Mould on blinds is common in damp rooms, bathrooms, kitchens, bedrooms with condensation, coastal homes, poorly ventilated spaces and windows that stay closed for long periods. To clean mould off blinds safely, first identify the blind type, remove loose dust, avoid soaking the material, use a suitable mild cleaning method, dry the blinds properly and improve airflow so the mould is less likely to return.
The best way to remove mould from blinds depends on the blind material. PVC, aluminium and some faux wood blinds may tolerate gentle damp wiping. Fabric blinds, roller blinds, vertical blinds, Roman blinds, block-out blinds, wooden blinds and woven blinds need more care because too much moisture or the wrong chemical can cause staining, warping, water marks, fabric damage or permanent discolouration.
For light surface mould, careful home cleaning may help. For mouldy blinds with visible staining, musty smells, fabric contamination, repeated mould growth, block-out backing, wooden slats, woven fibres or heavy build-up, professional blind cleaning is often the better option because it can use a more controlled process, professional cleaning solutions, fabric-safe methods and extraction where suitable.
Quick answer: how to clean mould off blinds
To clean mould off blinds, start by moving carefully and avoiding harsh scrubbing. Wear gloves if needed, open windows for airflow and vacuum or dust the blinds first if there is loose surface dirt.
For hard blinds such as PVC, aluminium or some faux wood blinds:
- Dust or vacuum the blinds first.
- Wipe a hidden test area.
- Use a lightly damp cloth with mild soapy water.
- Wipe the mould-affected areas gently.
- Rinse with a clean damp cloth if suitable.
- Dry the blinds properly.
- Improve airflow around the window.
For fabric blinds, roller blinds, vertical blinds, Roman blinds, wooden blinds, woven blinds and block-out blinds, avoid soaking. These materials can stain, warp, shrink, watermark or hold moisture if cleaned incorrectly.
If the mould has spread into the fabric, left black marks, caused a musty smell or keeps coming back, professional blind cleaning is usually more practical and safer than aggressive DIY cleaning.
Why mould grows on blinds
Mould grows where there is moisture, poor airflow and organic residue such as dust, skin particles, cooking residue or general indoor dirt.
Blinds are especially prone to mould because they sit close to windows, where condensation often forms. Moisture collects on glass, window frames and nearby blind material. If the blinds stay damp or the room has poor airflow, mould can start growing.
Common causes of mould on blinds include:
- condensation on windows
- poor ventilation
- damp bedrooms
- bathrooms with steam
- kitchens with cooking moisture
- coastal humidity
- closed rooms
- windows that are rarely opened
- blinds touching damp window glass
- curtains or blinds blocking airflow
- dust and residue sitting on blind surfaces
- water leaks or damp walls near windows
Cleaning the blinds is only one part of the solution. If the moisture problem remains, mould may return.
Mould, mildew and mold: are they the same search intent?
People use different words for the same problem. In South Africa and the UK, most people search for mould. Some people search for mildew, especially when the growth looks lighter or powdery. Others use the US spelling mold, especially when searching online.
For this article, the cleaning advice applies to searches such as:
- how to clean mould off blinds
- how to remove mould from blinds
- how to get mould off blinds
- how to clean mildew off blinds
- how to clean mold off blinds
- how to remove mold from blinds
The exact method still depends on the blind material and how badly the blinds are affected.
Before cleaning mould off blinds, check the blind type
Before cleaning mould off blinds, identify the blind type.
Common blind types include:
- fabric blinds
- roller blinds
- vertical blinds
- Venetian blinds
- wooden blinds
- wooden Venetian blinds
- aluminium blinds
- PVC blinds
- faux wood blinds
- Roman blinds
- zebra blinds
- block-out blinds
- woven blinds
- bamboo or natural woven blinds
- honeycomb or cellular blinds
- vinyl blinds
This matters because mould removal is not only about killing or wiping away the mould. The cleaning method must also protect the blind material.
A PVC blind may tolerate gentle wiping. A wooden blind may warp if over-wet. A fabric blind may stain or develop water marks. A block-out roller blind may have backing that can be damaged by strong chemicals or excess moisture.
Basic safety before cleaning mouldy blinds
Mould cleaning should be handled carefully, especially if there is visible black mould, a strong musty smell, heavy growth or repeated mould returning after cleaning.
