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How to prepare water stained and discoloured surfaces before repainting.


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How to Prepare Stained and
Discoloured Surfaces

 

Water
stains

The first step to
covering water stains is to make sure that their source has been
eliminated. Once you are assured that no more damage will occur, begin the
preparation process. 

Clean as much of
the stain as possible from the surface and rinse. 

Allow the surface
to dry and apply a stain-blocking solvent-based or water-based
primer. 

If there is still
evidence of stain-through, apply a second coat. 

Solvent-based
primers or sealers are the most effective in stopping stubborn
stain-through problems, but require plenty of ventilation and an
appropriate respirator. 

Once the primer
or sealer has thoroughly dried, apply the finish coat.

 

Tobacco,
fire damage, soot, grease

Clean the stained
area as much as possible with a detergent and rinse thoroughly. 

Allow the surface
to dry and apply a stain-blocking solvent-based or water-based primer or
sealer. 

If there is still
evidence of stain-through, apply a second coat. 

Solvent-based
primers or sealers are the most effective in stopping stubborn
stain-through problems, but require plenty of ventilation and an
appropriate respirator. 

Once the primer
has thoroughly dried, apply the finish coat. 

In the case of
fire damage, solvent-based primers or sealers provide the best combination
of stain hiding and minimising odour.

TIP

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