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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'I' Beams

TJI's, JJI's, 'I' beam joists, I-beams - or whatever you wish to call them - today's advanced technology in timber engineering, glues, laminated timbers, and connector engineering allows us to create superb joist frame systems for carrying increased loads over wider spans than can often be achieved using ordinary carcassing timbers.


Please remember that different load factors need to be applied according to the use to which a floor may be put. For example, a bedroom in a dwelling-house will have different loads if it is used as a bedroom, an office, or a play/sports room, e.g. if it has to carry a billiard table.


I beam floor joists; I-beams


Having our own privately-owned manufacturing facility makes us incredibly flexible. As such, we are able to offer I-beams with a Kerto flange and high quality OSB web, with a high strength to weight ratio. Therefore producing lighter, longer spans combined with quick and easy installation, so reducing your build time and increasing efficiency.


We can also supply and fit 'I' beams which have 3rd party accreditation through BM Trada Q-Mark and European Type Approval (ETA) and the CE Mark (these must be specified when ordering).


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 437050, 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