Payment Methods Accepted
Buy with confidence

Natural Stone Sealer 'DRY' Finish - High Quality, Impregnating, Durable Sealer for Sandstone, Limestone, Slate, Granite & more

inc VAT
StarStarStarStarStar 42 Reviews|(5/5)
Please select a size
In Stock In Stock
Sample Available Natural Stone Sealer 'DRY' Finish - High Quality, Impregnating, Durable Sealer for Sandstone, Limestone, Slate, Granite & more
Quick Tips & Advice

Customer Reviews

I rang Smartseal, having previously carried our some research, for advice on impregnating my Cotswold stone patio. I spoke to Dawn Leahy who was incredibly knowledgeable and explained how the product “Natural Stone Sealer” worked. She was extremely helpful and cheerful and gave me all the assurances I needed which led to me buying the product. I received 5* treatment.Thank you Dawn. Delivery of the product was incredible as I received four separate emails at each stage of the delivery process. In due course I will use the product and have every confidence that it will be every bit as good as the claim. Thank You Dawn and SmartSeal John

By john Coupe From Taunton

Good product, easy to apply

By Susan Lloyd

I have never used any product like this previously. Having had 60 sq metres of Indian stone patio laid I was advised to seal it. I looked at many products some more expensive than this one. The result is perfect and unless it rains on it you would not know it wasn’t the bare stone. Rainwater does clear quickly. No horrible smells and easy to wash off brush or roller. Very pleased.

By Susan Lucas

Easy to apply with a hand pump sprayer - does exactly what it’s supposed to do. No difference to the colour of the sandstone. Highly recommend

By Michelle B From Darlington

As always “does what it says on the tin” Customer was very happy with the end result

By Jason Howard From Clean-Away

The sealer was easy to apply and I had enough to give two coats. I used a paint roller on my patio and it was done in no time. Would definitely use again.

By Madelaine Clarke

Great product, does exactly what it supposed to. Easy to apply, didn't darken the stonework and coverage was better than I thought it would be. Fast and efficient seller. Highly recommend!

By Patrick Larkin

Used this sealer on Indian sandstone patio easy to apply does not change the look of the stone which was something I was concerned with.

By Sarah C

Easy to apply and dries very quickly with no impact on the stone colour. Water sits on the surface after one coat

By Nicola Peers

I used this product 12 months ago on the lower indian sandstone patio in my garden and it proved to be excellent. I used the sealer on my upper indian sandstone patio, which takes more punishment, and it has gone on just fine. I fully expect the sealer to do it;s job once again. Excellent product..


Good firm to deal with. Sprayed 35L over large patio still needed another 10L, so very expensive for a large area. Too early to say how well it works but all other products used have been very good

By Donald Johnston

We have now tried 6 sealants and have ordered 2 x 5ltr of this product as it leaves the sandstone paving clear. You would not notice its sealed. Ticks all the boxes

By Max Levy From Portsmouth

Seems really good, Easy to apply and the finish is as described and appears to work well. I can recomend,

By Philip Sanderson

Great service and the product seems to have sealed our 200 year old stone fireplace. Thanks

By Colin Boothman

It's difficult to review as I need time to see how it is but what I can say at present is that it was delivered very quickly and the roller I purchased at the same time seems to be the best applicator for my terracotta tiled floor both inside and outside the house. Coverage seems good I think I'll end up using 50litres to cover approximately 300 sq metres

By Christopher Harvey

The natural stone sealer is a first class product and very easily applied by a brush to the work surface. I am very pleased with the finish and to date the damp related problem Has not reappeared. I would definitely recommend this product and other Smart Seal products to all the various people I know.

By ROBERT Hayward

Very easy to use and easier to apply than acrylic based sealers,looks totally natural and brings out subtle colours of stones,but remains to be seen if it is effective as it is so natural

By Peter Johnson

I used this product on granite it was very easy to apply and never altered the colour.

By Carole McDermott

A very 'dry' finish, really no visible trace of the product after two coats with a sprayer on our stone. The recommended quantity for the area seems dead right. Very clean and easy to use with no smell. Can't really give five stars until we have seen what it looks like after winter, so four for now.

