i've had spray foam on mine now for 10 years and it is fine. no more slipped tiles, a very warm useable roof space reduced heating costs and no condensation that people that don't know scare people with.
Dave Liquorice wrote:
I hope you don't ever want to sell it........ .andy
To email, substitute .nospam with .gl
So in another few years be prepared for *total* replacement of the entire roof structure - or if you sell, a survey giving a negative report.
Roof timbers *need* to be ventilated on all sides - if you look at a new roof you'll see ventilators fitted. Older roofs will allow enough airflow without.
I'm not about to be persuaded that spraying roof timbers with foam is a good idea, but the key reason roof spaces are ventilated is because the insulation is at ceiling level, the roof space is therefore very cold and condensation on the timber is likely without adequate ventilation. If you move the insulation to rafter level the air in the loft space is that much warmer and the risk of condensation substantially reduced.
Yes. Slate roofs are not watertight, the beams will get wet, and water will stay there. That would be a worrying scenario.
Regards, NT
But increased on those parts of the rafters etc above the foam?
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.