Roof Replacement and
Roof Repair Specialist(703) 475-2446
October 10, 2011 by - 0 Comments
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Roof trusses are the rigid and stable triangular supports that hold up your roof and distribute the weight of that roof away from the walls of your home. Most roof trusses are prefabricated to save time and money but if a non-standard or special design is needed, they are usually constructed on site. They come in six versions and each has their benefits and suitability dependent on the style of architecture.
The most common roof truss is the energy-efficient Raised Heel Roof Truss and it provides outstanding structural support while allowing for the most attic insulation to be installed. For areas prone to gale force winds or hurricanes, a Dropped Chord Roof Truss is preferred since it is reinforced with primary and secondary trusses. It needs a load bearing wall and a beam for support. It doesn’t leave much space left over for insulation.
The least expensive Parallel Chord Roof truss has chords across the top and bottom and doesn’t need all the support that the Dropped Chord Roof Truss needs. Neither does the Scissor Roof Truss, which is preferred for heavy snow regions since it is designed to carry extra weight. It is also the type of truss most seen in cathedral ceilings and its exposure to view is visually attractive but the drawback is that any roof repair is immediately noticed while in process.
The last two trusses are the King Post Roof truss and the Queen Post Ruff Truss, which aren’t in as common usage as the first four. They are true triangles and the King Post is less expensive that the Queen Post to construct as roof trusses.
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