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| How to
Build with Fiberglass |
- Use any good quality wood for your greenhouse framework. Be sure to
treat the pieces with a wood preservative before assembly, even cedar
or redwood. Copper or zinc based preservatives are safest.
- 2 x 4 lumber is adequate for framing, but use heavier lumber in snow
zones or where rafter length is more than 8 ft. (Check your local building
code.)
- Space rafters and studs 2 ft. apart and install blocking every 24"
to 36" in walls and between rafters.
- Flat fiberglass is rolled out horizontally on roof, but can be installed
either horizontally or vertically on walls. (Corrugated fiberglass should
always be installed vertically.)
- Caulk all fiberglass seams.
- Secure flat fiberglass with wood lath on rafters and studs (no horizontal
lath). Nail fiberglass to blocking with aluminum washer-head nails.
- Provide for ventilation with an exhaust fan system, or large vents
in walls.
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