Mould (or mold) is a symptom. We establish whether a thermal bridge, moisture from the structure or the use of the flat is behind it – with measurements, a calculation and a report that tenants, landlords, property managers and insurers can all follow. In English, with the German terms your landlord will recognise.
Your landlord says you do not ventilate enough; you think the wall is simply too cold. An engineer's measurement settles the technical question – and gives you and your lawyer or tenants' association (Mieterverein) something solid to work with.
Mould returning after redecoration, several affected flats, the split between the owners' association and the individual owner. You need the cause, the right order of repairs and the cost – as a basis for decisions and instructions.
Mould at a viewing or in the cellar of the flat you want to buy. Is it a ventilation issue or a building issue? Find out before you sign – as part of a pre-purchase survey or on its own.
A report with findings and photos, the cause or causes with their likelihood, the split between building and use, a remediation recommendation in the right order, a cost range and practical advice on heating and ventilation. Usable as a party expert report in a dispute – in English, German or both.
We do not carry out remediation and do not refer you to remediation companies. We do not give legal advice – rent reduction (Mietminderung), who pays and deadlines are matters for your lawyer or tenants' association. And we do not write reports to order: the result is fixed once the measurements are evaluated, not before.
Fixed prices after a short call; the scope described is included. Travel within Berlin included, surroundings by arrangement. For property managers and companies prices are net; several flats at one visit are charged as a bundle.
from €350 flat · incl. 19 % VAT
house from €490 incl. VAT
from €990 flat · incl. 19 % VAT
house or several rooms from €1,290 incl. VAT
additional €290 incl. 19 % VAT
laboratory analysis via specialist lab at cost
We are civil engineers. Whether a wall is too cold, we calculate; whether the air was too humid, we read from the logger, not from the story. We apply the same standard as in reports for courts and insurers – so the report holds when the other side has it checked.
Phone +49 176 23581339 · info@ing-bassam.de · reply within one working day
In most cases, yes. We calculate whether the wall reaches the surface temperature it needs and compare that with the indoor climate that actually occurred. Only both together allow a conclusion. Where both play a part, we say so – with proportions and reasons.
Do not clean, paint over or move furniture away. Photograph the growth with the date, note since when it has been visible and how you heat and ventilate, and gather documents such as year of construction, refurbishments, earlier repairs and letters. We need access to all rooms of the flat.
A party expert report is the submission of the party that presents it; a court has to consider it but usually appoints its own expert. Rent reduction (Mietminderung), who pays and deadlines are legal questions for your lawyer or tenants' association. We provide the technical basis so that it stands up to scrutiny.
According to the mould guideline of the German Environment Agency (UBA), small, superficial growth up to about half a square metre can be removed by healthy people themselves. Larger areas, growth inside the structure and rooms used by vulnerable people belong in the hands of a specialist company – after the cause has been found, otherwise the mould comes back.
Building insurance usually only pays if the mould results from an insured event such as a burst pipe. Then a water damage survey is the right route. Mould caused by thermal bridges or by the use of the flat is usually not insured.