Browse Forums Heating, Cooling & Insulation Re: Ceiling insulation 4Jul 12, 2009 9:46 pm Thankyou for advice. The fill is a therma wool. My h wasnt keen on the fill because of fire hazard, so what you are saying boatman seems to be in line with his thoughts. Thanks again, I may look into an alternative batt to put in the roof. Re: Ceiling insulation 5Jul 13, 2009 9:25 am Darcy I wouldn't go with loose fill for all the reasons above, plus vermin infestation, mess, and degradation of time with settling etc. The standard poly or glass batts are great, just get someone else to install them. Make sure you put sarking under the tiles (with an air gap) to prevent summer heat ingress. Re: Ceiling insulation 6Jul 13, 2009 10:49 pm Speaking of vermin, we had a home the other day. Did a preduct for air conditioning, went back a few months later and rats hat chewed into the ducting and through the insulation! Those little rodents love insulation for some reason!! This was a brand new home too! Re: Ceiling insulation 7Sep 19, 2009 12:02 am TheBoatMan Loose fill can be a little nasty. If you are planning on having downlights, it can easily blow in and get near the globe causing a potential fire hazard. Roof spaces often have swirling wind in them and loose fill gets everywhere. It can also be messy if you plan on using your roof for storage or anything. The loose fill just seems to blow around everywhere. Sorry - need to correct some major misinformation here, and below with regards to vermin. 1- Loose fill can blow around - yes it can, but it can also be sprayed after installation to bind the top layer together. Movement is more of a problem with tiled rooves than sheet metal rooves. 2- There is no fire risk - the material isn’t combustible (it will smoulder but is self extinguishing) in addition it is now a requirement to fit a shield around downlights regardless of the type of insulation. (the exception being CFL downlights as they do not produce the heat of Halogens) 3 - Glass bats compress and become ineffective over time much much faster than cellulose. Class is also much more irritating and not as healthy for occupants (especially those with asthma) 4 - Cellulose is treated and will discourage then kill vermin in your roof. (a DIY version of pulped newspaper is the only way i see a house having the problems listed above) Cellulose is better at filling all the gaps and hence gives a better true R rating. I believe gaps of around 5 to 10% in the ceiling (and that’s easy to achieve with gaps around light fittings and flews) reduces the effectiveness of the insulation by close to 50%. Re: Ceiling insulation 8Sep 19, 2009 9:59 am A counter correction...... Glass wool batts do not compress. That is a misconception often peddled by the blow in brigade. Found the answer. The recommended distance is .... 1 5951 I am saying that double brick has similar thermal performance due to thermal mass effect. It will be still very interesting to see the state of your framing after 10-15… 10 29649 Hey guys building a new place through a volume builder and just wondering if i should complain to the site supervisor as we just had plasterboard installed. Looks like… 0 11239 |