To guard against water damage, the effects of climate change, and pollution, brick structures should be waterproofed. The sealant should be applied every 5 to 10 years to newer homes with above-grade brick, but it could be necessary to do so more frequently on older homes or homes with below-grade brick. The frequency of treatment will vary depending on the weather, the porosity of the brick, and the waterproofing compound being used, among other things. Regular inspections are necessary to assess the building's condition and choose the right moment for reapplication. The structure will last longer and be more resistant to water damage with waterproofing.