Chimney Rx Masonry Chimney Water Repellent is a penetrating, VOC compliant, water repellent which contains a proprietary modified siloxane. This water-based siloxane penetrates masonry up to 1/4 inch or more depending on surface porosity and moisture content at the time of application. Chimney Rx Masonry Chimney Water Repellent reacts with the minerals in masonry in the presence of ultraviolet light and atmospheric moisture.
Reviewed by: Eileen from Massachusetts.
This product had easy to understand directions and went on quickly with a sprayer. Fast shipping and packed securely.
Excellent Customer Service
Reviewed by: Brian from Virginia.
Too early to tell if the product will last, but it went on easy with a sprayer. The store also has excellent customer service and fast shipping.
Pleased so far
Reviewed by: Hans from Connecticut.
Easy to apply. My old chimney soaked up a lot of it. One side where I didn't go all the way to the top and came back and finished the next day, there were very faint streaks where the newer application ran down on the dried/treated bricks. I don't think anyone would notice the streaks without looking closely, and they are not visible from any distance even when looking for them.
Reviewed by: John Hoeglund from Detroit Lakes, MN.
We've had one heavy rain since I applied the sealant. No leak! Hooray!
Reviewed by: Svet from Marietta, GA.
I have been trying to fix my chimney for a while. Every major storm I had water dripping through my fireplace into my living room. Finally I bought ChimneyRx and applied it following the directions. Now I can report that after all the rain that we had in the fall my fireplace is DRY. DTEPStore is an amazing company with excellent customer service. Highly recommend!
Reviewed by: Jim Darr from Illinois.
Fast Shipper. Just applied yesterday because of warmer weather, put on two coat, will not know results till after heavy rain.
Reviewed by: Mike from Virginia.
Our problem was water dripping into our fireplace. Applied two generous coats of this product to the exterior brick where we found leak after doing water test on brick. After two days of steady rain, we see no leak or evidence of seeping on interior fireplace brick. So far so good..
Reviewed by: Wayne from Illinois.
I applied the waterproofing to my masonry chimney and it almost stopped the rain water that was weeping into the interior brick face. I applied a 2nd coat and still awaiting for the final results since we have had minimal rain. The application by a tank sprayer is the best way to apply. For those having a moisture problem, it is definitely worth the investment to correct your situation.
Coverage rates will typically range from 90-150 sq. feet per gallon depending upon surface porosity. Do not thin product.
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Hardware > Building Consumables > Protective Coatings & Sealants