Control Home Condensation

Stop Home Mold Growth

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Where you can speak to real mouldy people

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Black Spot Mould Specialists - mold treatments and condensation advice

How to stop Black Mold Growth in the home.

1. Apply Surface Cleanser to the wall with a sponge - allow to dry

2. Apply one or two coats of Stain and Damp Primer, to prevent show through of residual stain markings.

3. Add the AntiMould Paint Additive to your chosen paint and apply as usual

4. Use a Condensation Monitor called a Home Humidity Meter to measure the moisture in the air in your house. Keep the moisture reading between 55% and 65% to avoid Condensation. Ask us for help in using this simple tool to keep your decorations and health in good order.

Really bad black mould - staining wallpaper.More Black Mold, with some salts coming through the wall.

Severe Black Mould - it only growths in the pure water condensing from the air.

Light mold in a corner and on the skirting boardsMold free patches indicate temperature changes or salts

Less severe Black Mould - patterns of mould indicate the surface temperature differences.

How to stop Condensation in the home

1. Buy a Dehumidifier - they have the running costs of a Fridge and as well as removing moisture they provide some background warmth.

2. Fit Trickle Vents to your Double Glazed window frames.

3. Or for Houses, consider a Loft Mounted Fan, known as a Positive Pressure ventilation system

4. Or for Flats, consider a Heat Recovery Fan, which has a ceramic heat exchanger, to minimise energy loss.

4. Then use a Home Condensation Monitor to measure the moisture in the air in your house. Keep the moisture reading between 55% and 65% to avoid Condensation. Ask us for help in using this simple tool to keep your decorations and health in good order.

Home humidity meter gives temperature and relative humidity.

Mould markings in the corner of a room.Variable mold in a corner - look outside for faults.

Black mould is often associated with cold corners

Complete Anti Mould Kit available -

1 x Surface Cleanser (makes 5 litres)

2 x Paint Additives (enough for 5 litres of paint)

or buy the products separately.

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Data Sheet for Surface Cleanser - click here

Data Sheet for AntiMould Paint Additive - click here

How to test for condensation

Test the walls of the building with our Condensation Test Kit and look for evidence of mold - usually 'black spot' - this indicates that you have Condensation forming on the coldest surfaces in the room. Unless you can increase ventilation and heating, consider using our Anti-Mold Paint Additive or Anti-Mould Emulsion Paint - guaranteed for 5 years!

If necessary, treat all plaster with the anti-mold treatment supplied with the paint and then redecorate.

Measure the amount of Moisture in the Air

Use our Hygrometer to monitor the conditions in each affected room and use the Memory function to check the exact conditions overnight, the time when temperature falls and condensation is most likely. This meter helps you to control the conditions that cause condensation and to monitor the use of your heating, ventilation and dehumidification.

Large display version

Large readout on our Jumbo Home Humidity Meter

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How to test damp walls and timbers

Condensation forms on the coldest parts of your walls, floors and ceilings. If damp is entering from the outside or from a water leak it will make the damp areas colder and more prone to condensation, hence mould growth.

Firstly, check the outside of the building for rainwater penetration - if the walls are absorbing moisture apply a water repellent - Dampseal - check your downpipes and gutters.

Click here to see the Data Sheet for the Damp Testing Meter

Damp testing meter - click to buy

A sturdy conductivity type meter with pins, ideal for testing masonry (brick, stone, plaster) and timber (skirting boards, floors) to give an indication of 'relative' dampness. Always use Meters to compare like materials, never to give absolute moisture readings.

Benefits are as follows;

  1. Pocket sized
  2. As used by the 'professionals'
  3. Battery powered
  4. Direct visual reading

Damp Meter - Conductivity Type with two pins.

Can also be used to test damp floors and new concrete floors.

(We also sell the Protimeter Range of products, including the Surveymaster. These are Professional instruments, starting at over £100 plus VAT for the basic model.)

Summary of mold or mould facts

Mould growth is caused by Condensation forming on the surface or inside the building material

Condensation is caused by high levels of moisture in the air condensing on the coldest surfaces in the room, often at night when the temperature falls

Surfaces will be colder if they are damp - rising and penetrating dampness, blocked wall cavities or lack of them, can all increase dampness

Dampness can be caused by common defects, like blocked gutters overflowing, poor pointing, cracked external render.

Testing wood using a Damp Meter.

Testing wood for moisture content - at over 18-20% wood can begin to rot

For immediate help (in office hours) ring our dedicated team of Experts

David, Angela or Kathy will help to diagnose your dampness problem FREE.

Ring them on 01626 872886 or use our special MOULD CHECKLIST by clicking here.


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Site written by: David Moore

David Moore, B.A. (Hons.), C.T.I.S., C.R.D.S. Technical Author


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