Black Spot Remover Plus

Apply Black Spot Remover neat and allow to dwell for at least an hour – extend the dwell time if required. Repeat the process if required.

A build-up that has taken 10 years to form will be more difficult to remove than a single years growth!

Please read our blog article about removing black spot from sandstone patios; click here.

The black spot remover may take an hour to work. It could be less if the contamination is light. Organic matter will be eliminated before the black spot, so any patio green algae and moss will be destroyed during the process.

Extend the dwell time if required – a severe infestation may mean extending the dwell time to beyond an hour.

Approximately 20m2 from a 5 litre container. The product can also be bought in a larger economic 20 litre container which can cover up to 80m2.

They are incredibly stubborn lichens, they are impossible to remove by jet washing. To get rid of these back spots on your patio, you need to ‘kill’ the living lichen first before washing away.

Add more product so the surface is visibly wet, do not allow the product to dry on the surface. Agitate with a brush to move the solution over the high areas of the stone. This will also to stop the fluid from simply sitting in the low areas of the paving.

Dwell time is very important – Extend the dwell if the contamination is really severe, keep the product/surface wet and agitate periodically.

A single long dwell time is more effective than repeating the process on multiple occasions with shorter dwell times.

You have not carried out a test patch! By using a test patch you have the information to remove the black spot.

• You may have exceeded the coverage rate of no more than 20m2 per 5 litre container.
• Keep the surface wet, the product is to be applied so the surface is visibly wet.
• You will know when the product is working as black spot often starts to turn grey or white.
• Dwell time is critical – extend up to 4 hours if required.
• Do not let the product dry out.
• Repeat the process for very heavy build ups.

When wetting out the area to be treated you should also wet out the surrounding bedding plants and lawns. The product will be diluted if it encounters these areas and loses its strength.

The way to neutralise black spot remover is to add lots of clean water to dilute it. The product has no residual effect when dry. It is a contact product and will not continue to work once dry.

Yes, click the link below to have a look at a blog article about the removal of black spot – and feel free to contact us directly.

Removing black spot lichens from patios & pavers.

Floorseal Indian Sandstone Sealer & Colour Intensifier is a breathable, natural, & matt finish sealer that slightly enhances colour. This product is ideal for any colourful sandstone like mint fossil, raj green, rainbow sandstone or Yorkshire sandstone flags.

Or

Floorseal Natural Stone Sealer Breathe, this sealer also retains a natural matt finish but does not alter the colour of the stone in any way. This product is ideal for plain grey sandstones like Kandla Grey.

Apply Floorseal Green Remover Concentrate a few times per year to kill green algae & prevent the return of black spot lichen.