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ROOF SEALER 'Breathable' Dry Finish - Protects Concrete Tiles & Slates 10 yr+
Sample Available
Product Reviews
By Paul Wharton

Excellent good quality roof sealer and excellent good fast delivery service will use again


The roof tile sealer is an excellent product, good service

By Nicolas Clough

Excellent sealer, dispatched promptly and arrived overnight. Easy to apply, and best of all, does what it is supposed to do. We now have the best looking roof in the area.

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ROOF SEALER 'Breathable' Dry Finish - Protects Concrete Tiles & Slates 10 yr+

(Sample 100ml, 5, 25L & Bundles) Highly Protective, Impregnating & Breathable Protects from MOSS, ALGAE & WATER 10yr+. Clear Protective Impregnating Roof Sealer for Concrete, Slate and Clay Roof Tiles. Safe & Easy to Apply

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Product Description

Clear Roof Sealer

Smartseal roof sealer creates a water repellent barrier and protects against re-growth of moss and algae.

The roof tile sealer is a high quality, clear, solvent free acrylic impregnating roof sealer for concrete, clay or slate tile roofs. Once applied, the roof sealer will alter the chemical structure of any roof tile and provide an excellent water repellent surface. The clear roof sealer will also greatly restrict the growth of algae, lichen and moss to the surface of the tile.

Roof Tile Sealer features:

  • Suitable for slate, clay tiles and concrete tiles
  • 1 x 25 litre will treat up to 125 m2 on concrete roof tiles & 200-250 m2 on clay & slate roof tiles 
  • Highly resistant to water, staining and organic growth
  • Will not change appearance of roof tile
  • One-coat to saturation (with 2nd lighter coat)
  • Average coverage 5 m per litre
  • Application by sprayer or brush
  • Touch dry 2-3 hours
  • Fully waterproof 24 hours
  • Lifespan up to 10 years
  • Solvent free impregnating sealer


  • Before application of roof sealer make sure tiles or slates are totally clean, dry and free from moss or algae spores.
  • Unless applied to a new roof, pressure washing and application of suitable biocide is essential.

APPLICATION: Apply roof sealer by hand held sprayer or brush, apply to saturation, it is recommended that after around 20 - 30 minutes a light second 'wet on wet' coat is applied. Not to be applied if there's a threat of rain or temperatures below 12C.  Apply to test area first, mix container before use.

Clean equipment with water immediately after use.

SHELF LIFE: Use as soon as possible after opening. Store away from sun and sources of heat. Avoid frost and low temperatures.
Can be stored for 12 months (in original sealed container).

Product FAQs

Q: I have power washed the roof and biocided. Do you have a sealer I can apply with my pressure washer via a bucket? Can reach areas with telescopic lance or have to rent a roof ladder again which I would like to avoid if possible

Ritchie Doyle

A: The roof sealer can only be applied by airless paint sprayer, hand held pump sprayer or brush. The resins in the sealer will very likely break the pressure washer. We are a product supplier and do not rent out application tools. sorry. Hope that helps.

Response from George.

Q: Is the sealant ok to use with wood windows/fascia? Would it affect paintwork if some went onto the wood finishes when treating the roof?


A: The roof sealer will not adversly affect wood or glass, or UPVS fascia. Any overspray can be wiped away with a cloth or dry sponge. Hope that helps.

Response from Nigel

Q: Is the Roof Tile Sealant (clear) the same thing as the Roof Coating (coloured)?


A: No they are totally different products. The clear roof tile sealer will not change the appearance of roof tiles once applied. The roof coatings are availble in a number of colours and will alter the colour and appearance of the original roof tile after application.

Response from Nick
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