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Drying and Cleaning After Sewage: What the Process Covers

After sewage has been removed from a property, the work is not finished. The rooms that were affected still need to be cleaned, the structure still needs to be dried, and the materials that were in contact with the sewage still need to be assessed. That second stage of the job is as important as the first, because a property that has had its sewage removed but not its cleaning and drying done properly is a property where damp and growth can follow.

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This guide explains drying and cleaning after sewage in general terms, including the removal of affected materials where necessary. The methods described are confirmed with the operator, and no promise is made here that a property is safe to re-enter after the work. The sewage cleanup page sets out the service in general terms.

Cleaning after sewage in general terms

Cleaning after a sewage loss covers the surfaces that remain in the property once the contaminated water has been removed and the affected porous materials have been taken out. That cleaning is done by professionals, with equipment and methods that a household clean cannot provide, and the exact methods used are confirmed with the operator, because this guide does not prescribe a particular product or method. What can be said in general terms is the order of the work: the water is removed first, the affected materials are assessed and removed where necessary, the remaining surfaces are cleaned, and the structure is dried.

The cleaning covers hard surfaces such as tile, sealed concrete and glass, and it covers the framing, subfloor and other surfaces that are exposed when affected material is removed. Those surfaces are cleaned before any new material goes in, so that the rebuilt wall or floor starts from a clean base. Porous materials that have been in contact with sewage, such as carpet and carpet padding, drywall that has soaked up contaminated water, and insulation, are usually removed rather than cleaned, because they cannot be reliably cleaned once contaminated.

Containment is part of the cleaning process, because the work area is separated from the rest of the property while the work is going on, so that contamination does not spread into rooms that were previously unaffected. The people doing the work use protective equipment, and the affected materials are removed carefully and bagged before being taken out of the property. Those steps are there for a practical reason: disturbing contaminated material without containment can spread it through the house, including through air conditioning ducts.

Affected-material removal where necessary

The decision to remove a material after a sewage loss is made by the professional on the basis of the material, the extent of the contamination, and the moisture readings, not on the basis of how the material looks. Porous materials that have absorbed sewage are usually removed, because cleaning the surface does not deal with what has soaked through the material. Carpet and carpet padding, drywall, insulation and cardboard are in that group, and they are removed rather than cleaned in most cases.

Non-porous materials can often be cleaned rather than removed, because contamination on a hard surface can be dealt with without taking the material out. Tile, glass, sealed wood and metal are in that group, and the decision for each is made on the basis of its condition and the extent of the contamination. The carpet and floor water damage repair page covers the flooring side of that decision in general terms, and the ceiling and wall repair page covers the wall side.

The removal work is done carefully, because the affected materials are contaminated and need to be handled as such. They are cut out or lifted in sections, bagged, and taken out of the property without being carried through clean rooms. That handling is part of the professional process, and it is another reason why the work is professional-only: a homeowner who pulls up contaminated carpet or cuts out damp drywall without containment and protective equipment risks spreading contamination through the house.

Drying and Cleaning After Sewage: What the Process Covers — Florida water damage guide

Drying after sewage

Drying after a sewage loss follows the same principles as drying after any water loss, and the structural drying and dehumidification page explains the process in general terms. Air movement and dehumidification are the two parts of the process, and they work together: air movement carries moisture out of materials, and dehumidification removes that moisture from the air so it does not settle back into the structure. The process takes time, and no duration can be promised for any specific property.

Moisture readings are what confirm the drying has worked. A wall that feels dry to the touch may still be damp inside, and a floor that looks dry may still hold moisture underneath. Readings taken during drying show whether the structure is actually drying or whether damp is holding in one area, and readings taken at the end confirm whether the job is complete. After a sewage loss, the drying check matters more, not less, because damp left behind after a contaminated loss can lead to mold growth in the same way as damp after a clean-water loss.

The drying stage is also when the moisture source is confirmed as dealt with. If a drain is still backing up, or if water is still getting in, drying will not hold, and the problem will return. That is why the source of the sewage is dealt with before the drying starts, and why the drying readings are checked again before the property is closed up. A wall that is closed while it is still damp is a wall that will need to be opened again.

No safe-to-re-enter promise

It is important to be clear about what this guide does not promise. It does not promise that a property is safe to re-enter after sewage cleanup, and no such promise is made here. That decision belongs to the professional who carried out the work, on the basis of what was found, what was removed, what was cleaned, and what the moisture readings showed when the work was finished. A homeowner should not treat a property as back to normal until that professional has confirmed the work is complete.

Keeping a record of the work is useful: what was removed, what was cleaned, what the moisture readings were, and when the follow-up checks were done. That record helps if a problem recurs, and it helps with any insurance claim, because it shows the loss was dealt with step by step. It also helps the next professional who looks at the property, because they can see what was done and what was found rather than starting from scratch.

After the work is complete, the affected rooms should be checked over the following weeks for any sign of damp, smell or mold. If a sign appears, the next step is a professional look rather than a wait-and-see approach. If the property is in the Miami area, the water damage restoration in Miami page is a starting point for arranging a visit. Drying and cleaning after sewage are the second half of the job, and they deserve the same care as the removal that came first. The rooms that were affected should be looked at again in the weeks that follow, because growth can appear after the drying equipment has gone, and it can appear in places that are easy to miss. A musty smell, a damp patch, or discoloration on a wall are all signs worth following up, and catching them early means the problem is still small. A check that finds nothing is still worth doing, because it confirms the work has held.

Key Takeaways

Cleaning after a sewage loss covers the surfaces that remain in the property once the contaminated water has been removed and the affected porous materials have been taken out.
The decision to remove a material after a sewage loss is made by the professional on the basis of the material, the extent of the contamination, and the moisture readings, not on the basis of how the material looks.
Drying after a sewage loss follows the same principles as drying after any water loss, and the structural drying and dehumidification page explains the process in general terms.
It is important to be clear about what this guide does not promise.

Your Next Step

If this guide matches what you found at home, the next step is a visit — not a guess. Call and describe what you found, and the visit is arranged from what you describe. The Sewage Cleanup page explains what that service covers, and the water damage restoration page explains how the full job is put together when more than one room is affected.

Do not step into standing water where electrics may be involved, and if water is still coming in, turn off the main water supply for the home where you can reach it safely.

Keep the guides on this site bookmarked: the first guide, the signs guide, and the preparation guide cover the checks worth repeating — after moving in, and after a storm or heavy rain.

Water damage help is available across Florida. See water damage restoration in SoSo, FL for one local example, or find your town on the service areas page.