Tap my experience.. Insulate, reflective layer and stop that pesky ventilation from sucking the heat out. Wear protective gear when working!! <img src="<>/smile.gif" alt="smile" title="smile" height="15" width="15" />
Jeff,
Outgassing is caused by the temp of the timber increasing after the resin is applied. The air inside expands and the extra volume of the expanded air tries to escape.
You can get outgassing just by the day getting warmer if this translates to the temp inside the workshop and hence your timber also increasing in temp.
When I want really good penetration of resin into timber I will deliberately heat the timber and apply the resin and then remove the heat source. Then the opposite to outgassing occurrs. The air in the timber contracts and draws the resin in.
If I was going to do a big laminate job over timber I would wait until the hottest part of the day where I knew the temp would not increase further but fall and then do it. Just a small precaution I would be working on timber whose temp is falling or going to fall. Probably something more applicable to building a cedar strip craft in an outside shelter where the temp can change quite a bit during the course of the day.
I am quite fortunate these days because the temp in my workshop varies very little no matter what happens outside.
Thanks Phill thats a great tip, at this time of year I could leave the hulls outside from 9am in the sun, take it inside really warm at 12pm, finish the glass work at 3pm and let it all cool down.
That also makes sense in winter for me to heat the piece being worked on from the inside then glass it.
I'd love to find sheets of poly shaped the same as corrugated iron, that I could put on the roof of the shed in winter. That would absorb the winter sun, heat up the shed during the day and slow down heat release at night.
regards