The rafters and purlins in traditional cut and pitched roofs. POST ROOFS – are internal support struts in the loft, it props up Rafters are covered in boarding just before the roofing felt and tiles/slates The shape of this roof is like shaped like triangles next to each other or teeth. They can be built with wooden or metal joints. ![]() They come in a variety of styles and a pre-designed to fit each type of building. They are placed at regular intervals along the supporting walls of the building and are used to replace the purlin and rafter construction. They use pre-fabricated triangular frames made with small section timbers fixed together with metal plates. ROOF TRUSS/ TRUSSED RAFTERS – an assembly of frames structural members consisting of ceiling joists, rafters, struts and ties. Structural support within the roof and supports the main beam. Joint that slots together often in a triangular shape. Is the beam located horizontally at the very top of the roof structure. RIDGE BOARD– is located at the very top of the roof and is the main support of the ridge. Vertical beam often found connected to the strut to help support the purlins. ![]() Low rafter ties – located bottom third of the rafters run.Mid-span rafter ties: horizontally based in the middle of rafter.Collar ties: horizontal ties in the upper third of the loft void or roof.Horizontal beam to reduce stress and used in roof trusses. Positioned at an angle used to support the purlins. SARKING – a felting sheet which can be laid on top of the rafters to provide a weatherproof barrier under the tiles/slates (see loft void insulation). Parallel timber or steel member, which slopes to form the roof of the building. They support the roof structure of the building and loft PEGGED ‘A’-FRAMED TIMBERS – Timbers that are pegged or slotted in together and in a Horizontal timber or steel beam which creates support for the roof rafters. They are traditionally truss timbers that have been bolted together or mortise and tenoned and then pegged. MORTIS AND TENON JOINTS – joints that slot together and make up the structure of the loft space. Joist at the bases of the beams to strengthen them. ![]() Timber, can be made of steel or concrete, which carry loads over a span between In every bat preliminary roost inspection, we have to record the architectural design and materials which are used in making the loft void to gain an insight for its suitability for bats and to support our overall justification for why it is suitable or unsuitable for roosting bats to utilise.įor other architectural terms read our Guide to Architecture blog post! List of Components within the Loft voidīATTEN –a small timber section which is fixed across the rafters to support tiles or/and slates. However, it is not just the bats that we are looking for. How Your Business Can Improve BiodiversityĪs licensed ecologists we spend a lot of our time crawling around in loft voids looking for evidence of bats or the bats themselves!.When can I carry out ecological surveys?.Great Crested Newts – How We Can Help You.We offer Expert and Bespoke Bat Training Courses.BREEAM / Code for Sustainable Homes Ecology Assessments.
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