Before you start:
- open windows where possible
- improve ventilation
- wear gloves if the mould is visible
- avoid breathing in dust or mould spores
- avoid dry brushing heavy mould into the air
- keep children and pets away from the cleaning area
- avoid mixing cleaning chemicals
- avoid bleach on fabrics, wood, coated blinds or coloured materials unless the manufacturer clearly allows it
- test any cleaning solution on a hidden area first
If the mould is severe, widespread, linked to damp walls, or keeps coming back, the moisture source should be addressed. Blind cleaning can improve the blinds, but it cannot fix an ongoing damp or condensation problem by itself.
What is the best way to clean mould off blinds?
The best way to clean mould off blinds depends on the blind material.
As a simple guide:
| Blind type | Best mould-cleaning approach |
|---|---|
| PVC blinds | Gentle damp wiping with mild soapy water |
| Aluminium blinds | Dust first, then gentle damp wiping |
| Faux wood blinds | Damp wiping with careful drying |
| Wooden blinds | Dry dusting first, minimal moisture, careful drying |
| Fabric blinds | Gentle vacuuming and professional cleaning if mould is visible |
| Roller blinds | Avoid soaking; spot-clean carefully or use professional cleaning |
| Vertical blinds | Clean each panel carefully; professional cleaning for fabric panels |
| Roman blinds | Avoid soaking folds and lining; professional cleaning is often safer |
| Block-out blinds | Avoid harsh chemicals and excess moisture |
| Woven blinds | Gentle dry or low-moisture cleaning; avoid soaking |
| Honeycomb blinds | Avoid soaking; mould inside cells can be difficult to clean |
For small surface mould on hard blinds, careful home cleaning may work. For mould on fabric blinds, roller blinds, vertical fabric blinds, Roman blinds, wooden blinds, woven blinds or block-out blinds, professional cleaning is often the better option.
How to clean mould off hard blinds
Hard blinds include PVC, aluminium, faux wood and some vinyl blinds. These are usually easier to clean than fabric or wooden blinds because they can often tolerate gentle damp wiping.
To clean mould off hard blinds:
- Open the window for airflow.
- Dust or vacuum the blinds gently.
- Close the blinds so the slats are flat.
- Wipe a hidden test area first.
- Use a clean cloth with mild soapy water.
- Wipe each mould-affected slat carefully.
- Tilt the blinds the other way and repeat.
- Rinse with a clean lightly damp cloth if needed.
- Dry every slat properly.
- Clean the window sill and frame as well.
Drying is important. If moisture stays on or around the blinds, mould can return.
How to clean mould off roller blinds
Roller blinds can be tricky because many are made from fabric, sunscreen material, coated material or block-out backing. This means you should avoid soaking them unless the manufacturer clearly says they are washable.
To clean mould off roller blinds:
- Roll the blind down fully.
- Open windows for airflow.
- Vacuum gently with a soft brush attachment.
- Test a hidden area before using moisture.
- Blot mould marks lightly with a damp cloth and mild cleaning solution if suitable.
- Avoid rubbing aggressively.
- Avoid soaking the blind.
- Let the blind dry completely before rolling it up.
Do not roll up a damp roller blind. This can trap moisture and make odours or mould worse.
For heavy mould, black mould marks, musty smells or block-out roller blinds, professional cleaning is usually safer than trying to scrub the blind at home.
How to remove mould from roller blinds
To remove mould from roller blinds, the goal is to clean the affected surface without damaging the fabric, coating or backing.
This is why the method should be gentle:
- avoid bleach unless the care instructions allow it
- avoid hot water
- avoid heavy soaking
- avoid scrubbing with a hard brush
- avoid rolling the blind up while damp
- avoid spraying fragrance over mouldy fabric
Professional roller blind cleaning can be effective because it uses controlled moisture, suitable cleaning solutions and extraction where appropriate. This can remove more residue than basic wiping while reducing the risk of over-wetting.
How to clean mould off fabric blinds
Fabric blinds can hold mould more deeply than hard blinds because the fibres absorb moisture and residue.
To clean mould off fabric blinds at home:
- Open windows and improve airflow.
- Vacuum gently with a soft brush attachment.
- Avoid aggressive brushing.
- Test a hidden area before spot cleaning.
- Blot small marks with a lightly damp cloth if suitable.
- Avoid soaking the fabric.
- Allow the blind to dry fully.
