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Painting over flood water stains
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Paint problem solver
Painting over flood water stains
How to paint over stains on walls after floods

How to paint over stains on walls after floods

Repairing and repainting damaged walls after flooding can be quite overwhelming. This article will quickly guide you on how to paint over stains on walls after flood damage.

1
What happens to walls after a flood?
2
What to do after a flood in your house
3
How to fix water-damaged plasterboard
4
Treating mould and water damage
5
Paint to repair water-damaged walls
6
How to paint over stains on exterior walls

How To Guides

Choose & Use Colour
How to use the Dulux Colour Visualisation Tool
How to use colour in your home
How to use a colour wheel
Using and testing colour with samples
How to create a colour scheme
How to choose exterior colour schemes
Tips to create a monochromatic space
Colour blocking in your home
How to create a feeling of fun in your home
How to create a feeling of happiness in your home
Using colour to elevate small spaces
How to make your workspace more productive
Choose Paint
How to choose a sheen level
Calculate how much paint you will need
Painting and product advice
Prepare Your Surface
Prepare interior surfaces
Prepare exterior surfaces
Treat and prevent mould
Taping and wall preparation
How to paint over interior effects paint
Painting & Application Techniques
How to paint brick
How to paint walls
How to paint ceilings
How to paint stripes
How to paint doors and trims
How to paint your front door
How to repaint a picket fence
How to paint your house following flood damage
How to use spray paint
How to apply Duramax® spray paints
Painting Tools & Tips
How to use a paint brush
How to use a paint roller
How to use spray paint
Paint safety
Clean Up & Disposal
Paint clean up and disposal
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When droplets appear on acrylic paint
Yellowing
Wrinkling
Sagging
Roller spattering
Poor stain resistance
Poor sheen uniformity
Poor scrub resistance
Poor hiding power
Poor flow and levelling
Roller marks / stipple
Picture framing
Mud cracking
Interior lapping
Foaming or cratering
Cracking, flaking or peeling
Interior burnishing
Interior blocking
Tannin staining
Surfactant leaching
Using Specialty Finish Paints
How to paint using Dulux Design Rust Effect
Paint using Dulux Design Copper & Copper Patina Effect
Paint using Dulux Design Metallic & Design Pearl Effect
Paint with Dulux Design Concrete Effect
How to paint using Dulux Design Chalk Effect

How To Guides

Choose & Use Colour
How to use the Dulux Colour Visualisation Tool
How to use colour in your home
How to use a colour wheel
Using and testing colour with samples
How to create a colour scheme
How to choose exterior colour schemes
Tips to create a monochromatic space
Colour blocking in your home
How to create a feeling of fun in your home
How to create a feeling of happiness in your home
Using colour to elevate small spaces
How to make your workspace more productive
Choose Paint
How to choose a sheen level
Calculate how much paint you will need
Painting and product advice
Prepare Your Surface
Prepare interior surfaces
Prepare exterior surfaces
Treat and prevent mould
Taping and wall preparation
How to paint over interior effects paint
Painting & Application Techniques
How to paint brick
How to paint walls
How to paint ceilings
How to paint stripes
How to paint doors and trims
How to paint your front door
How to repaint a picket fence
How to paint your house following flood damage
How to use spray paint
How to apply Duramax® spray paints
Painting Tools & Tips
How to use a paint brush
How to use a paint roller
How to use spray paint
Paint safety
Clean Up & Disposal
Paint clean up and disposal
Paint Problem Solver
When droplets appear on acrylic paint
Yellowing
Wrinkling
Sagging
Roller spattering
Poor stain resistance
Poor sheen uniformity
Poor scrub resistance
Poor hiding power
Poor flow and levelling
Roller marks / stipple
Picture framing
Mud cracking
Interior lapping
Foaming or cratering
Cracking, flaking or peeling
Interior burnishing
Interior blocking
Tannin staining
Surfactant leaching
Using Specialty Finish Paints
How to paint using Dulux Design Rust Effect
Paint using Dulux Design Copper & Copper Patina Effect
Paint using Dulux Design Metallic & Design Pearl Effect
Paint with Dulux Design Concrete Effect
How to paint using Dulux Design Chalk Effect

Both interior and exterior surfaces are covered, so whatever sort of damage you're dealing with, our procedure will help get you back on track. We’ll take you step-by-step through how to prep, prime and paint stains on walls. We’ll also list down which products you can use.

What happens to walls after a flood? - Types of flood damage

Flooding can cause extensive damage to a home, not just from water intrusion but also from the damp and humid conditions that can follow. The excess moisture levels lead to mould, leaving water stains and a musty odour lingering in the home long after the floodwaters have receded. Mould is more than just an eyesore; it can create serious health risks and should be dealt with immediately. Your house must be watertight as soon as possible after flooding to prevent additional paint damage.

Find out how to treat and remove mould from painted walls-->
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What to do after a flood in your house - 3 important things

  1.  Have a professional inspection- Have a professional inspect your home to ensure it's structurally sound and safe. This inspection needs to include all electronics as well.

