Di-ArdSurface biocide and wood preservative

Buy Di-Ard

What is Di-Ard?

How it works

Simply dilute Di-Ard moss remover with water and spray or wash over the affected area. No rinsing, scrubbing or power washing is required - just leave the product to work its magic. Di-Ard is bio-degradable and non bio-accumulating. When dried the surface is safe for animals, pets and children. Di-Ard is also safe to use on treated surfaces for moss removal and has no staining properties.

Where to use

Di-Ard can be used on external hard surfaces for moss removal and much more. Because it contains no abrasive properties it can be used on delicate surfaces which power washing may damage.  Use Di-Ard moss remover to treat: roofs, walls, patios, driveways, tennis courts, car parks, greenhouses/conservatories, thatch, metal caravans and boats. Contact us and we will quickly advise you on other applications.


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
25 Litres of Di-Ard
25:250 dilution covers 1250 sq meters
25:500 dilution covers 2500 sq meters

Di-ard is cost effective and costs from as little as 16p per square meter.

Non-professional enquiries

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 by making it available in 1 and 5 litre bottles. Use as directed & in the correct conditions Di-Ard is a perfect moss removal product and keeps surfaces clear of re-growth from approximately six to 12 months depending on weather and wind conditions.



At Goole Tennis Centre, we have used Di-Ard successfully over the past few years to prevent moss and algae developing on our tennis courts. Di-Ard is fast to work and ensures our courts are moss and algae free year round making the playing surfaces safe for our members.

Tim Pattle, Centre Manager

I have used DiArd in many situations from driveway and patio, wooden furniture and the coping stones on our driveway wall - in every situation it has delivered a very good job. It does more than what is says on the can. Thank you.

Iain Barker