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 - 2 x 5L - Breathable Clear Roof Sealer. Solvent-Free Clear Sealant that Helps Prevent Moss, Mould, Algae & Lichen Growth on Concrete, Slate & Clay Tiles

SmartSeal Roof Tile Sealer - 2 x 5L - Breathable Clear Roof Sealer. Solvent-Free Clear Sealant that Helps Prevent Moss, Mould, Algae & Lichen Growth on Concrete, Slate & Clay Tiles

Product ID: 408239681

Details

Brand
SmartSeal
Item form
Liquid
Material
Acrylic
Style
2 x 5 Litre
Water resistance level
Waterproof

💧Waterproof up to 10 years

📏Covers up to 250m² per 25L

🛡️Solvent-free & eco-friendly

Description

🛡️ Seal Smart, Stay Ahead: Protect Your Roof Like a Pro!

ECO SMART SAFE - Solvent-free acrylic formula means powerful protection without harsh chemicals—good for your home and the planet.
DECADE LONG DEFENSE - Enjoy up to 10 years of protection against moss, mould, algae, and lichen—maintenance made effortless.
DIY FRIENDLY APPLICATION - Spray or brush on easily, dries touch-ready in 2-3 hours, and fully waterproof in 24—perfect for busy pros and weekend warriors.
PRO COVERAGE PRO RESULTS - Generous coverage up to 250m² per 25L lets you tackle any roof size with confidence and ease.
INVISIBLE SHIELD VISIBLE IMPACT - Clear sealant keeps your roof’s natural look flawless while locking out water and grime.

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 up to 10 years. Easy to apply by spray or brush, it covers up to 250m² per 25L and dries touch-ready in 2-3 hours, making roof maintenance effortless and cost-effective.

Specifications

ASIN	B09RX1RMPJ
Best Sellers Rank	101,480 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,263 in Sealers
Brand	SmartSeal
Colour	colorless
Compatible Material	Concrete, Clay, Slate
Customer Reviews	4.2 out of 5 stars 73 Reviews
Included Components	Product Only
Item Form	Liquid
Item Weight	10 Kilograms
Item form	Liquid
Item weight	10 Kilograms
Manufacturer	Smartseal UK Ltd
Manufacturer Part Number	Sm-rooftilsea-2X5
Material	Acrylic
Number of Items	1
Style	2 x 5L
Style Name	2 x 5L
Surface Recommendation	Roof, Tile
Unit Count	10000.0 millilitre
Water Resistance Level	Waterproof
Water resistance level	Waterproof

Reviews

J**D

Smart seal roof sealer

Make sure you order more than you think you need. Easy to apply using garden sprayer. I used spear and Jackson 5 litre with extra long lance. Only just applied so have to wait to see how effective it is.

22.09.2025

W**K

Looks like a good quality product!

Delivered very quickly, great seller!, yet to use, but product looks like it’s good quality. Thanks

5.01.2026

M**S

Fits well

Fits well in my van, not long term tested yet

30.08.2025

A**R

Tile seal

This product was very good and we didn't need as much as order it was very easier to use and very good dose the job

30.05.2023

M**T

This does what it says on the bottle

This product is easy and quick to use

9.04.2023

E**N

Easy to use

Use to make my bid bath wterp put 3 coats on with plenty of drying time in between but didn't OK nd there was only hairline cack in dsh! Glad I l got a sample ot!

21.08.2023

J**.

It a good product

Does exactly what it says it will do.

18.10.2024

H**K

Perfectv

Perfect

25.07.2025

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