For those struggling with their mental health these black and white judgements get people stuck into deep furrows of thinking and emotions.

PMV is calculated as the percentage of cost that is derived before any site works and strongly encourages maximising the proportion of off-site works.. As a result, many parts of the construction industry are focusing more and more on off-site prefabrication in pursuit of benefits including lower cost, reduced delivery timescales, higher quality, improved health and safety, less waste and more productive site labour..But is off-site always the best way to achieve these benefits?

Construction sites have been around since the dawn of civilisation.Do we really want to walk away from all that learning, and start moving as much of the construction process as possible into distant sheds?.Is on-site construction really all that bad?.

Construction sites could be defined as locations where finished assets are built.They can be messy, congested, dirty and chaotic places.

But they don’t have to be.

If the construction process can be transformed into the streamlined and predictable assembly of pre-manufactured parts, combined with on-site construction processes that are carefully managed to add the maximum value, much greater productivity can result.. To give a slightly left-field example, consider a circus tent.Increased programme: Delivering a Passivhaus building can take longer.

Quality control on site is extremely important, strategies for airtightness require careful sequencing and interim testing and workmanship skills need to be of the highest quality..Skill shortage and understanding.

There is a lack of large-scale builders who can deliver Passivhaus buildings.These projects can be seen as bespoke and are more expensive.. Bryden Wood’ response to Passivhaus’ challenges.