Roof Truss Separation

Roof trusses for over 30 years 84 lumber has been a leading manufacturer of metal plate connected roof trusses for some of the country s largest single family and commercial builders.

Roof truss separation. We utilize state of the art technology the latest design software computerized saws and specialized jigging equipment all of which are designed to. The wider the span of the truss the more often the problem seems to present itself. Figure 2 roof truss in normal position. One goal of truss design is to build a roof structure that is as strong as necessary but that uses the minimum amount of lumber.

It sounds as if you are experiencing a partition separation problem. In the attic screw lengths of two by fours alongside the top of. The possible causes include building settlement inconsistent framing moisture effects deflection and truss movement. Arched roof trusses moving in response to moisture temperature variations across the truss can lift the building ceiling sufficiently to cause nail pops or actual tears at the ceiling wall juncture.

Roof truss uplift can be diagnosed as the cause of nail pops and cracks or separation between the ceiling and wall top. The roof truss spacing standard is important because eighty percent of new homes are built with standard pre fabricated trusses. Make sure to space each truss the same width apart. This article and series of illustrated diagrams shows you all the parts of a basic roof truss king truss and queen truss.

There are many types of roof trusses as wall as many types of roofs more types than there are parts. This means that if you re in charge of repairing or installing roofing trusses you ll be expected to hold to these standards. The roof truss structure and design is integral to roof structural integrity and shape. To make it easier you should carefully lift the truss upside down so that it can be turned right into place once they are above the roof.

This truss requires a soffit siding and additional insulation work from the onset which elevates construction costs. This separation breaks the taped joints between ceiling and wall drywall as shown in figure 3. To prevent them you need to decouple the ceiling drywall in the area where the cracks appear from the roof trusses near the walls. This can be caused by several factors working either independently or in combination with one another.

The raised heel roof truss reduces condensation problems since the truss creates a vapor barrier and is commonly seen in humid climates where mold is a common issue. Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span.