Fence House Roof Truss Company

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Builder Support

We understand that working with self-build and private projects can be time-consuming and often complicated, throwing up issues and changes to overcome as the project develops. Roof trusses can be complex and difficult to deliver without the necessary expertise, builder support and knowledge to ensure their accuracy and quality. Roof truss costs can quickly escalate in line with changing client requirements or with mistakes in an often-unknown territory for most builders.

We can work as your roof truss and timber frame builder support partner throughout your construction. With our team of designers and site surveyor, there is always expert advice and guidance available to make sure that you get it right for your client and keep roof truss costs to a minimum, with a quality product and service.

As experts in roof trussing, we are frequently asked questions about the design, manufacturing and installation process by building project teams. Here we have outlined some of the more frequent ones in case you find them useful. You can also see a full list of our Frequently Asked Technical Queries

What does timber treatment include?

Timber can be treated to further protect wood from the elements, such as fungal decay and insects (risk in South East England). The specific risk to your timber will be dictated by your geographic location and where the timber is being used in the construction. It is an additional cost to have your timber treated (around 10% of the cost of your structure) and the process includes covering your timber with a special preservative that is specifically designed to protect wooden structures from the elements.


What is the maximum weight for manually lifting a roof truss?

Current HSL guidelines give the following advice:

  • two-person teams – loads up to 48 kg;
  • three-person teams – loads up to 70 kg;
  • four-person teams – loads up to 95 kg.
  • Trusses that weigh over 95 kg should not be handled by manual means alone. Some form of mechanisation or mechanical assistance should also be used

Further recommendations specify that the area where the trusses are to be carried should be kept clear and noise levels should be reduced in order to ensure effective communication between the manual handling team.   For the full guidance visit HSE

How do you brace a typical roof system?

You must brace your roof trusses in order to create a stable structure. Incorrectly or non-existent bracing can compromise the trusses, resulting in distortion or structural failure. The Trusted Rafter Association has created this excellent guide to the correct methodology for bracing your roof system. http://www.tra.org.uk/media/file/PDS/pds4.pdf

How do you brace an attic truss system?

As with standard roof trusses, attic truss systems must also be braced to ensure structural integrity, both in the short and the long term. The Trusted Rafter Association has created a specific guide for the bracing of attic trussed roofing systems. http://www.tra.org.uk/media/file/PDS/pds5%202013.pdf

How do you insulate a sloping ceiling to achieve building regulations?

The levels of thermal insulation required for building are set by the Building Regulations and are expressed as a U-value. The required U-value will depend on a number of factors such as country (England/Wales/Scotland), whether the building is domestic or commercial, whether it is a new build or existing building and the actual application itself e.g. (floor, wall, roof). The recommended U-Value for new build, domestic pitched roofs, insulated at ceiling level, is 0.11 and the same build at insulated rafter level is 0.16. To guarantee sufficient insulation, it goes without saying that sourcing high quality insulation and a professional is important. Suppliers such as Kingspan, in fact, give excellent advice about their products and applications such as this Kingspan Guide to Insulation.  In our opinion, it is best to utilise the services of a trained expert, competent in calculating U-Values, such as your architect. Skimping on professional advice at this stage could lead to not meeting Building Regulations and having to start over

What are your delivery timescales?

We do offer a 5-day delivery service within mainland UK.