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It's safe to say that cutting 100mm PIR can get in the sea
Ugh, the thought of it sends shivers down my spine. Nice idea with the tracksaw. With a dust extractor connected too? If I ever have to do that kind of thing again I'll give this a go. I found cutting to exact size too time consuming so I ended up deliberately undersized by 10mm and then expanding foamed around all the edges later.
Re the overhang, I'd consider making it a little longer if you don't have a compelling reason not too, it will really help keep the front of the building dry. With 365mm I think you'll get splashback from rain hitting the floor, and direct rain in mild wind.
Hovis
@NotThamesWater
This weekend has been all floor.
It's safe to say that cutting 100mm PIR can get in the sea - I bought a proper insulation foam saw, and really struggled to keep cuts vertical and straight.
I ended up using my track saw, and doing a lot of outdoor vacuuming to keep the PIR dust down.
Today I measured and dryfitted all of the T&G chipboard subfloor - I would have glued & screwed too, but my caulk gun snapped as soon as I tried to use it.
Then it was a race to cover it up when it decided to rain particularly heavily.
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