What would cause a concrete sealer to delaminate?

There is no quick and easy answer, since most sealer failures can be caused by multiple factors. However, one thing common to most sealer delamination failure is due to concrete that is too smooth or nonporous. This is especially true in the case of thin cementitious overlays.  The sealer  (or overlay) needs to bite or penetrate into the substrate for proper adhesion. Slick bare concrete surfaces or surfaces that have been previously sealed with film forming sealers should be stripped or prepared with a light acid wash prior to sealing.

Other factors that can inhibit a sealer from proper bonding: Over-application of the sealer, which creates high surface tension and surface buildup. Heavy applications are not better. Penetrating sealers must be applied in a nice “thin” coat to allow proper penetration.

To much moisture present in the pores of the concrete, which greatly reduces adhesion and can cause many other problems. Make sure your surface is “bone dry”. (No rain or water from the sprinkler system). The surface is too cold or hot. The ideal concrete temperature range for most sealer applications is 40+ to 90 degrees F.

To ensure your concrete drive, patio, sidewalk or other is sealed properly give  Aqua Pro Cleaning Solutions  a call and we will provide you a quote today!

Freeze/Thaw & Deicing Chemical Damage

This is the time of year when much of the country reacquaints itself with that four letter word again… snow, and his close friend ice. Both of which contribute to a seasonal increase in slip and fall accidents and the use of deicing chemicals.

Indirectly, deicing chemicals can do significant harm to concrete. Over time, the chloride (salt) component of many deicing chemicals (such as rock salt) is solubilized into water and carried to underlying rebar, causing it to corrode (rust). As steel corrodes it expands, causing the concrete to delaminate. This delamination is what causes potholes on highways, and can inflict much the same damage on your driveway, walkways and patio.

If that weren’t enough, deicing chemicals magnify the damage to concrete caused by freeze/thaw cycling. As warm temperatures melt ice and snow, water is created and absorbed into the porous concrete, which is similar to a hard sponge. As temperatures drop again, that water re-freezes and expands, causing the concrete to crack and spall. Although properly cured concrete is very strong in compressive strength, it’s relatively weak in tensile strength that counters the internal forces created by expansion as water freezes.
Freeze/thaw cycles and deicing chemicals cause damage such as spalling and scaling.
Deicing chemicals work by temporarily lowering the melt point of snow and ice, causing them to melt and creating water that re-freezes over and over again. De-icing chemicals will also allow concrete to become “super saturated”, and hold more water than concrete without deicing chemicals. More water means more expansion as it freezes, and more damage.

As a result, deicing chemicals cause concrete to undergo more frequent and damaging freeze/thaw cycles. Some deicers are better or worse than others. It’s advisable to do some research on the chemistry of any deicer before deciding whether to use it on your own concrete. Test results are easy to find online.

What can you do to protect your concrete from the ravages of freeze/thaw cycles and deicing chemicals? First, you can use a concrete sealer that inhibits the absorption of water and chlorides (salts) that do the most damage during repeated freezing and thawing episodes. We have sealers that will give your decorative concrete a gloss and “wet look” if that is what you prefer or if you have broom or smooth finished concrete, our penetrating sealer will offer superior protection from damage caused by freeze/thaw cycling and deicing chemicals.

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ref chemmasters

Roof Cleaning dangers and benefits

Roof Cleaning is not only cosmetically necessary, but also has health advantages. Roof Cleaning helps combat certain fungus. algae, mold and mildews that can grow and build up on roof tops.

Asphalt Roofing Manufactures Association (ARMA) top five Roof Dangers:

Algae: Effects wood, shake, metal, tile and asphalt shingles. Lowers property value and can deteriorate your roof. Algae can thrive in humidity and shaded areas.

Lichen: Effects wood, shake, metal, tile and asphalt shingles. May lead to increased shingle degradation leading to costly repairs or replacement. Lichen thrives in moist/humid conditions.

Moss: Effects wood, shake, metal, tile and asphalt shingles. May lead to roof rot and compromise the integrity of the area of the roof effected leading to costly repairs or replacement. Moss also thrives in humid conditions.

