Rust-Oleum Mathys Dac Hydro D

We no longer stock this product, but can recommend Rust-Oleum Mathys Dac Hydro Plus as a great alternative.

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This Product has been Discontinued


We no longer stock this product, but can recommend Rust-Oleum Mathys Dac Hydro Plus as a great alternative.

Rust-Oleum Mathys Dac Hydro D is a high build, waterborne acrylic pitched roof coating that renovates and protects in a durable way concrete and terracotta roof tiles. It provides excellent resistance against weathering and a particularly aesthetic and durable decorative finish which breathes, is flexible and adheres to most mineral substrates.

Features & Benefits

  • Higher layer thickness gives extra protection
  • Resistant to UV radiation, acid rain, heat, frost and pollution
  • Rain-proof after just 1 hour
  • Smooth decorative finish with lasting colour and gloss
  • Safe and easy to use

Surface Preparation

After a good cleaning with pure water under high pressure (200 bars), all substrates have to be dry, clean, not chalking and normally absorbent (untreated roof tiles). For very closed substrates like varnished or enamelled tiles, an adhesion coat of Rust-Oleum Mathys Noxyde diluted with 25% water should be applied. For all other substrates: corrugated asbestos cement sheets, concrete tiles of the Redland type and all weathered and/or very absorbent substrates, it is necessary to apply an adhesion coat of Rust-Oleum Mathys Primer 44 HS. It is recommended to perform an adhesion test prior to use and it is not advisable to apply Rust-Oleum Mathys Dac Hydro D on artificial slates type “Eternit”.

Directions for Use

To ensure homogeneity, coating materials should be thoroughly stirred prior to use.

Application & Thinning

  • Brush: Apply undiluted
  • Roller: Apply undiluted
  • Air-atomised spray: Not recommended
  • Airless spray: Dilute with max. 3% of water. Nozzle: 015 - 021 / Pressure: 160 - 220 bars
  • Cleanup: Water

Application Conditions

Temperature of air, substrate and coating material must be above 8°C and relative humidity below 80%. The substrate temperature must be at least 3°C above dew point.


Apply in 2 coats to avoid local gloss differences.

Please contact Rawlins Paints' Technical Support Team on 0113 2455450 for more information.

Product Details

Data sheet

Base Type
Water Based
Brush, Roller, Spray
Dry to Handle (at 20°C)
2 Hours
Dry to Recoat (at 20°C)
24 Hours
Fully Cured (at 20°C)
1 Week
6m² per litre
Min. Application Temperature
Solids by Volume
40 %
40 g/l
Shelf Life (from date of manufacture)
2 years from date of production in unopened cans, if stored in dry, well ventilated areas, not in direct sunlight at temperatures between 5° and 35°C.
Touch Dry
1 Hour
Recommended Dry Film Thickness
65 µm
Recommended Wet Film Thickness
170 µm
UN Number
Not regulated

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions Gareth on 2019-04-30 15:59:24

Hi, I have a slate roof. Can this paint be used?? Many thanks Gareth

Answer from Rawlins’ Technical Team: 

Rust-Oleum Mathys Dac Hydro D is suitable for concrete and terracotta roof tiles. For slate tiles we would recommend Rust-Oleum Mathys Dac Hydro Plus once the surface has been primed with either Rust-Oleum Mathys Primer 44 HS or Mathys Pegafix.

Question about the product

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Rust-Oleum Mathys Dac Hydro D is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT

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