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EPS versus XPS Insulation for Foundations


Triassic

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Well after 18 months delay selling our previous house and 6 months demolishing the dilapidated bungalow on our self Build site, we are finally digging out for foundations. 

 

So I've been getting quotes for the Insulation for the insulated foundations. I’ve received three for EPS and all have come back with a price between £8,100 and £9,800. I’ve then received a bit of curved ball from a company who no longer do the EPS, but have quoted based on XPS (extruded) and their quote is £3,500 less than the lowest EPS quote. 

 

Is there any disadvantage of using XPS. Any help or suggestions greatfully received.  

 

 

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