Modern Methods of Construction ( MMC )
As technology, manufacturing processes and construction knowledge
increase so do the number of house construction methods available to
house builders.
The term 'Modern Methods of Construction' refers to a collection of
relatively new construction techniques that aim to offer advantages over
traditional methods. Although referred to as Modern Methods of Construction, some of these have been used for some time.
Conventionally this is an area where self builders pioneer,
particularly in terms of sustainable construction. Where developers were
happy to stick with proven methods of construction that suited buyer
demand, many self builders were and still are, willing to research,
invest and try something a little different in order to achieve an
individual home that meets their needs. You only have to watch a couple
of episodes of 'Grand Designs' before you come across an unusual build
method.
In light of increasing housing demand, skills shortages and the
targets set by
The Code for Sustainable Homes, the Government is encouraging the
house-building sector to use and develop MMC in an attempt to meet these
challenges.
Most of these modern house construction methods have evolved to some
degree from their traditional predecessors. Methods such as thin joint
systems with Aircrete blocks and structural insulated panels (SIPS) are part of the ongoing evolution of masonry and timber frame construction.
Other
techniques more familiar in larger scale commercial construction have
developed, bringing alternatives with some interesting qualities to
house building. Steel frame systems have developed and in-situ concrete techniques have led to the development of insulated concrete forms (ICF).
Another unlikely material to make its way into the modern methods of construction is straw. A company called Modcell
have developed a timber, straw and hemp panel system that can be
produced in 'flying factories' then delivered and erected on-site.
Facit Homes
have taken things a step further and deliver a 'mobile production
facility' to the plot where the components of the superstructure are
manufactured on-site!
A common denominator of the modern methods is a reduction in
construction time on site and an increase in the amount of manufacture
that takes place in a controlled factory environment.
This brings prefabrication to mind but contrary to the images that 'prefab' conjures up, many of the kit houses that are available break new ground in terms of design and construction.
These modern methods and the increase in offsite construction offer the following perceived advantages:
- Reducing the effect that weather has on production.
- Reduced impact on residents.
- Fewer materials deliveries and so reduced disruption and fuel consumption.
- Controlled manufacture.
- Reduced construction times.
- Fewer defects.
- Higher quality.
- Reduced energy use.
- Reduced wastage.
- Meeting demand during skills shortages.
- Reduced labour requirements.
- Improved safety.
- More accurate cost forecasts.
- Use of better materials.
- Improved manufacture times.
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