At Gray Concrete Construction, all work will be completed in a substantial workmanlike manner according to standard practices. We work very closely with our concrete producer and material suppliers to provide you with the highest quality project. We take great pride in our work and will do everything we can to satisfy you as a customer. However, all of our concrete work is created by humans and even under the closest supervision possible, small imperfections can and will be expected. Despite the skills of our workmanship, the quality of our materials and the strength and durability of concrete, our product is not without its inherent flaws. The information that follows provides some of the common issues that you can expect when working with concrete and provides suggestions on customer care and usage. If we are presented with an issue that exceeds the regular industry standard, we may repair or replace, as determined at the sole discretion of Gray Concrete Construction. Notice is given that all repairs are promised to return the subject to it's as built integrity - not to its as-built appearance. No warranty is expressed/implied regarding the cosmetics of the repair. The subject's appearance will be considered secondary to it's long term functionality and durability.
Concrete can be damaged by many factors beyond GCC's control. Damage from wear and tear, de-icers, chemicals, equipment, vehicles and other things are out of GCC's control and are not covered by this Limited Workmanship Warranty. GCC is not liable for repair conditions caused by misuse or abuse, ground settlement, winter conditions, accidents or acts of God.
This warranty does not apply to, and is waived by the homeowner as to, any construction work that has been subjected to an accident, misuse and/or abuse, nor does it apply to any construction work that has been modified, altered, defaced, and/or had repairs made/attempted by the homeowner or others.
This Limited Workmanship Warranty expires one year from the date of completion of the project.
Should you have any questions or concerns, please do not hesitate to contact us.
A full hard copy of our terms and conditions and our full warranty is always available upon request.
Samuel S Gray, Owner
All of our concrete work is created by humans and even under the closest supervision possible, small imperfections can and should be expected. Despite the skills of our workmanship, the quality of our materials and the strength and durability of the concrete, our product is not without its inherent flaws nor is it indestructible. What is guaranteed is your special project will be unique and one of a kind. It is impossible to create two identical projects, no matter how much planning and thought is invested, no project can be ever duplicated.
Concrete is man-made. Here is a list of some common imperfections or defects to be expected in concrete. It is very possible and likely for some of these occurrences to happen. The entire team is hands and eyes on each project and will try to avoid or remedy any occurrence immediately.
Cracks: This occurs in both broomed finishes and stamped finishes. Concrete cracks. Old concrete or new. Broom finished or decorative. There is nearly a 100% chance that concrete will crack, it’s just a matter of when. Contractor will take preventative measures but cannot guarantee that it will not crack.
Contractor will use reinforcement such as fiber, wire mesh or rebar and will apply the appropriate control joints. The objective is not to prevent the concrete from cracking but the goal is to direct the cracks into the control joints. Control joints are placed in sidewalks at an average 3-5 feet. The grooves are score lines that weaken the concrete so that when it cracks, the crack will hopefully occur in the grooves created. The same goes for steps. It is hoped that any cracks will follow the grooves in between the individual steps. In larger pads and patios, control joints will be placed at an average of 10 feet spacing. While control joints are very effective, there is still the chance a crack may develop elsewhere. It does not mean there was carelessness or a mistake was made during the install, but rather that the crack just did not follow the path Contractor hoped it would. Bare in mind, the use of reinforcement during the install is to maintain the structural integrity of the concrete.
Throughout any given winter there are many freeze-thaw cycles. During these events, the concrete is likely to heave but will hopefully likely settle back to its normal elevation again. However, the concrete is susceptible to cracking during the frost heave event.
It is common for driveways, sidewalks, porches, patios and garage floors to have some cracking or shifting over time from settlement. There is no way for Contractor to prevent sub-grade settling, underground root growth or shrinkage of the subsurface layers.
