Sealing Natural Stone

Posted On 31/10/2019
Sealing natural stone is one of those things that your advised to do all the time.

And you sometimes question whether it’s actually required on your particular stone product.

Is it actually needed on a granite or sandstone patio? Is it needed on a stone wall that I’ve just built? Is it needed on these limestone floor tiles that I’ve just laid in the kitchen?

Well I thought i’d write a quick blog post about sealing your natural stone, hopefully answer some of your queries and outline the best sealer to use in our opinion.

sealing natural stone by everything stone One of the first questions we’re asked when we discuss sealing is, ‘why do i need to seal’? And in short, there are quite a few reasons depending on the product that your installing.

So if your take a granite patio for instance, then you need to understand that granite is porous. And there’s a general rule of thumb that applies to most stone types, which is – ‘the lighter the stone the less dense it is’. And this often means that the lighter stones are more porous.

sealing natural stone by everything stone So if we take a silver grey granite which is quite a common stone to use for paving in Cornwall. This light granite is really porous and granite paving these days is really thin, often only 20mm thick. So sealing is an important factor with this particular product. Sealing isn’t just protecting the granite against staining from spills, its also preventing picture framing & offers protection against efflorescence too.

But when your sealing softer stones like limestone, marble, travertine or sandstone. You need to consider other factors too, like freeze thaw or salt water if your living right on the coast.

The main reason you need to consider sealant for natural stone patios and internal floors is the protection if offers against stains caused by spills. There’s so many items that can stain natural stone like food, oils & drink, but other every day items like face creams & sun tan lotions.

Without the sealer the stone is at risk of staining very easily, and once it’s stained then it’s there for ever. If you have sealed your natural stone then you have that window of opportunity to clean up the spill and prevent a stain.

Have a look below at some of the projects we have installed, where we have also applied sealer to the natural stone.

Limestone paving and concrete steps in Sennen right on the coast.

sealing natural stone by everything stone Granite paving setts and copings installed around the internal swimming pool at the Watergate Bay Hotel & Spa.

Limestone floors in a kitchen at Portscatho on the Roselyn Peninsular.

And marble floors & wall tiles in a bathroom in Cubert near Newquay.

We have been supplying and applying sealant on natural stone for a long time and we’ve worked on lot’s of different projects. Not just your standard internal & external projects like the one’s above and this sandstone patio below.

sealing natural stone by everything stone But as a company we have also carried out sealing works on quite a few old stone buildings around Cornwall, where the walls are solidly built with no cavity. Like the old Perran Foundry re-development at Perranarworthal near Truro.

sealing natural stone with everything stone First, all window & door openings needed to be covered up to protect the spray painted wooden window & door frames from the alcohol based sealant.

sealing natural stone with everything stone Protecting windows and doors in this manor is not always required.

sealing natural stone with everything stone The building developers were originally going to lime wash all the buildings once re-pointing works were completed.

The lime wash would allow them to apply a breathable paint.

But after various discussions with the developers about the sealant we use called Dry Treat Stain Proof, which is a micro porous sealer. They realised that the stone walls would stay breathable after applying the sealer and they would not only save money from not having to lime wash and paint, they would also save a lot of time and keep the beautiful appearance of the old stone work too.

sealing natural stone with everything stone This same sealer can be used on brick work too, where this house below has solidly built walls.

Or this old church’s stone facade.

Allowing these solidly built walls to breath is the most important factor when carrying out repair, re-pointing and renovation works.

If you are looking to enhance the colour of your natural stone by using a sealer then this is easy to achieve too, and looks quite nice as shown in these images below:

We have used Dry Treat Intensifia for these applications below.

Since we started working with natural stone many years ago, we have tried quite a few different sealers until we were introduced to the Dry Treat range of sealers.

And it didn’t take long for us to become certified applicators and stockists of the Dry Treat range of sealers. We now only use Dry Treat to seal all of our natural stone.

Dry Treat’s stain proof below is the main sealer that we use on internal stone floors, external stone patios, granite worktops, marble vanity tops and external stone facades on old buildings.

You can view all the necessary information on Dry Treats website here

Due to Dry Treats unique micro porous technology, the sealant actually lines the capillaries of the stone.

So it sits within the stone rather than on top like the old surface sealers used too.

This means that you don’t have to re-seal every 6 to 12 months.

You can go without re-sealing for many years.

To find out more about us as a company click here – About Us

If you would like to find out more information about sealing your natural stone then by all means give the Everything Stone team a ring on 01726 814466.

Or pop into see us at our showroom in Par near St Austell in Cornwall. We are open on Monday to Friday from 8 – 5 & on Saturdays from 9 – 2.