Polyiso / Discussions

...polyiso board loose its thermal properties?  Does it go below R4.5 per inch?  Is it usless at -15C ?  or equal to XPS  ? Polyiso starts to fall off in R value around 5-10C , but it's not a catastrophic failure, and given your use of Celsius and ‘West Coast’, I’m thinking you may be around Vancouver? Where exactly are y...

Polyiso foam board :  fiber faced (white) (IKO Therm 3) or the older product,  Organic faced (gray) polyiso. Both products have visible 2mm (+/-) holes in both sides of the facing material; My Question regarding Polyiso (moisture and thermo) performance:   Central, Vancouver island, Canada.   Below grade 8’ total heigh...

...Polyiso, EPS & XPS rigid insulation boards I have a few questions that will help us pin down the best way forward for you - How old is the home? Is there an exterior membrane on the basement wall? And have you ever had any flooding issues, either from bulk water, or just high water tables?