This may help with light surface marks. However, if the mould is visible, black, spread across the fabric or leaving a musty smell, professional cleaning is usually the better option.
Professional fabric blind cleaning can in many cases remove or improve mould-related odours, surface dirt and general marks. However, permanent mould staining, long-set black marks, dye changes or fabric damage may not fully reverse.
How to get mould off fabric blinds
To get mould off fabric blinds, avoid treating them like hard plastic blinds. Fabric needs a softer approach.
The safest direction is:
- dry dust or vacuum first
- avoid bleach on coloured or delicate fabrics
- avoid soaking
- avoid rubbing hard
- use controlled moisture only where suitable
- dry the fabric completely
- improve airflow around the window
If the fabric blind is valuable, delicate, lined, old, block-out backed or heavily mouldy, professional blind cleaning is usually safer than DIY cleaning.
How to remove mould stains from fabric blinds
Mould stains on fabric blinds can be difficult because the visible mark may not only be surface dirt. It may be a stain that has bonded into the fibres or caused permanent discolouration.
Professional cleaning can in most cases remove or improve mould stains, especially if the mould is recent and mostly on the surface.
However, some mould stains may not fully come out, especially if:
- the mould has been there for a long time
- the fabric is sun damaged
- the material is delicate
- the blind has been over-wet before
- the stain has changed the fabric colour
- there is mould staining inside the fibres
- the backing or lining is damaged
- the blind has repeated damp exposure
The goal should be realistic improvement, not a guarantee that every mould stain will disappear completely.
How to clean mould off vertical blinds
Vertical blinds can be made from fabric, PVC or other materials. The cleaning method depends on the material.
To clean mould off vertical blinds:
- Close the vertical blinds.
- Vacuum each panel gently from top to bottom.
- Test a hidden area before damp cleaning.
- Wipe hard panels with mild soapy water where suitable.
- Blot fabric panels carefully instead of soaking them.
- Clean one panel at a time.
- Dry each panel properly.
- Keep the panels separated while drying where possible.
For fabric vertical blinds, professional cleaning is often better because each hanging panel can hold dust, odours and mould-related residue. Professional cleaning can treat the panels more thoroughly while helping avoid over-wetting.
How to remove mould from vertical blinds
To remove mould from vertical blinds, first check whether the blind panels are fabric or hard material.
Hard vertical blind panels may tolerate gentle wiping. Fabric vertical blinds need more care because they can stain or develop water marks if over-wet.
Professional cleaning is often useful for vertical blinds because:
- each panel needs individual attention
- mould can sit along the lower edges
- dust and moisture can collect between panels
- fabric panels may hold odours
- panels can be awkward to remove and reinstall
- incorrect washing can distort the panels
For black mould or heavy mould spots on vertical fabric blinds, professional cleaning is usually more practical than trying to scrub each panel by hand.
How to clean black mould off vertical blinds
Black mould on vertical blinds should be handled carefully. Start by improving airflow and avoiding dry brushing that may release particles into the room.
For hard vertical blinds, gentle wiping may help. For fabric vertical blinds, black mould can be more difficult because the mark may be embedded in the material.
Use a cautious approach:
- vacuum gently if suitable
- avoid aggressive brushing
- avoid soaking
- avoid bleach on fabric panels unless the care instructions allow it
- test before spot cleaning
- dry fully
- improve room ventilation afterwards
Professional blind cleaning can in most cases remove or improve black mould marks and musty odours, especially when the mould is recent, mostly on the surface and the blind material can be cleaned safely. Severe black mould staining may not fully disappear, especially if the marks have bonded into the fabric or the material has already been damaged.
If the mould is caused by ongoing dampness, the room also needs better ventilation or moisture control.
How to clean mould off Venetian blinds
Venetian blinds have horizontal slats, usually made from aluminium, PVC, faux wood or wood.
To clean mould off Venetian blinds:
- Close the slats.
- Dust or vacuum first.
- Wipe a hidden test area.
- Use a lightly damp cloth with mild soapy water on suitable materials.
- Clean each slat individually.
- Tilt the slats the other way and repeat.
- Dry each slat properly.
For aluminium, PVC or faux wood Venetian blinds, this may work well for light surface mould.
For wooden Venetian blinds, avoid excess moisture. Wooden slats can warp, swell, crack or lose finish if over-wet.
