Tarporley Self Build

Tarporley ‘Superchord’ Self-Build Case Study


Residential House Build


Tarporley, Cheshire


Tarporley Self Build

The Brief

We were approached by a client involved in the self-build of a residential development. On this particular project the client called directly into our offices in Minera, Wrexham with his plans to discuss the feasibility of using roof trusses on his project. We were only too happy to assist him. His architect had originally specified that the roof should be constructed using a number of steel beams running the full length of the building to support site-cut rafters. The client was concerned the weight and size of the steels would make them very difficult to handle on site. He wanted to discuss his concerns and see if we could provide an alternative option.


Upon examination of the plans we quickly established we could fulfil all of the client’s requirements. We proposed a solution in trusses which eliminated the need for any steel beams. Furthermore, we were able to provide full calculations for our client to pass onto LA Building Control to satisfy Building Regulations. We proceeded to put the concept designs together using our 3D roof engineering software, allowing the client to clearly visualise what the proposal consisted of from every angle. The build had a large feature window high in the gable end which was a crucial feature the client was keen to maintain.


To gain the maximum headroom possible in the roof we designed ‘Superchord’ raised-tie trusses. Trusses become ‘Superchords’ when an extra timber is fixed along the rafter to provide additional strength to the timbers. This enables the ceiling member to be raised higher, creating more height in the room below. The ‘Superchord’ rafters on the trusses enabled the feature window to be kept in the project, along with the high ceilings. In addition to this, their inclusion removed the need for any cumbersome steel beams and dramatically reduced the time spent constructing the roof on site.


We were able to provide the client with a trussed rafter solution that did not require any internal load-bearing walls or large heavy steel beams running the length of the building. Futhermore our solution allowed the feature window and high ceilings, key design features of the project, to still be prominent. The whole project was a great success as the concerns and issues that the client first raised were overcome with a solution that would allow the client to maintain features of the building he was initially concerned would have to be sacrificed. Our experience and expertise ensured that he did not have to compromise on his build from a design perspective. We are very proud of the finished result and look forward to working with our future customers on more projects of all shapes and sizes.


After consultation with Minera Roof Trusses, we used computer generated designs for the trusses which were to be set as radii from the centre block. The finished product was a great success and we were pleased to work hand in hand with Minera to achieve this.

Gwynn Parry - Pen Y Bryn Joinery

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