ᐅ Reuse Styrodur 3035 CS insulation from a demolition?

BeHaElJa schrieb:
The structural engineering specifies: "All strip foundations will have a continuous reinforcement of 2ø10 bars at the top and bottom, laid unless otherwise specified with a higher dimension."

Sorry, I didn’t read carefully earlier and had the bond beam in mind.

If the execution deviates from the plan, there must be an explanation for it; this is usually provided by the structural engineer.

Regarding the materials used, I still don’t see a major problem as long as they are suitable for use. I’m simply a fan of recycling. I also don’t see why you should worry that only reclaimed materials will be used. However, I do see the necessity for you personally to involve an expert. That they will then also accompany your construction is just the icing on the cake.

Best regards, Bauexperte

Perimeter insulation is only fully bonded when there is hydrostatic pressure from water – in that case, the joints must also be sealed. This is typically done using a thick bitumen coating.

Although expanding foam is not water-soluble, it is not waterproof either.

The insulation is only spot-bonded when there is no hydrostatic water pressure – that was the case for us. We simply applied a few dollops of adhesive to the panels and pressed them against the wall.

I’m not sure whether bonding is necessary at all for insulation under a slab – I believe a polyethylene (PE) membrane is used in that case.

We do agree on consulting an expert, but you still owe me an answer regarding the tick.

Called a structural engineer, who said that using steel fiber concrete is fine and even tends to be of higher quality. This is not a foundation but the frost protection strip.

The building inspector is not reachable.

Today, a ring beam was built on the strip. The mentioned slabs are to be placed on this ring beam.

Just talked to the builder – he said that if the panels cause us too much trouble, he would replace them with new ones.

Also had a brief conversation with the mason who covered the entire surface with waterproof slurry – that sounded reasonable as well.

Hello, what have you done with the Styrodur? Where exactly are you? I can also pick it up if you are still there.
Best regards,
Tuncer

These panels are not mine. Some were used for the perimeter insulation (between the foundation slab and the brickwork), and some were picked up.

The base has now also been coated with bitumen; everything looks fine so far.