SIPs Frame Design.

SIPs(Structural Insulated Panels) Frame buildings comprise of external wall and roof structural panels which have a structural board, such as OSB, on the outer faces with an inner core of polystyrene or polyurethane insulation.

We design (SIPs) Frame Structures using current British and European standards and the design principles set out by the manufacturers independent 3rd party Certification scheme

We advise on all aspects of SIPs frame construction at pre-design, design, fabrication and on-site erection stages.

Our Services - SIPs Frame Design

Tim Kelly Consulting Engineers Ltd. offer the following specialist SIPs frame design services:

• Structural Appraisals and Design Calculations for a range of SIPs frame structures. This includes SIPs roof Panel Design calculations to TR019 which allows design flexibility for various board and core materials .


• Undertake structural checks on manufacturers fabrication drawings, if required.


• Structural design Certificates for SIPs Designs.


• Load Take Downs of SIPs frame Structures down to base.


• Site inspections, where requested, to ensure compliance of SIPs Frame structure with Building Regulations.


• Expert witness in the field of SIPs frame construction.


• SIPs Lintel designs to minimise cold bridge

As we specialise in this form of construction, we have extensive experience of medium rise timber frame structures of Class 2A and Class 2B (disproportionate collapse classes) and hence can optimise value-engineered design solutions which are fully compliant with the requirements of the Building Regulations and associated standards.

Where clients want a particularly low energy dwelling, i.e. passive house or approaching, we will work with our client to design the structure to minimise cold bridging.

Bespoke Timber Structures.

• Structural Design of feature trusses, straight and curved beams, complex frame structures (as per photograph which is of Mount Sion Heritage Centre).


• Efficient connection design using various connection solutions including bolted hidden plate and resined-in threaded rods.