Why Trim?

In many strawbale projects it is common to plaster around the windows and doors right up to the frames and jambs, eliminating the need for any type of trim. This simplifies the construction process in terms of eliminating framing considerations to support the trim, and in economy of materials, as the trim itself is rendered unnecessary. However, this method does create a potential headache. Should the window frame ever need to be replaced, the plaster around it will have to be broken out, and, assuming the nailing fin was used to install the window, the lath and wire mesh (and associated pneumatic staples) covering the fin will also have to be removed.

Furring Out for Trim Support

To avoid this potential problem, the window and door openings were framed out with scrap 2x4 material, creating a surface to which the trim will be applied, as well as a plaster stop (this can be seen by clicking on the photo). Roofing felt and lath were added to the sides of the 2x4s to isolate moisture and support the plaster edges. Upon completion of plastering (all three coats), the plaster should be at approximately the same level or slightly below the level of the 2x4s, allowing easy application of trim.