How to clean mould off wooden blinds
Wooden blinds need special care because water can damage the wood.
To clean mould off wooden blinds:
- Dust gently first.
- Use a vacuum with a soft brush attachment if suitable.
- Avoid soaking the slats.
- Test a hidden area before using any moisture.
- Use a barely damp cloth only where suitable.
- Dry immediately.
- Improve airflow in the room.
Do not wash wooden blinds in a bath or spray them heavily with water. Do not use harsh chemicals unless the manufacturer confirms they are safe for the finish.
If the mould has affected the wood finish, caused dark staining or keeps returning, professional cleaning may improve the blinds but may not fully reverse permanent wood damage.
How to clean mould off wooden Venetian blinds
Wooden Venetian blinds combine the detailed slat-by-slat cleaning of Venetian blinds with the moisture sensitivity of wood.
This means they need a cautious approach:
- clean one slat at a time
- use minimal moisture
- dry each slat immediately
- avoid soaking wooden sections
- avoid harsh scrubbing
- avoid leaving the blinds damp
Professional cleaning can be safer for wooden Venetian blinds with mould because the process can be more controlled than DIY scrubbing.
How to clean mould off Roman blinds
Roman blinds are fabric blinds with folds. These folds can trap dust, moisture and odours, which makes mould more difficult to clean at home.
To clean mould off Roman blinds:
- Keep the blind extended if possible.
- Vacuum folds gently.
- Check the care label.
- Test a hidden area before spot cleaning.
- Avoid soaking the fabric or lining.
- Allow the blind to dry fully.
- Improve airflow around the window.
Professional cleaning is often better for Roman blinds because the folds, stitching and lining can react badly to too much water or harsh cleaning.
How to clean mould off block-out blinds
Block-out blinds, especially block-out roller blinds, may have backing or coating that can be damaged by harsh chemicals, hot water or heavy soaking.
To clean mould off block-out blinds:
- roll the blind down fully
- vacuum or dust gently
- test any cleaning method first
- avoid bleach unless the care instructions allow it
- avoid soaking
- avoid scrubbing the backing
- dry fully before rolling up
Professional cleaning is usually more practical for block-out blinds with mould because the cleaning process can be controlled while protecting the backing as much as possible.
How to clean mould off woven blinds
Woven blinds can trap dust and mould in the textured fibres. This makes them harder to clean than smooth blinds.
To clean mould off woven blinds:
- Vacuum gently with a soft brush attachment.
- Avoid soaking the weave.
- Avoid aggressive scrubbing.
- Use low moisture only if suitable.
- Dry thoroughly.
- Improve airflow around the window.
Natural woven blinds, bamboo blinds and textured fibre blinds may react badly to water. Professional cleaning can help remove or improve dust and mould-related residue while reducing the risk of damaging the weave.
How to clean mildew off blinds
Mildew on blinds often appears as lighter surface growth or a stale smell. The cleaning method is similar to mould cleaning, but the problem may be less severe if caught early.
To clean mildew off blinds:
- remove loose dust
- improve airflow
- clean hard blinds with a lightly damp cloth where suitable
- avoid soaking fabric or wood
- dry the blinds fully
- clean the nearby window sill and frame
- reduce condensation where possible
If mildew keeps returning, the issue is likely moisture and ventilation, not only dirty blinds.
Can vinegar remove mould from blinds?
Diluted vinegar is sometimes used for household mould cleaning, but it is not suitable for every blind material.
Vinegar may be risky for:
- wooden blinds
- delicate fabric blinds
- coloured fabric blinds
- coated roller blinds
- block-out blinds
- woven blinds
- natural fibre blinds
- old or sun-weakened materials
- special finishes
For many blinds, mild soapy water is safer for basic home cleaning. Always test first.
For mouldy fabric blinds, professional cleaning is often safer than experimenting with vinegar, bleach or strong home chemicals.
Can bleach be used to clean mould off blinds?
Bleach should be used very carefully around blinds.
Bleach may damage:
- coloured fabric
- wooden blinds
- block-out backing
- roller blind coatings
- woven fibres
- natural materials
- delicate fabric
- metal finishes
- stitching or lining
Bleach can also lighten fabric or leave marks that cannot be reversed. It may appear to remove colour from mould staining without actually making the blind material look evenly clean.
