Promoting the Art & Science of Straw Bale Building
Straw bale ceiling insulation
I am looking to build an s/b house with portal frames, and so s/b ceiling insulation. There is very little info on ceiling construction details. I am happy to collate all info received and write a comprehensive report on s/b ceilings, as well as recording what we do. All emails, to the web or private will be responded to. Many thanks. Warwick Rowell.
(refer to Warwick's profile to email him - Admin.)...
We are also looking to use portal frames, and had looked at using fridge panel covered with coverbond steel, or a product like Corrolink from APS Versaclad- Website : www.apsversiclad..... We do not plan to have a hanging ceiling so were looking for a roofing material with insulation built in that would be attractive from the inside once in place. Not sure this helps you, but I will watch for your report as it will be of interest to us. Regards - Andrew and Mary
I built a steel portal frame straw bale house with a loft and lined the ceiling with b-grade plywood and polyester insulation. What we did was to screw scrap 60mm top hat at right angles to the underside of the existing roof battens (also 60mm top hat). This gave approximately a 120mm space that we packed with polyester using bailer twine strung across to hold it in place before we screwed up the ply to the upsidedown battens. Before that, we packed with insulation and covered with ply the 250mm c-section that made up the portal rafters. The lot was finished off with coverstrips and varnished by roller with a water based clear finish (satin) that I also tinted with blue food colouring and used on the ply attic floor. Result- a somewhat timeconsuminmg but OK looking ceiling that is not too dark a looks good. It's been up for 6 yrs now and works well.