How much does 5 litres cover and plus to you dilute this

Product is always used neat, coverage will vary as per porosity of tile or slate. The average coverage on a concrete tile would be 4-5 m2 per litre. Hope that helps!

Can i use this on my new roof thats only just been installed?

No problem but ensure the roof is dry. Dave.

Hi,will the appearance of 20yo shabby looking co crete tiles. Improve so the roof looks new?

This type of sealer provides a 'dry' 'invisible' appearance so it will not change the appearance of the tiles. We do supply a complete range of coloured roof coatings, these would create a 'like new' appearance. This could be more the type of product you are looking for. Hope that helps.

does this product damage plants ? our bay window roof overhangs our front garden

Hi, I would not be sure it is safe for plants, but would always cover with dust sheet, plastic sheet or old bed sheets whilst applying. It's a good product so would recommend it sealing slates etc, albeit it's your decision about the plants. You could also gently hose pipe/sprinkle water over the plants once completed and covers removed. That could wash off any drips or over spray missed by the covers if done immediately after. Sorry for not having the 100% definitive answer.

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SmartSeal Roof Tile Sealer - 25L - Breathable Clear Roof Sealer. Solvent-Free Clear Sealant that Helps Prevent Moss, Mould, Algae & Lichen Growth on Concrete, Slate & Clay Tiles

Product ID: 206197847

Details

Brand
SmartSeal
Item weight
25 Kilograms
Material
Acrylic
Style
25L
Water resistance level
Waterproof

🌿Prevents moss & algae growth

🖌️Clear, invisible finish

🛡️10-year waterproof barrier

$856.31

Duties & taxes included

In stock

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Description

🛠️ Protect your roof, impress your neighbors—seal the deal with SmartSeal!

DECADE LONG DEFENSE - Enjoy up to 10 years of waterproof, weatherproof performance with one application.
EFFORTLESS APPLICATION - Spray or brush on, touch dry in 2-3 hours, and fully waterproof within 24 hours.
COVERS MORE SAVES MORE - 25L seals up to 250m² on slate & clay tiles—perfect for large projects or future-proofing.
MOSS ALGAE NOT HERE - Stops unsightly organic growth to maintain a pristine, professional roof appearance.
INVISIBLE SHIELD FOR YOUR ROOF - Clear sealant keeps tiles looking natural while providing unbeatable protection.

SmartSeal Roof Tile Sealer is a solvent-free, clear acrylic sealant designed for concrete, slate, and clay tiles. It creates an invisible, breathable waterproof barrier that prevents moss, mould, algae, and lichen growth, extending roof lifespan by up to 10 years. Easy to apply by spray or brush, it covers up to 250m² per 25L and dries quickly, making it the professional choice for long-lasting roof protection.

Specifications

ASIN	B07VL5NVX3
Best Sellers Rank	70,662 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,010 in Sealers
Brand	SmartSeal
Colour	Clear
Compatible Material	Concrete, Clay, Slate
Customer Reviews	4.2 4.2 out of 5 stars (76)
EU Spare Part Availability Duration	10 Years
Included Components	Product Only
Item Form	Liquid
Item Weight	25 Kilograms
Manufacturer	Smartseal UK Ltd
Manufacturer Part Number	Sm-rooftilsea-25
Material	Acrylic
Number of Items	1
Style Name	25L
Surface Recommendation	Roof,Tile
Unit Count	25000.0 millilitre
Water Resistance Level	Waterproof

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