Water from rains melting snow or the garden hose that you have used to wash the patio can get through the concrete surface and encourage the growth of moss and algae.
Sealing outdoor flagstone patio.
Using a yard broom sweep the flagstone patio area of any loose debris.
Http www smartseal co uk sealers natural stone sealer step by step guide on how to clean seal maintain and the after care of natural stone surfaces.
Stains are unavoidable in outdoor living spaces devoted to cooking and dining.
Now concrete which is certainly used for a lot of patios and in this instance for the mortar it needs to be sealed.
It can be used to seal all types of natural stone surfaces such as granite marble limestone sandstone travertine and others.
There are two common types of stone you will find outdoors that need sealing and waterproofing.
Once the patio is cleared of debris use the power washer to remove any stubborn build up of dirt or plant matter including moss and lichens.
Step 1 clear and prepare the flagstone patio.
If using film forming type sealer.
The best type of sealer to use on flagstone is a water repellent sealer.
The sealer lasts 3 to 5 years on indoor stone surfaces and lasts 1 to 3 years on outdoor stone surfaces.
Patios are frequently exposed to a number of things like rust that can leave ugly looking stains on the surface.
After grout clean up and drying apply sealer to stone and grout.
Apply 2 or more thin even coats.
Both can be easily damaged by the harsh effects of water and ice.
All flagstone is subject to water stains particularly in areas where the water supply is alkaline or contains minerals.
Wait at least 24 hours or more.
But before you seal it you want to let it cure for about 30 days.
But doesn t it look new.
Whether used for a garden path or a back patio flagstone lends a natural look to outdoor spaces.
A sealer fills the pores in the stone and repels spills.
Water repellent sealers penetrate into the surface of the flagstone where they chemically reacts to form a water repellent barrier.
Looks aside flagstone endures all sorts of climate conditions though it may get a little warm.
Now the rest of the patio here is done in a flagstone and this has been down for about 70 years.
Depending on the type of water repellent sealer the flagstone will remain unchanged or it will have a darkened wet look finish.
For this reason all new flagstone paving should be sealed upon completion.
Sealing and waterproofing stone stone masonry is often used in the construction of outdoor hardscapes including stone walls patios swimming pool decks sidewalks and more.
Be sure stone is clean and dry before sealing.
Sealing concrete patios can also help with stain protection.
Sealing a flagstone patio is the best way to protect and preserve this feature.