Guides · Case library
Find guides and experience that match your basement problem or the project you are planning.
A good place to start
A wet patch is a symptom, not a specification for a new drain or a waterproof coating. Its location and timing are the useful starting points.
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Water through the basement floor. Start by documenting changes after rain, wall-to-floor junction and water pressure and groundwater. The purpose is to understand the building condition and constraints before choosing products, finishes or a work sequence.
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Mould in a basement. Start by documenting hidden organic materials, condition of the substrate and dew point and surface temperature. The purpose is to understand the building condition and constraints before choosing products, finishes or a work sequence.
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Fresh air, moisture removal and water entering the structure are different issues. A useful ventilation plan says which of them it will address.
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Basement excavation and floor lowering. Start by documenting existing foundation depth, load-bearing support and stability and existing and planned floor build-up. The purpose is to understand the building condition and constraints before choosing products, finishes or a work sequence.
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New paint and flooring are the visible end of a basement renovation. The difficult decisions usually concern water, structure, floor levels and services earlier in the project.
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Projects
See what was investigated, carried out and documented in other basements.
A Danish project report describes approximately one metre of water in a basement after a cloudburst in 2024. The case separates emergency pumping from the later work to manage
Denmark
A ventilation visit in Gentofte, Denmark, included a smaller masonry task: loose render was removed from an exterior basement stairwell, the sound background prepared and the
Denmark · Gentofte
A low basement in Charlottenlund, Denmark, was lowered by about 120 cm and given a larger opening towards the garden. The structural and masonry phase produced an unfinished w
Denmark · CharlottenlundBASEMENT ATLAS
Understand the moisture, plan the work and collect useful evidence before choosing a solution.
Compare indoor and outdoor air with the temperature of a cold basement surface.
Warm weather does not necessarily dry a cool basement. Air entering through a window can reach its dew point when it meets the cold walls, floor or pipes.
Two prices can describe two different basements. This checklist helps you turn quotations into a shared, reviewable scope before you choose a contractor.
Deep practical guides built around diagnosis, construction sequence and documented outcomes. Guides link back to real cases and community discussions instead of standing alone.
Practical checklists for documenting a basement before work begins, comparing contractor quotes and checking the important details before handover.
Side-by-side guides for common basement decisions. The right option depends on the actual moisture source, structure, drainage and intended use.
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Guides reference technical sources. Project cases document practical experience. Learn how we use and assess our sources.