ᐅ Recommended Protective Measures When Removing Hot-Poured Bitumen Screed

Created on: 17 Feb 2021 18:16
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chippy79
Hello everyone,

I would like to ask for your advice and tips regarding the proper removal of hot-poured asphalt screed (approximately 50 sqm (540 sq ft) area) in an apartment and the recommended safety measures.

I plan to break up this floor layer, about 2.5 cm (1 inch) thick, myself using an 18 kg (40 lbs) demolition hammer and then dispose of the debris in a rented container. Now, I am wondering how and if I need to protect myself properly. Do I require special protective clothing, such as a respirator, coveralls, gloves, goggles, etc.? Should I set up a clean/dirty area (decontamination zone) or similar?

The building was constructed in 1972, and the original building permit/planning permission states that cast asphalt was to be used. The floor covering in the rooms above is only floating parquet or laminate.

Image 1 – shows the test drilling.
Image 2 – is the core sample of the screed – I believe it is cast asphalt.
Image 3 – below the screed there appears to be a type of loose fill insulation made from coconut fibers.

Beiger Teppich oben; staubiger Boden mit zwei runden Erdöffnungen, Kies und Schutt.

Kleiner, rostiger Metallring mit Erdkrümeln auf braunem Holzboden.

Runde Rohröffnung im Boden mit Kies, Steinen und orangefarbenen Wurzeln darin.


What do you think?

Thanks for your tips.

Best regards,
chippy79
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chippy79
25 Feb 2021 14:21
Okay, I have now performed a burn test on the dark-colored “building material.” After a short time, it started to smoke, and after about 1 minute under the flame, liquid black material was already dripping. It also smells tar-like, similar to freshly laid asphalt on a road. So, if it is NOT mastic asphalt, what other building material could it be? Any guesses?

Additionally, it smells somewhat tar-like when I hammer into the ground.

Does this burn test result change your assessment?

Thank you again for the advice 🙂
KlaRa25 Feb 2021 14:52
It will be a bitumen emulsion screed, which is also known as a "compression screed."
From my perspective, it is not a poured asphalt for several reasons.
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chippy79
25 Feb 2021 15:35
Ok, thank you very much for the feedback.

If it is bitumen emulsion screed, would that affect the disposal methods or costs in any way?
Do I need to dispose of this material through a waste disposal company (container), or could I take it to a recycling center?

Aufgeplatzte braune Dämmfolie mit dunklen Fasern an Innenwand und Boden.


And could you possibly estimate what type of insulation is laid underneath and whether I could also dispose of that at the recycling center?

Dichte Ansammlung feinster brauner Wurzeln und Fasern, wirr verflochten.


Many thanks.