Sealing your patio after cleaning can protect it and keep it looking better for longer. Here's a complete guide.
Patio sealing is the application of a protective coating to patio surfaces after cleaning. For natural stone patios such as Indian sandstone or limestone, sealing is particularly beneficial because these porous materials absorb water, staining, and biological growth readily. A penetrating sealant fills the pores of the stone, significantly slowing the rate at which moss and algae can re-establish after a clean.
For porcelain patios, sealing is less critical because of the material's low porosity, but can still be applied to the joints between slabs to prevent weed growth. Concrete patio sealants are widely used and effective, reducing the porosity of the surface and making it resistant to oil and food staining. All sealant products should be appropriate for the specific material and finish of your patio.
The practical benefit of sealing is a longer gap between necessary professional cleans. An unsealed Indian sandstone patio may need cleaning every 12 to 18 months; the same patio sealed after cleaning may go 2 to 3 years before the next professional treatment is needed. Over the lifetime of the patio, this represents a meaningful saving in maintenance costs as well as a surface that looks better for longer.
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