The feasibility of the hypothesis of the open Courtyard, surrounded by individually roofed rooms, does not stand up to close inspection. There are matters of drainage. How was the rain water prevented from pouring into the infilled cavity walls? As indicated in this paper, the drainage systems of the courtyard house were a prominent feature of this type of dwelling. Therefore, it is questionable that rain water pouring into these large cavity walls would have been tolerated by its occupants. However, as portrayed earlier this could have been overcome, by hard packing the Rab infill, and adding a thick layer of puddled clay on the top. With the addition of a primitive bark guttering system, this would possibly have coped with most of the rain water. There is furthermore, the difficulty of making the flat roofed areas waterproof. In a climate well known for its considerable annual rainfall, this would be a formidable undertaking. The survey, of the orientation of the outer courtyard house doors indicates an awareness of the importance of the prevailing westerly winds. The preponderance of south, south east and easterly outer courtyard doorways, seems to indicate this. The raised floor of Hut 6a, with its doorway facing directly into the prevailing westerly winds, and the ensuing problems this would incur to the inhabitants of this dwelling is an anomaly. This leads to the supposition that the entire structure was roofed, and that the courtyard was actually a central hall. There may possibly have been another floor structure on top of the room walls, supported by the large infilled areas, between the separate rooms. As indicated in (Fig 9). This suggests that the courtyard house was a substantial dwelling, capable of housing large, extended families. With its substantial central hall, ( possibly re-named galleried houses) the upper gallery floor would be an impressive sight on entering the central hall. This area would have been warm and dry benefiting from the rising hot air of the pit fires on the ground floor. 

The rooms below could have been stores or workshops which would be a considerable advantage during winter. This paper perhaps throws new light on these structures, that are such a predominant feature in the West Cornwall landscape.