  2. Clean up - safely remove all debris, mud and water. Wear suitable protective clothing and gloves. 

  3. Proper ventilation - crucial to helping dry out damaged surfaces. Ensure that affected areas are well-ventilated by opening windows and doors (if weather permits) or use dehumidifiers and fans to help circulate air.

Does your house have a mould problem?

Here’s how to treat mould and some steps you can take to help prevent it from returning.

How to treat and prevent mould-->

How do you fix water-damaged plasterboard?

All flood-damaged plasterboard, insulation, and timber that cannot be saved should be removed and replaced. Clean sound and completely dry surfaces with Selleys Sugar Soap.

Mould may have started to show in the stained area. Treat all affected areas, including those above the water level. You can use Selleys Rapid Mould Killer for this, as mould can be present but not visible before repainting.

Click here to find your nearest Dulux stockist-->
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How to paint over stains on interior walls

Whether you're dealing with existing substrates or installing new paper-faced plasterboard (or exposed GIB® board), the instructions provided will help ensure a successful project. Follow the guidelines to get your intended results!

Prepare walls for repainting - how-to

Treating mould and water damage: what to use and how

Check out these simple solutions that can help combat mould and stains from water damage and flooding.
PRECISION® High Opacity Stain Blocker

What is it used for? Walls with water staining from flood damage to prime and seal walls with water staining from flood damage. You can use it to tackle water stains as well as stains from oil and grease. How to apply? Prime and seal the surface Prepare the walls as above and apply one coat of the stain blocker evenly across the whole wall surface Allow to dry before applying your topcoat

Tell me more-->
PRECISION® Stain & Mould Blocker

What is it used for? For walls heavily affected by mould, we recommend Dulux PRECISION Stain and Mould Blocker instead of 1Step primer. How to apply? Treat and eliminate existing mould - How to: Treat and Prevent Mould Apply one coat of stain and mould blocker evenly to the surface Allow to dry before applying your topcoat

Tell me more-->
1Step® Prep Water Based Primer, Sealer & Undercoat

What is it used for? All general paint surfaces in your home, both inside and out. It provides a superior, long-lasting paint finish by priming, sealing and acting as an undercoat. This stain-blocking primer has mould resistance and prevents tannin and flash rust. How to apply? Prepare walls as above and apply one coat of 1Step® Prep Water Based Primer, Sealer & Undercoat Allow to dry before applying your topcoat

Tell me more-->

Paint to repair water-damaged walls

Once your walls are primed, lightly sand before applying your topcoat; it’s time to start repainting! Here are three products that we recommend using to repair your water-damaged walls.
Paint for interior walls

We recommend - Dulux Wash&Wear® Low Sheen Why use Dulux Wash&Wear® Low Sheen? Superior washability Low odour Low VOC Environmental Choice-approved Dulux Wash&Wear can be tinted to thousands of colours and will keep your walls looking freshly painted for years to come.

Learn more about Dulux Wash&Wear-->
Topcoat for windows, doors and trims

We recommend - Dulux Aquanamel. It can be used indoors and outdoors and tinted to any Dulux colour for a cohesive scheme. Why do we recommend it? A hard-wearing water-based enamel Non-yellowing Hardy against knocks and scrapes. Check out our project guide and video here.

Learn more about Dulux Aquanamel-->
To repair kitchen and bathroom wall water damage

We recommend - Dulux Wash&Wear +PLUS Kitchen&Bathroom. Why do we recommend it? Built specially to withstand humid or damp environments Hard-wearing surface Powerful mould inhibitor and water-repellent properties You can easily wipe away most marks with a wet cloth 10-year guarantee against mould growth* *Refer to product label for full conditions

Learn more about Dulux Wash&Wear +PLUS Kitchen&Bathroom-->

How to paint over stains on exterior walls

Painting your house following flood damage

If you've been affected by flooding, here are some steps to follow to prepare your house for its new paint job.

Painting your house following flood damage-->

Apply for a paint donation

Have you or someone you know been affected by the recent flooding? Apply here for a helping hand with Dulux.

Apply for paint donation
Dulux dog with Wash&Wear, Weathershield and Aquanamel paint tins.
Weathershield® Promise

We guarantee, as long as Weathershield is applied in accordance with instructions for use, it will not PEEL, FLAKE or BLISTER for as long as you live in your home.

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Department of Conservation

Dulux and the Department of Conservation Te Papa Atawhai have been working together since 2013 to protect backcountry DOC huts, historic buildings and other facilities for future generations to enjoy.

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Find a store

Ready to get started? Find your nearest Dulux retailer with our store finder.

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Call us

Our local Customer Service team is available to assist with colour, product and service questions. The Call Centre is open 6 days a week on 0800 800 424 and LiveChat is available 7 days a week.

Live Chat with the experts

Available 6 days a week, start a chat with our team to discuss everything you need to gain colour confidence.

Find a painter

Choose from our wide selection of licensed and insured painters New Zealand-wide to find the right one for your job.

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