By Suzan Maric

Great finish & easy application

By Glen Baily

Ordered 50L as I had a roughly 60 Sq meters patio & paving area to cover. Easy to apply (2 coats as directed) and it dried leaving patio and path looking as it did before application (Indian sandstone). I did not skimp on applying and had roughly half a 25L tub left after completing (I will use this to top up over time). Rain this summer has been in short supply but when we did have a little the sealer did exactly what it was meant to do. I have hosed off some spills and as sealer did its job have been left with no visible staining. Cannot fault product or service from Smartseal. Many Thanks

By Mark Slawson From Aylesbury

Easy to apply. Brilliant finish

By Karl Cordwell

2 coats of sealer, keeps the water off. Looks exactly like the original slab, totally dry. Decided on reflection a slight sheen is preferential so went with another product but this does what it should. Tester sample is a bit stingy though....

By Matt Lawrence

Prompt delivery.Reasonable price for a sample size.

By Sharon Woodhead

Easy to Apply,water beads on surface.You have to apply second coat when first one is still wet and I couldn't find any instructions saying you could stand on the first coat when it was wet,as it happens I did and it didn't seem to make a difference.

By David Andrews

absolutely fantastic, my customer was extremely happy with the results, AAA+++

By Mark Garside From stoke on trent

Very quick delivery. Easy to apply the stone sealer with a roller and no residue. Not rained since applied yesterday 3rd July 2016 so cannot comment on how effective it is long term.

By Paul Woodworth From Liverpool

This Natural Stone Sealer was recommended by professional landscaper. Very easy to apply, hope it does the job

By Kenneth From Hampshire

Very satisfied with this sealer applied with a roller. It rained two days after and you could see how well it worked.

By Terry From South Yorkshire

At last, a reliably dry week to use Smartseal Dry on my Indian stone patio. I jetwashed it and left it for two days to make sure all the joints were dry. I then vacuumed it and applied the seal with a rough surface roller. It was so easy and dried with no surface residue. It has now rained and the result is remarkable. 5 stars for product and 5 stars for service.

By John Hodgkin From hodgkin37@gmail.com

Used natural stone sealer on patio.Easy to apply using a sprayer,very effective after one coat but applied second just to make sure.Delivery prompt.

By alistair From Hampshire

I've been waiting for it to rain before I could write my review and now it has I can say that I am totally pleased with this product. It was so easy to apply - on uneven slabs with the roller. The finished product looked lovely then when it rained the rain went into small globules. Obviously the real test will be what the slabs look like in a couple of years time but so far so good.

By Jenny Churchhouse From Wokingham

I ordered a small sample originally which came quickly and proved the product worked on my sandstone terrace. I have since used 35 litres of the dry finish product with excellent results. The water stands on the stones and dries off quickly without leaving discoloured areas. It hits the spot for me perfectly. Speedy delivery of 3 orders so far.

By Franklin From London

Your product was excellent,and the delivery times were very quick.I decided to get a sample first as I had tried other products on small areas and had to go through the hassle of returning the products which I had already opened.I had spent £4000 on my patio and was not happy with the results the other sealers had given me.I bought 5 litres of natural sandstone sealant and it easily covered my patio of 25 sq metres.I choose the DRY finish as I wanted to keep the original appearance.It was so easy to apply the sealant which just looked like milk.I also liked the fact that it was water based and the brushes etc. were easy to clean.The hardest part in Scotland is waiting for a dry day to do the job,which only took a couple of hours.I would certainly give this product 5 out of 5

By Gerry Davies From Paisley,Scotland

I recently had a new Indian sands tone patio and pathway constructed, that is around 60 square metres. I did some research and ordered 10 litres of the natural stone ultra sealer, and the delivery was quick. The price was good compared to some other products on the market. Waited for the appropriate time after cleaning the sandstone to ensure there would be no rain. Very easy to apply, using a roller with a long handle and a paint brush for the edges. I needed around 8 litres to complete the whole area. Once it was dry I could see that the look of the sandstone had not altered after applying the sealer, which is what I was after. It rained a few days later, and I could clearly see the sealer was doing its job. There were beads of water on the sand stone. I would highly recommend the sealer.

By Arvind From London

I purchased this for our recently lain Indian Sandstone patio after trawling the internet for a while. Delivery was very quick but weather not so accommodating!! None the less, 3 weeks later I have managed to dinf a brief window of opportunity and found the sealant very easy to apply using a roller on extended pole, thus saving my back! We went for the matt finish as the wetlook seemed to "in your face" for us. Then waited with bated breath to see what would happen when it rainded and sure enough, it did about 30 hours after it had been applied. Fantastic result water formed into droplets and run off where the patio sloped and dried up really quickly. A very happy customer here!

By Simeon H From Chichester

Very good service, so far its looking good, but its only been done for a week.

