A sealer reduces how much a surface drinks, so water, grease and dirt work their way in more slowly and clean off more easily. These guides cover choosing the right product for your surface, preparing it properly, and working out how much you need.
Stain removalGreen algae comes off a facade with a cleaner and a gentle rinse, not by blasting the render with a hard jet. What to wash the wall with, when you can do it yourself, how to use a pressure washer and what to do afterwards.
Stain removalMoss, algae, soot and leaf marks come off roof tiles with a cleaner, but rooted moss has to be scraped off first. How to tell the growth apart, what dilution to use by hand and with a pressure washer, and what to do with the gutters afterwards.
Stain removalA greyish-white haze on new paving, tiles or clinker is usually cement laitance. How to tell it from efflorescence, what removes it without harming grout or stone, and when you can seal.
Stain removalDust comes off with water, but efflorescence, cement laitance, moss and oil each need something different. Identify the soiling on your paving and pick the method: a brush, a pressure washer or the right cleaner.
Stain removalGreen growth does not come from dirt but from moisture with nowhere to go. Which is why washing alone does not end it - and what does end it is often free.
Stain removalHardened concrete on plant is not a matter of appearance but of wear. What removes it, how to prevent it, and why the job calls for two kinds of preparation.
Stain removalSlipperiness usually has one of three causes, and each has a different answer. Work out which one you have before reaching for a preparation.
Stain removalOil does not sit on top - it soaks in. Which is why a brush does nothing and harder scrubbing only spreads it. What works, and in what order.
Stain removalThe white bloom on new paving is not a manufacturing fault and not dirt. It is lime carried out of the concrete by water. What to do about it, and what not to do.
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