Granite sealer

Granite is an open-pored natural stone and better protected against moisture penetration with a sealant. However, not all types of granite need a seal. A simple test reveals the need. Sealing is an easy and quick job.

Demand test, outdoor and cleaning

Whether your granite needs a seal or not, you can determine with the help of a white cotton cloth. Place the generously dipped cloth on the surface of the granite and wait five to ten minutes. If the cloth has discolored, even slightly, a seal is necessary. If a granite is sealed that does not require sealing, the surface appearance may be compromised.

Outside, a seal should always be made with appropriate granite. The hard-wearing and very hard natural stone has its only weak point with its porosity. In addition to the rapid pollution of moss and faster pollution, extreme frost can cause bursting spots. The infiltrated water freezes and the ice develops implosion forces.

In order to achieve the best possible protection for your granite during the sealing, you must clean the surface very thoroughly and let it dry out. Even spores of mosses or lichens as well as light moisture in the granite are otherwise "protected" by the seal. In addition to accelerating weathering, sealed moisture is a breeding ground for germs and bacteria. Especially for kitchen worktops and tabletops this effect has to be excluded.

Seal granite yourself

  • water
  • Acid-free detergent without limescale ingredients
  • sealant
  • White cotton towel
  • Microfiber cleaning cloth or mop
  • scrubbing brush
  • Hard bristle brush
  • spray bottle

1. Pre-clean

Spray the granite evenly with a gentle special cleaner and brush or scrub the surface thoroughly. Rinse with clean water and repeat the process.

2. Let it dry out

After cleaning, the granite must dry completely and dry to the bone. Protect the stone outdoors with cover foil. This should be placed floating over the granite to prevent condensation. Work outdoors only in dry weather. Avoid indoor activities that increase humidity, such as cooking or hanging wet laundry to dry.

2. Apply sealant

After a safe drying of at least 48 hours spray according to the manufacturer, the mixed or pure sealant evenly on the granite surface. Massage the product into the granite with light circular polishing movements.

3. Allow to act

Most manufacturers quote between four and 24 hours as the drying time. For safety reasons, you should use the granite surface again after twelve hours at the earliest, especially for surfaces that come into contact with food.

Tips & Tricks

There are permanent sealants designed for single use. In the outdoor area, the permanent means are preferable. For example, if you seal table or countertops indoors, you should repeat the process every two to three years.

Video Board: How To Properly Seal Granite Countertops