique	Function and adaptation
Foundation	Flat stones laid carefully to form a stable base	Kept the structure durable and separated the earthen walls from damp ground
Timber frame	Internal wooden skeleton giving the house its basic shape	Carried the structural load; wood was scarce, so the frame was used sparingly
Turf walls	Blocks of turf—grass and soil, cut up to a metre thick—packed over the stone base, sometimes in a herringbone pattern	Provided thick insulation and could be cut and stacked with local material
Turf roof	Turf laid in thick blocks over the wooden frame, grass-side up	Insulated the interior and blended the house into the landscape

The logic of the assembly follows from the materials. Stone was available on site; turf was effectively inexhaustible; wood was not. So the builders inverted the proportions of a timber house: earth does the enclosing, and wood does only the shaping and supporting.

Foundations of Survival: The Stone Base

Construction began not with walls but with reading the land. Builders chose sites that offered some shelter from harsh winds, using the natural landscape to their advantage, according to a historical account of how Viking settlers built these homes. The foundation itself was typically made of flat stones, laid carefully to create a stable and durable base.

The stone layer mattered more than its modest appearance suggests. Turf walls absorb moisture from the ground, and a house built directly on soil would wick dampness into its living spaces. By setting the earthen structure on rock, builders gave the walls a dry starting point and the whole dwelling a footing that would not shift under Iceland's freeze-thaw cycles. It was the quiet, load-bearing first act of the entire process.

Layered Protection: Turf Walls and Roofing

With the frame standing, builders turned to the material that defines the tradition. Blocks were cut out of turf—the grass together with its soil, in layers up to a metre thick—and arranged over the base layer of rock, then packed in to form the structure's walls and roofs. The cutting and stacking demanded skill: photographs of surviving walls, such as those at Grund above Akureyri around 1900, document the herringbone walling technique, in which blocks were laid in interlocking diagonal courses for stability.

The roof completed the enclosure. Thick blocks of turf were added over the wooden frame, grass-side up, giving the structures an appearance that blended into the rolling green hillsides. The result, as one account puts it, was a sustainable home that quite literally grew out of the earth. Today the surviving houses still stick out of the landscape like tussocky tents, their green crowns the visible signature of the method.

Maintenance was continuous and communal. The historical account of the settlers' methods notes that upkeep was a communal effort, reflecting the collaborative spirit of Icelandic communities—a social structure built into the architecture itself.