Wrap cut off a basement trunk line so new return ducts can reach the bedrooms
Example project
- Home
- 1950s one-story rambler in West St. Paul with one central return and original ductwork in the basement
- Original request
- Add a return duct from each bedroom so the back of the house stops running warm and stuffy
- Testing
- Samples of the paper wrap on the trunk, the tape at the return plenum and the boot wrap, taken by an MDH-certified inspector
- Found
- Trunk line wrap and plenum tape both positive
- Clear
- No asbestos in the newer register boots
- Area
- Trunk wrap totaling roughly 36 sq ft
- Timeline
- Five-day notice, then one working day
- Cost
- $2,100
In this example, a 1950s rambler in West St. Paul has one return grille in the hall. The bedrooms at the back never feel right, and the heating contractor plans a return duct from each one, tied into the basement trunk and the return plenum.