For hard white PVC blinds, some people may use stronger cleaning methods, but only if the material can safely handle them. For most blind types, especially fabric, wood, woven and coated blinds, bleach is risky.
Why professional blind cleaning is effective for mouldy blinds
Professional blind cleaning can be especially effective for mouldy blinds because mould is usually linked to more than visible surface dirt.
Mouldy blinds often have a combination of:
- moisture
- dust
- stale odours
- residue
- surface marks
- fabric contamination
- condensation exposure
- dirty window frames
- trapped particles in folds or woven texture
Professional cleaning can help by using:
- better dust removal before wet cleaning
- suitable cleaning solutions for the blind type
- controlled moisture application
- extraction for suitable fabric blinds
- careful treatment of general marks
- odour removal or improvement
- a more thorough process than surface wiping
- on-site cleaning while blinds remain hanging where suitable
This is especially valuable for fabric blinds, vertical blinds, roller blinds, Roman blinds, zebra blinds, woven blinds and block-out blinds because these materials can be damaged by over-wetting or harsh home chemicals.
Professional cleaning can in most cases remove or improve mould-related odours, surface residue and many general marks, especially where the mould is recent, accessible and mostly on the surface. However, permanent mould staining, fabric discolouration, sun fading, old water marks, material damage or recurring mould caused by damp conditions may not fully reverse.
Professional mould cleaning vs DIY blind cleaning
| DIY blind cleaning | Professional blind cleaning |
|---|---|
| Good for small surface mould on hard blinds | Better for mouldy fabric, roller, vertical and delicate blinds |
| Usually cloth, mild soap and water | Professional cleaning solutions and equipment |
| Can over-wet fabric or wood | Controlled moisture where suitable |
| Can leave residue if not rinsed or dried properly | More controlled cleaning and drying guidance |
| May struggle with musty odours | Can remove or improve odours in most cases |
| May only improve the surface | Can clean more thoroughly where the material allows |
| Customer does the work | Technician handles the cleaning process |
| Risky on coated, wooden or woven blinds | Better method selection for different blind types |
DIY cleaning may be enough for light mould on hard blinds. Professional cleaning is usually better where the blinds are fabric, mouldy, stained, odour-affected, delicate, large, difficult to remove or repeatedly affected by moisture.
When DIY mould cleaning may be enough
DIY blind cleaning may be enough when:
- the mould is very light
- the blinds are hard PVC, aluminium or faux wood
- there is no strong musty smell
- there are no deep stains
- the blinds are easy to clean and dry
- the mould has not spread
- the material is not delicate
- the room moisture issue has been fixed
In these cases, gentle cleaning and proper drying may improve the blinds.
When professional blind cleaning is the better option
Professional blind cleaning is usually the better option when:
- mould is on fabric blinds
- mould is on roller blinds
- mould is on vertical fabric blinds
- mould is on Roman blinds
- mould is on block-out blinds
- mould is on woven blinds
- mould is on wooden blinds
- black mould marks are visible
- the blinds smell musty
- mould keeps returning
- the blinds are large or difficult to remove
- the blinds are in several rooms
- the property is a rental, guesthouse or office
- the customer wants a safer and more convenient process
- DIY cleaning may damage the material
This is where professional on-site blind cleaning becomes valuable. The blinds can often be cleaned while hanging, reducing the hassle of removal and reinstalling.
How to stop mould coming back on blinds
Cleaning the blinds helps, but preventing mould from returning usually means controlling moisture.
To reduce mould returning on blinds:
- open windows when possible
- improve ventilation
- use extractor fans in bathrooms and kitchens
- reduce condensation on windows
- wipe window frames when they are wet
- keep blinds slightly away from damp glass where possible
- avoid leaving blinds damp after cleaning
- dry blinds fully before rolling or stacking them
- clean dust regularly
- improve airflow behind blinds
- address leaks or damp walls
- use a dehumidifier in damp rooms if needed
Mould can return if the room stays damp. The best result comes from cleaning the blinds and improving the conditions that caused the mould.
Blind cleaning prices and booking options
If you want to understand the cost before booking, see the blind cleaning prices in South Africa guide.
Blind cleaning prices may depend on the number of blind drops, blind length, blind type, material and whether the blinds are standard length or extra length.
To view listed options, visit the blind cleaning service page and use the Get Rates & Availability CTA to select your location, view prices and check live open slots.
