What the Tranquility build involves
The barrel goes together on site following Dundalk's illustrated manual: the machined cedar staves are fitted around the front and back walls and drawn tight with the bands.
One contingency is worth knowing before the truck arrives. If the staves are too loose to settle into a tight “V” at the top, the manual has you add the square spacer from the package to the top stave. In the rarer case that they are too tight, it has you trim 3/4" (19 mm) off each half of the top stave with a circular or table saw.
Tools the manual asks for: cordless driver or drill with a #3 Robertson bit (a short one and one 4" or longer), rubber mallet, level, and a 1-1/2"–2" (38–51 mm) hole saw.
After the first month: Dundalk's care guide has you check the bands once the sauna is installed and tighten any that have loosened with a 3/4" wrench — secure, but not so tight that the cedar staves cannot expand.
Watch the build
Foundation
Dundalk asks for a base that is level with a slight slope to the back for drainage — a concrete pad or a wood deck.
Electrical
Final electrical hookups must be completed by a certified electrician to comply with local codes. Dundalk makes this a condition of warranty validation, not just good practice.