Mold: Effects wood and drywall. Some molds such as Stachybotrys (commonly known as black mold) can cause serious health risks and respiratory illnesses. Mold is fast growing and compromises the entire structure not only the roof without fast and efficient removal. Mold usually shows up as fuzzy black, green or brown colored spots. Mold can thrive in any region and only needs moisture to form.

Mildew: Effects roofs with poor drainage or where trees may over hang. You can recognize mildew by its green, black, red or pink powdery appearance. Mildew thrives in warm, humid and rainy climates.

Health Benefits of Roof Cleaning

  • Removes contaminants that cause allergies
  • removes contaminants that can lead to asthma attacks
  • Removes bird droppings and dander that can lead to hystoplasmosis

 Did you know?

According to NBC News Channel 2 special report, insurance companies are now canceling or refusing to renew homeowners policies due to dirty roofs in some areas.

Unsightly staining is more often caused by algae and moss. Since both have a tendency to damage roofs to the point of repair or replacement from lack of cleaning, insurance companies are not renewing or are going as far as canceling policies.

In conjunction with your manufactures maintenance recommendations roof cleaning may help to preserve your warranty.  Many warranties state that keeping the roof clean and free of debris is necessary to maintain the warranty and prolong the life of the roof.

 

 

-article originally printed in the UAMCC newletter issue#2

Rust-Oleum Coating Suits Mount, Merge

Five U.S. homeowner lawsuits over the performance of a deck coating have been merged into multidistrict litigation in federal court in Chicago.

The homeowners, from five different states, are seeking class-action status for their case against Rust-Oleum Corp., a division of RPM International Inc.

A sixth lawsuit was underway in Illinois but was merged in November with another complaint, court papers say.

RustOleumRestore RustOleumRestore
Sullivan et al v Rust-Oleum Corp. et al.
David and Kathleen Sullivan submitted these photos of their deck and porch as part of their lawsuit against Rust-Oleum. The couple’s action is one of several alleging premature failure of Rust-Oleum Restore.

…Continue Reading

WHY VERTICAL GRAIN?

Article originally posted at http://www.woodsiding.com/

While house building methods vary widely across the US, one common practice has been that carpenters often use “vertical grain” wood on surfaces such as floors, shingles and siding that need to endure extreme weather conditions. This practice can be seen here in New England on churches, meeting houses, schools, bridges, barns and homes. The builders of these structures learned from experience that the performance of “vertical grain” wood is superior when it comes to withstanding severe exposures.

“Vertical Grain” vs “Flat Sawn”Most lumber available is “flat sawn”. The annual growth rings run roughly parallel to the face of the board. As shown in the illustration A

Flat sawn,they tend to shrink across the width, and cup.

 

True quartersawn lumber produces a “vertical grain” where the annual growth rings are vertical to the face of the board. As shown in the illustration B, they tend to shrink across the thickness and remain flat.

vertical

“Vertical grain” boards are highly stable and show a minimum shrinkage and warpage. This enhances the durability and its ability to hold paints and stains.

 

Growth rings

The annual growth rings of wood are composed of soft porous wood that grows in the early spring and relatively harder dense wood that grows in late summer.It is the darker late wood that we count as the “growth rings”. …Continue Reading

It’s heating up!

You survived another harsh Chicago winter and if you’re anything like me have been longing for the day that you can get back to the beach, backyard BBQ’s (I have to confess, my grill often times assists in snow melting) and fun in the sun. It’s also time to make plans to have your deck cleaned, house washed, concrete cleaned & sealed or roof attended too! Those are just a few of the professional power washing and restoration services we offer at Aqua Pro Cleaning Solutions.

Give us a call to schedule your free estimate today to make sure you get a spot early in the season.

To all of our loyal customers, THANK YOU for choosing us as your exterior restoration specialist over the years, we hope to see you again soon. For everyone else, thank you for your consideration in using our services, we hope to add you to our every growing data base of satisfied users of our services.

;-D

Launch of new site

It’s been a long time coming but as of February 9th 2015, the new site is finally up and running. Thank you Henry Bockman for the inspiration and help in getting the ball rolling. Along with the new site, the next couple of weeks will find me back in the classroom catching up on some training endeavors. 2015 is shaping up to be a good year! Check back often for exterior restoration articles, tips and more.

Also look for the mobile version to be optimized in the very near future.

-Tom