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Thank you for your interest in Gro-Well. Unfortunately due to staff issues, supplier shut downs, lack of stock and a massive reduction in delivery options we have had to make the difficult decision to temporarily shut down our website. This will remain the until the current situation ends and stock becomes available again.

Any orders already placed will be processes as quickly as stock becomes available and delivery partners can deliver.

Ovara Di-Ard

Ovara Di-Ard

Ovara DI-ARD 

Di-Ard is a biodegradable quaternary ammonium compound (9.2% dialkyldimethyl ammonium chloride) - this basically means it is a water based concentrate which is used to kill algae, mosses, lichen, wood rotting fungi and moulds on external hard surfaces. It can also be used as a wood preservative.

How does it work?

Di-Ard is simply diluted with the recommended rate of water and sprayed or washed over the affected area.

No rinsing, scrubbing or powerwashing is required - just leave the product to work its magic.

Di-Ard is readily bio-degradable and non bio-accumulating. Once the treated area has dried the surface is safe for animals, pets and children. Di-Ard is also safe to treated surfaces and has NO staining properties.

Where can it be used?

Di-Ard can be used on external hard surfaces and because it contains no abrasive properties in can be used on delicate surfaces that powerwashing may damage.

Di-Ard can be used to treat:

  • roofs
  • walls
  • patios
  • driveways
  • tennis courts
  • car parks
  • greenhouses/conservatories
  • thatch
  • metal
  • caravans
  • boats


Di-Ard is sold as a concentrate and can be diluted to your own requirements.

For example

1 Litre of Di-Ard

  • 1:10 dilution covers 50 sq meters
  • 1:20 dilution covers 100 sq meters

5 Litres of Di-Ard

  • 5:50 dilution covers 250 sq meters
  • 5:100 dilution covers 500 sq meters

Non-professional Use

We are pleased that the Health & Safety Executive has given permission for non-professional (general public/amateur) users to benefit from the high concentrate of Di-Ard.

*Used as directed & in the correct conditions Di-Ard keeps surfaces clear of re-growth from approximately six to 12 months depending on weather and wind conditions.


 5ltr Single


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