By Julie From London

I used the natural stone ultra sealer dry finish on my indian ivory stone portico at the entrance .It was very easy to apply with a small brush. it has not changed the lovely appearance of the stone and so far so good, the water beads up .hopefully will be stain resistant .telephone advice was very good. prompt delivery within 2 days of ordering.

By mumtaz lakha From northampton

I ordered this on Monday morning and it arrived on Tuesday morning - brilliant service! Tuesday was clearing and cleaning day, and a warm, nearly windless August Wednesday gave perfect conditions for application, which was very easy. I used a roller with a sheepskin covering which got into the crevices on the irregular finish very well. Rain tested it overnight and the surface shed the water as expected. Like others, I found I used a lot less than expected. I have used only a small amount of the second 5 litre container for a 50 sq m patio - could proboably have got away with the 1 litre size here, though I would not have wanted to risk it. The only slight problem I had was that as the stone dried quickly to the original colour I needed to put markers on the paving stones that I hadn't yet done (I used stones), though the water does roll off if you have done them.

By Susan Pluthero From Ashford

Telephone support quick and helpful. Easy to apply and appearance completely unaffected. Sheds water - just need to see that it continues to do so but so far so good.

By Roger From Usk

Used this on crumbly sandtsone. Did a great job with natural results. No artificial shine and well sealed. 5 stars

By Margaret From

I used the natural stone Ultra sealer on concrete patio slabs on recommendation of the technical sales assistant even though it does not recommend this product for this application on the website. The reason was due to being water based and easier to apply, and being less affected by damp during curing in the wetter months. I actually tried three sample pots, the wet and dry look Ultra and the website recommended acrylic patio sealer. I disliked the acrylic sealer as it was high odour. difficult/impossible to clean brushes and left the patio glistening in the sun too much. The family preferred the dry look ultra so I bought 25 litres to tackle my large patio. Actually I only needed 15 litres but a 25 litre container is not much more than 3x5 litre containers. The product seems expensive but on a total job basis is probably worth it. If you consider the time and effort in cleaning the patio and re-grouting the joints (weeks in my case) then spending a little more on a single application sealer does not seem bad. Application is a doddle. After all the previous mentioned cleaning and repair I brushed and vacuumed the patio clean, and the product just paints on like 'milk'. I used a roller and handle that I would use for emulsioning ceilings, with a large brush for the edges. After a month or so, the patio looks good and clean (not wet looking) and when it does rain the water beads up on the surface like on a raincoat.

By Alan From Bucks
Read more reviews

Leave A Review

Product Rating  *  *  *  *  *

*All submissions will be checked by our administration team before appearing on the site. Please be patient as we will try and approve your comments as quickly as possible.


Step-by-Step Video Guide

Natural Stone Sealer with a 'DRY' Invisible Finish

Effective impregnating sealer for sandstone, limestone, granite and slate

Smartseal Indian Sandstone Sealer and Natural Stone Sealer is a high quality, clear, solvent free acrylic impregnating coating system. Application of the sealer will alter the chemical structure of the porous sandstone or natural stone providing a excellent water repellent and stain resistant surface.

  • One coat application to saturation (for best results apply 2nd coat 'wet on wet')
  • 1 x 25 litre will treat 100 - 125 m² on average
  • Resistant to algae, lichen and staining
  • Dry finish
  • Average coverage 4 - 6 m² per litre
  • Application by roller or sprayer
  • Touch dry 2-3 hours
  • Fully waterproof 24 hours
  • Lifespan of up to 5 years can be expected
  • Suitable for Sandstone, Limestone, Terracotta, Travertine, Slate and Granite
  • Can be used externally or internally


PREPARATION: Prior to application of sandstone sealer or natural stone sealer ensure surfaces to be sealed is clean, dry and free from contamination. If algae or stains are present pre treat prior to cleaning with a appropriate cleaning product.

**If applied to a surface where a "sweep-in" pointing compound has been used with the last 6 months, the natural stone must be fully cleaned with Smartseal Residue Remover prior to sealant application.**

APPLICATION: A suitable pressure sprayer or roller is recommended taking care to
avoid any pooling. If over application does occur, excess sealer can be removed with a dry roller or sponge. Ensure this is done within 45 minutes. Application on vertical surfaces should be to full
saturation commencing at the bottom and working upwards. 

Applying one coat to saturation is normally sufficient. Do not apply in damp conditions and only apply in minimum temperatures of 12- 15°C. Shake container well before use.

All equipment should be cleaned with water immediately after use.

SHELF LIFE: Store away from direct sunlight and sources of heat. Protect from frost.
12 months (in original sealed container).