Blind cleaning services by area
Blind cleaning availability can vary by area. You can view listed blind cleaning options in major areas here:
- Blind cleaners in Sandton
- Blind cleaners in Randburg
- Blind cleaners in Johannesburg
- Blind cleaners in Pretoria
- Blind cleaners in Cape Town
- Blind cleaners in Durban
You can also browse all available service areas on the main CleanLab SA locations page.
For other home and business cleaning services, visit the main professional cleaning services hub.
Why book blind cleaning through CleanLab SA?
CleanLab SA helps customers find listed blind cleaning options, view upfront pricing where available and book online without needing to phone around for every quote.
For mouldy blinds, this is useful because different blind materials need different cleaning methods. Fabric, roller, vertical, Roman, zebra, wooden, woven, aluminium and PVC blinds may all require different levels of care, especially when moisture and mould marks are involved.
Customers can select their area, view available options and use the Get Rates & Availability CTA to check prices and open slots where available.
Booking through CleanLab SA can also help with peace of mind because the platform includes support around Booking Protection and Professional Standards.
This gives customers a clearer booking process, especially when arranging blind cleaning for homes, offices, rental properties or guesthouses.
FAQs about cleaning mould off blinds
How do you clean mould off blinds?
To clean mould off blinds, first identify the blind material. Dust or vacuum gently, test a hidden area, use a suitable mild cleaning method and dry the blinds fully. Hard blinds may tolerate damp wiping, while fabric, wooden, roller and woven blinds need more care.
How do you remove mould from blinds?
Mould can often be removed from hard blinds with careful damp wiping and proper drying. For fabric blinds, roller blinds, vertical blinds, wooden blinds or block-out blinds, professional cleaning is often safer because the wrong method can cause water marks, staining or material damage.
How do you get mould off fabric blinds?
To get mould off fabric blinds, vacuum gently, avoid soaking, test before spot cleaning and dry the fabric fully. If mould is visible, black, musty or widespread, professional fabric blind cleaning is usually the better option.
How do you clean mould off roller blinds?
Roll the blind down fully, vacuum gently, test a hidden area and blot small mould marks with a lightly damp cloth if the material allows it. Do not soak the roller blind and do not roll it up until it is completely dry.
How do you remove mould from vertical blinds?
For vertical blinds, clean one panel at a time. Hard panels may tolerate gentle wiping, while fabric vertical blinds need careful cleaning and drying. Professional cleaning is often better for fabric vertical blinds with mould, odours or black marks.
How do you clean mould off wooden blinds?
Wooden blinds should be cleaned with minimal moisture. Dust first, wipe carefully with a barely damp cloth if suitable and dry immediately. Avoid soaking wooden blinds because moisture can cause warping, swelling or finish damage.
How do you clean mildew off blinds?
Mildew can often be cleaned from hard blinds with dusting, gentle wiping and proper drying. For fabric or wooden blinds, use a cautious low-moisture approach. If mildew keeps returning, improve ventilation and reduce condensation.
Can professional blind cleaning remove mould stains?
Professional blind cleaning can in most cases remove or improve many mould-related marks and odours, especially when the mould is recent, mostly on the surface and the blind material can be safely cleaned. Permanent mould staining, old black marks, sun fading, water damage or material discolouration may not fully reverse.
Will mould come back after cleaning blinds?
Mould can come back if the room remains damp. Cleaning the blinds helps, but the cause of moisture should also be addressed. Improve airflow, reduce condensation, dry blinds properly and check for damp walls, leaks or poor ventilation.
Final answer
To clean mould off blinds, first identify the blind type. Hard blinds such as PVC, aluminium and some faux wood blinds may be cleaned with gentle dusting, mild soapy water and careful drying. Fabric blinds, roller blinds, vertical blinds, Roman blinds, block-out blinds, wooden blinds and woven blinds need more care because excess moisture or harsh chemicals can cause damage.
For light surface mould, DIY cleaning may help. For mouldy blinds with musty odours, fabric staining, black mould marks, repeated mould growth or delicate materials, professional blind cleaning is usually the better option.
Professional blind cleaning can in most cases remove or improve mould-related odours, surface residue and many general marks using a more controlled process. However, permanent mould staining, old water marks, fabric damage, sun fading or recurring mould caused by damp conditions may not fully reverse unless the moisture problem is also addressed.
