- One Project Closer - http://www.oneprojectcloser.com -
SunnyDry Concrete and Masonry Foundation Waterproofer Sealer Review
Posted By Fred On July 3, 2008 @ 7:30 am In Construction | 31 Comments
About one year ago we applied Wall Firma’s SunnyDry Foundation Waterproofer to seal more than 500 sq ft. of mostly below-grade cement block in our basement. Our goal in applying SunnyDry’s Sealer was two-fold: (1) to eliminate a small amount of water seeping through the block and pooling near the base of the exterior walls, and (2) to eliminate dampness on the block and reduce overall humidity in the room.
We applied a competitors’ product, Thoro Company’s Super Thoroseal, to a different 500 sq. ft. of below-grade wall space in the basement. This review focuses soley on our experience with SunnyDry. Super Thoroseal is reviewed separately , at that link. In the picture here, Sunny Dry is gray, and Super Thoroseal is white. The wood studs sitting in front of the wall are anchored at the top and bottom of room, and are not anchored to the block walls (this would compromise the waterproof seal).
We chose SunnyDry for its economical price, its 10-year guarantee to stop water and dampness in below-grade applications, and its relative ease of application over other types of waterproofing methods (trenching and sealing from the exterior, installing a french drain inside, etc).
Overall, we are extremely pleased with the results. SunnyDry’s Foundation Waterproofer completely sealed the basement walls. We’ve had no water seep through the block; the walls aren’t even damp. Humidity in the room is substantially reduced.
We purchased SunnyDry Concrete Waterproofer from our local Lowes in 60lb. “contractor size” buckets for $28.98 each (2007 price). The sealer is gray, both in powder form and when it’s dry on the walls. The dull color isn’t particularly important in our application–our walls will eventually be drywalled–it only serves to distinguish the area of the wall covered by SunnyDry’s Waterproofer from the area covered by Super Thoroseal.
SunnyDry is a a portland cement-based powder waterproofer designed to seal exterior below-grade walls. Wall Firma advertises that their product will work on concrete, brick, stone, or masonry. Our review is limited to concrete block. While not applicable to our application, SunnyDry can also be used in potable water installations (e.g. drinking water tanks), bird baths, fish ponds, fountains, and pools. If we ever build a fountain, they’re top on our list to seal the inside.
SunnyDry’s sealer has chemicals in it that, when activated with water, react and subsequently dry to a water tight seal. The Waterproofer actually seeps into the pores in the concrete block and keep water trapped behind the block. Super Thoroseal claims their product will stand up to 200PSI of water pressure. Wall Firma makes no PSI claim on their Foundation Waterproofer. For comparison, most latex-based waterproofers that you “paint on” seal walls to approximately 20 PSI. I assume that, based on the technology employed in Super Thoroseal and SunnyDry, SunnyDry has a similar waterproofing capability. In our situation, we have french drains  built into the exterior front of the house that drain to the rear, so we don’t have a pressure build-up concern.
Overall, preparation was relatively easy, but a bit time consuming. SunnyDry recommends four steps to prepare the walls for applying the waterproofer:
Applying the sealer is relatively simple, but very tedious. In a nutshell, applying SunnyDry boils down to a few easy steps:
SunnyDry recommends two coats in order to obtain the best waterproofing performance. We found this true. After one coat, we still had some water seeping through the wall. After the second coat, the dampness was eliminated. We actually applied a third coat, something SunnyDry indicates may be necessary at the base of walls or in tough-to-waterproof spots. We did it because we’re paranoid about future leaks.
SunnyDry claims 265-340 sq. ft. of coverage for the first coat on porous surfaces and up to 440 sq. ft. on second coats and non-porous surfaces. We found their claim to be spot-on. It took us approximately five 60lb. buckets to cover our 700 sq. ft. area with three coats.
After 12 months of use, many products have left us wanting more – a feeling that we really didn’t get what we paid for. SunnyDry Foundation Waterproofer has left us feeling just the opposite. We’re extremely pleased with the results, and 1 year later, we’re enjoying a dry, relatively low-humidity basement space. Way to go, SunnyDry!
What do you think? Have you had a good experience with a basement waterproofing product?
Article printed from One Project Closer: http://www.oneprojectcloser.com
URL to article: http://www.oneprojectcloser.com/sunny-dry-basement-waterproofer-sealer-review/
URLs in this post:
 Super Thoroseal is reviewed separately: http://www.oneprojectcloser.com/basement-wall-waterproofer-review-super-thoroseal/
 french drains: http://www.oneprojectcloser.com/dig-a-drainage-trench-to-avoid-basement-flooding/
Copyright © 2011 One Project Closer. All rights reserved.