05:13PM | 12/25/06
Member Since: 12/04/06
2 lifetime posts
Building a log cabin. Have installed a steel roof on 1x4 stapping which is on top of the 2x10 rafters.

How would one finish the under side - insulation etc. The ceiling will be 1x6 T&G pine directly on the underside of the rafters.

Should I spray foam directly to the roofing- what thickness?

Or should I create a channel from eave to ridge for ventilation and then install fiberglas insulation?

Where should a vapour barrier be installed?

This cabin will be mainly used in summer and fall with a few winter weekends.

Any help would be appreciated.

Thanks Jerry


05:56AM | 02/04/07
Member Since: 11/06/02
1280 lifetime posts
foam is best, but expensive.

The key is keeping moisture from contacting a condensing cooler surface. Either super insulation to isolate cool surfaces, venting moisture out, or using perfect vapour barriers to keep interior moist air from escapintg to contact the metal - or a combination of all three.

Excellence is its own reward!

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