United Kingdom Accreditation Service, certifying your timber frame project is manufactured and erected to reliable and quality ISO 9001:2000 procedures SGS - Society General de Surveillance ensures that quality systems and procedures are used in the design, manufacture and erection of your engineered timberframe structure is of the highest standard FSC - Forest Stewardship Council - FSC Timber Frame certification. Benfield ATT hold Chain of Custody certification for the Design, Sales, Manufacture & Distribution of Engineered Timber Structures – FSC endorsed by Greenpeace, Friends of the Earth and WWF and EcoHomes Investors in People, Benfield ATT are one of a few timber frame companies to hold an award for the training and ongoing development of their people and service   Examples of timber frame homes

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Metal Web Joists

To overcome on-site skill shortages and service run issues, many builders are turning to metal-web truss-joists to avoid the risk of holes and notches being cut in timber joists or 'I' beams. Such actions can severely weaken floors and may even cause them to be condemned before building works are completed.


Manufactured in a similar way to roof trusses, top and bottom cords of stress graded timber are connected by metal web plates to form extremely strong girders that can span wide openings.


Metal web joist system


Metal webbed floor joists are formed from a timber top and bottom rail, with metal pressed ā€˜V’ webs between. The large open web design provides easy access for all electrical and mechanical services. Metal Web Joists eliminate problems with floor members twisting or bowing, leading to the inevitable squeaky floor. The beams are environmentally friendly, utilising much less timber from much smaller trees, and there is no site wastage.


Site installation times are greatly reduced, as the floors are made to measure. The strong back replaces the traditional herringbone strutting. The beams are much lighter than solid timber, and span further. This has implications in floor designs, possibly removing the need for internal load-bearing walls.


Metal Web Floor Joists by Benfield ATT

Metal Web Floor Joists by Benfield ATT


Metal Web Joists are designed to be compatible with timber joist sections, to ensure they are easily integrated into standard construction (typically 219mm deep). They also form an integral part of the timber framed buildings we supply, enabling us to provide a totally engineered solution.


Not only do these carefully engineered components increase architectural design freedom for internal room layouts, they also provide plenty of clear space between ceilings and floors for service runs, e.g. plumbing, electricity, telephone, heating ducts, etc.


Whatever your requirement, we will be pleased to provided initial advice and consultation without charge or obligation.



Short lead times and fast turn-round available.

Call us on 01291 437 050, or click here to e-mail us your requirements, now.



Chartered Building Consultancy - timber frame, OSM (off-site manufacture) and engineered timber structure advisors. Timber Research and Development Association – our work with TRADA ensures high quality, eco-friendly engineered Timber Frame build projects. The Green Register of Construction Professionals - Benfield ATT's membership demonstrates our passion for environmentally sustainable timber frame self-builds, new homes, schools and social housing for local housing authorities AECB - Association of Environment Conscious Building – our FSC certified timber frame is endorsed by The Ecology Building Society Impact Upon Society Big Tick Award from Business in the Community – BITC – award-winning timber frame company within the Timber-frame industry TRA - Trussed Rafter Association – our membership assures Timberframe Trusses, Trussed Rafters, roofs and complex and innovative roofscapes are quality HBF - the only developer partnering timber frame company to be members of the House Builders Federation. Wales Quality Centre – members and committee members, we ensure the highest quality, especially when coupled with ISO 9001, FSC certification and Q-Mark Plus standards RICS - Royal Institute of Chartered Surveyors, assures our customers of our professionalism in wood and timber frame building and developing and surveying
Benfield ATT FSC-Certified Engineered Timber Structures do not cost the Earth.
Chain of Custody TT-COC-1928. FSC Trademark (C) 1996 Forestry Stewardship Council