Offsite construction has moved from niche curiosity in the 1990’s to mainstream necessity today as the industry is being reshaped by the demand for faster build times, higher energy performance, and precision‑engineered components. This shift places Modern Methods of Construction (MMC) at the centre of the transformation – driving manufacturers, developers and material suppliers to rethink how homes are designed, manufactured and assembled. Against this backdrop, products that deliver accuracy, consistency and reliability – like those from West Fraser – are becoming essential to meeting the new expectations of an industry that’s rapidly evolving.
What is MMC?
Let’s start by explaining that the phrase ‘Modern Methods of Construction’, known as MMC, was coined in the 1990’s though the building process started way earlier when products such as timber roof trusses and precast concrete panels were constructed offsite. Today’s MMC world is flourishing through the increased number of timber frame systems, many of them from Europe or Scandinavia, being used for housebuilding. Greater emphasis on improving energy performance, as well as reducing waste in the building industry, has pushed developers towards using MMC or ‘Offsite’ building techniques.
What categories of MMC do West Fraser products suit best?
While there are still some companies supplying basic ‘Open’ timber frame systems, ever more are moving to offering ‘Closed Cell’ alternatives which feature a sheathing board and factory-fitted insulation in the cavity which saves time on site for the builder. Also popular now are more advanced components including flooring cassettes and roof cassettes, or complete room-in-the-roof modules, which can be craned onto both new-build and existing wall structures. These could use high performance panel products for the floors, fixed to rafters as sarking boards, or to clad the cheeks of dormer windows. In addition, Structural Insulated Panel systems (SIPS), with their own association, are ideal due to their high standards of airtightness as well as thermal insulation. SIPs normally feature a substantial thickness of expanded foam insulation between two layers of a timber-based board product.
Why do offsite manufacturers specify West Fraser board products?
There is a couple of basic commercial considerations as to why manufacturers choose to buy panel products from West Fraser, price and availability; yet, it also comes down to a combination of technical factors.
Quality and dimensional accuracy crop up most often in comments from leading manufacturers, both because they have built their businesses on ensuring clients have no concerns about the speed of installation and alignment on sites, and also because they are using highly automated production lines where irregular sizes or structural weakness can cause costly problems. West Fraser boards are produced under similarly stringent processes in a modern plant; complying to very high tolerances and can be relied on to cut cleanly when computer-controlled saws, routers or even laser cutters are being operated. And, once in use, the different boards will offer the required racking strength (sheathing boards), spanning capacity (flooring), impact strength or all-round durability.
Which West Fraser boards can be seen in MMC systems?
Several of the company’s tried-and-tested panel products have become firm favourites with manufacturers across the offsite industry, utilised for a wide variety of MMC systems including closed panel production, SIPs and modular solutions. They include SterlingOSB Zero which is bought by a number of SIPs companies who commend it for the dimensional accuracy as it would stick out like the proverbial sore thumb if the opposite faces of the insulated sandwich panel didn’t match up. CaberFloor P5 and CaberDek also feature fully amongst companies specialising in floor cassettes and larger modules, used as a surface which can be left exposed or covered with carpet and other flooring finishes.
For further information, call 01786 812 921 or visit uk.westfraser.com