3
•
Have a vapor barrier.
•
Have gaskets wherever the door meets the kiln; this
will give a good, airtight t.
•
Have a scraper type weather strip to reduce air
leakage if door sill is not present.
•
Close tightly against the gasket using turnbuckles,
tarp straps, lag studs with wing nut, etc.
Remember: There will be considerable expansion and
contraction during kiln use, plan door construction
accordingly.
While outside electronic moisture meters can be used
to avoid entering the kiln, during the drying cycle,
Nyle strongly recommends regular checks inside
the kiln to visually inspect the surface or end checks,
mold, stain and to check with a hand held meter.
Step 4: Cover Thermax with one or two layers of 6 mil
polyethylene, then enclose with ½” CDX or marine
grade plywood.
Step 5: Coat CDX interior surface with “mobile home
or metal roong aluminum paint”
Paint is an asphalt based coating with powdered
aluminum and ber for strength, available in
hardware stores. Re-coat as necessary every year.
Step 6: Finish exterior walls to suit your tastes, but
avoid galvanized steel or other ferrous sidings.
Once you have completed construction of the kiln
chamber install the following air deectors and
baes to control the airow within the chamber.
• Corner deector typically made of plywood used to
help turn the airow.
• Hinged bae that falls from the fan wall, to be held
up during load with a nylon rope. Hinged baes
compensate for dierent load sizes, and allow for
shrinkage of the board pile.
• Bae that closes in the open space for lumber that
does not ll the entire width. This bae can be xed
or portable.
Do not underestimate the eect of this baing, as
correct baing will pay o in more even drying and
faster drying. This more than osets the extra time
and eort to correctly place the baes.
Please reference pg 13 for more information on
deectors and baes.
Please reference Chamber Plans for more information
on construction.
Step 1: Build all walls, ceilings and oors with a 2” x
4” framework, with blue or pink Styrofoam (extruded
polystyrene) friction tted between the studs.
Step 2: Cover the interior face of the studs with a 1”
layer of Celotex Thermax (or for better results two
overlapped ½” layers).
Celotex Thermax is foil faced polyisocyanurate
(urethane) board which is orange or yellow in color
and is available in 4’ x 8’ sheets of various thicknesses.
Celotex Thermax is a trade name and similar and
acceptable products are available under other trade
names.
If you want to use spray foam insulation, urethane
based only applied at 2.2lb/cu ft. Fiberglass is never
recommended.
Step 3: Caulk joints and nail heads with high
temperature silicone (optional: apply aluminum tape
over silicone)
Construction Guidelines