Breathable waterproofing for chimney brick in Cooper City

Paint and clear repellents do not mix

A clear penetrating repellent is made for bare masonry. Product data rules out painted surfaces, because the treatment cannot reach the pores through paint. On a painted chimney, a repellent would sit on the paint and do little.

If your chimney is painted, the choices are different. The paint itself may need attention, or it may be fine as it is. We explain what we see and whether any treatment is sensible. Removing paint to allow a repellent is a separate job with its own risks, and we discuss it before recommending it.

How the repellent goes on

Product data sets the application method. For many penetrating repellents, that means a low-pressure spray that wets the masonry without turning the product into mist. Some call for the surface to be flooded and a second pass applied while the first is still wet.

Small areas may be done by brush or roller when the product allows it. We follow the method in the data sheet for the product we name, using the same method on the test area. The written record notes how the product was applied.

Mortar joints ready for treatment

Mortar is part of the surface the repellent protects, and it has to be sound. Joints that are soft, sandy, cracked or recessed let water in regardless of any treatment. Brick industry guidance lists repointing such joints among the repairs to finish first.

We check the joints across each face. Where repointing is needed, it is a separate item priced by the extent of the joints. The new mortar is allowed its curing time before treatment. If only a few joints are affected, the repair can be local rather than the whole chimney.

What the waterproofing estimate lists

A waterproofing estimate should show the full sequence, not just the coating. For a chimney in Cooper City, ours sets out the following, with each repair on its own line.

Anything that could change the plan, such as an old coating found during the test, is noted with how it would be handled. Upfront pricing covers the listed items, and changes come to you before they happen.

• Repairs to finish first, such as joints, brick or the top
• Cleaning and the drying time before treatment
• The product named, and the faces it covers
• Protection for glass, roofing and plants