A palisade church is a church building which is built with palisade walls, standing split logs of timber, rammed into the ground, set in gravel or resting on a sill. The palisade walls form an integral part of the load-bearing system.
This type of construction is often believed to predate a construction method with posts set directly into the earth, sometimes called a post church, and the later stave construction method, or stave church. A palisade church often had its walls set fully or partly in gravel and therefore they can be detected in archaeological surveys. Sometimes a new church was built around an existing one, and remnants of the old church can be found under the floor.
The construction itself consisted, in its simplest form, of posts set closely together into a trench in the earth, with the roof resting directly on top of the logs. Later the logs were split in two halves, with the flat side facing into the enclosed room. The edges could be straight, or tongued and grooved.
To prevent rapid deterioration, the logs or stave-planks were charred at the lower end and impregnated with pine-tar. The rows of stave-planks also rested in a ditch of gravel. Nevertheless they were still susceptible to damp and eventually deteriorated.
For a long time it was assumed that this style of church building had disappeared before the year 1000, yet later research has shown it to be quite common as late as the 13th century. No such church exists in Norway, nor is there found any remnants of any such church, even though most of the stave churches in existence today are located in Norway.
Although this type of church has now almost completely disappeared there are two exceptional survivals.
One church of this kind was rediscovered in Gotland, Sweden, re-used as floor planks in the later medieval church. This makes it possible today to say, with some qualified certainty, how such a church would have appeared. The reconstructed church is commonly referred to as Hemse stave church, although it is a palisade church of type. The church is now dismantled and in storage.
In England is another church which has survived into our time. Greensted Church still has its massive palisade walls. Although much debated, it is often classified as the remnants of a palisade church or, more loosely, as a stave church. For a long time this church was assumed to be the world's oldest wooden church, as a dendrochronological dating estimated its construction to 845 CE. A later analysis has reset the date of the timbers to 1053 CE (+10/55 years) .
See also 
- Christie, Håkon, 'Middelalderen bygger i tre' ('The Middle Ages build in wood'), Oslo 1974 ISBN 82-00-01395-2