Value assessment. • In terms of cost? • Other construction methods? • Productivity on site? However, it is inevitable that with the introduction of any new construction system the question arises “How does it compare?” Here we endeavour to provide some guidance on areas of the construction process where the Porotherm System provides the user with benefits that need to be considered when endeavouring to produce a realistic comparison - for both ‘Hard’ and ‘Soft’ costs and hence value. 2