Exterior Soffits are subject to extremes of temperatures, blowing moisture, and other rough treatment that gives you pause to just use painted drywall. Exterior Insulated Finishing Systems [EIFS] offer several benefits through its ability to withstand most of those issues with only a modest increase in cost. Certainly less cost than the traditional material - cement plaster.
The canopy fascia might be formed of EIFS also. The use of EIFS is very straightforward if you have limited penetrations. The drip edge detail is recommended to avoid discoloration from water running back onto the soffit instead of dripping off the edge. Insulation value is not an issue since the thermal (and security) barrier should be at the wall line of the building.
- This detail is suggested to specify the configuration, construction and materials required for the exterior soffits and canopies on the project.
- These details are referenced on the floor plans and elevations.
- Special care is needed if vehicles pass under the canopy or could back into it. The only safe clear height is 15'-1" (the same as a highway overpass).
- You may want a specification covering the quality and installation aspects of these materials.
- These details should be placed on the Door Schedule sheet, the A-501 or AE-501 series of sheets per the National CAD Standards, contrary to the designation shown here.
- Download PDF of detail.
orig post date 4/23/2013