Flaking or Popping: While concrete is very durable, it is not always without flaws. It is possible that a stone or stone(s) close to the surface will be exposed at any time after the installation but such exposure WILL NOT compromise the integrity of the slab. There are various and unknown reasons that may cause concrete to flake or pop.
Crazing, Spider webbing or Surface shrinkage: This occurs in both broomed finishes and stamped finishes. When this occurs, thin wet lines are visible on the surface of the concrete that resembles a spider web. This is does not indicate any carelessness or mistake on the installation and usually only shows when wet concrete is in the process of drying.
Release color unevenness: This occurs in stamped concrete. Contractor will apply the release agent in a blanket form over the wet concrete before applying the stamp mats. During the stamping process, a mat is impressed into the wet concrete allowing this release agent to settle on top of the wet concrete allowing a two tone effect as an end result. When the loose release agent is cleaned off, some areas may appear darker or lighter than the other areas. This is out of Contractor’s control as to how the release agent settles into the wet concrete.
Color variation: This occurs in both broomed finishes and stamped finishes. When larger projects require multiple pours, the seam where one pour meets the other pour can show a color variation between the two. Same team. Same concrete supplier. Same mix. Same or similar weather conditions. Same process. It is just the unpredictability of concrete. If Client is only replacing a section or sections of an existing driveway, patio or sidewalk, be aware that the newly replaced sections will not match the existing and will be very noticeable. Old concrete vs New concrete. Color charts and pictures of previous projects are only representations of colors and are not to be solely relied upon. Colors represented on a computer screen or a printed brochure are just a representation of results and should not be relied upon for the final color of a project.
Whitening: This occurs in stamped finishes. If moisture gets trapped beneath the sealer it can cause a whitening or hazy appearance. Contractor should be made aware of this as soon as possible to remedy it.
Do not drive on "new" concrete for at least 5 days.
Do not allow water to drain beneath the slab as this may cause settlement cracks.
Do not use salt or other de-icing chemicals on the concrete (This is especially harmful during the first winter). If at all possible, hose off your car of any street salt before parking on concrete.
Do not allow your dog's urine (on your decorative concrete) to cycle through the numerous freeze-thaw cycles during the winter. Dog urine is extreme acidic and can cause damage to your decorative concrete. We recommend cleaning it as soon as you witness it.
Do not allow the
dragging or pulling of patio furniture and decorations on fresh concrete. This may result in scratching of the surface
or peeling of the sealing.
Surface maintenance is out of Contractor’s control as heavy traffic, heavy use, chemicals and severe weather may and can affect the performance of the sealer. All future care and maintenance of decorative concrete is the Client’s sole responsibility. The frequency with which decorative concrete will need reseal will vary from project to project. It is highly recommend that stamped concrete projects be kept clean and resealed only as needed. Between sealing, the surface shine and color may fade slightly. A fresh coat of sealer will protect and keep the color vibrant similar to the day it was installed; however, too much sealer can cause a host of other problems - the most common is whitening.
RESEALING TEST: To determine if the
concrete needs to resealed, sprinkle water on the concrete surface. If the water is absorbed and makes the
surface noticeably darker, the sealer has worn off and resealing the project
will restore some or all of its original beauty. If the water is not absorbed and beads on the
surface, the concrete should still be protected and likely does not require
These are some common questions that people ask about concrete. If your question isn't addressed here, please do not hesitate to ask.
Q: How thick should my concrete be poured?
A: It really depends what kind of weight will be applied to the concrete on a regular basis. We recommend: Sidewalks to be 4" thick, driveways to be a minimum 5" thick, and anything used for heavy equipment to be 6" to 8" think. Each situation is different so we will assess each project accordingly.
Q: Does concrete crack?
A: Yes, unfortunately it is very normal for concrete to crack, it's just a matter of when. This is not "always" a sign of poor workmanship. There is no guarantee that your concrete will never crack.
Q: How long after the concrete is placed can it be used?
A: Please allow 24 hours for the concrete to cure before walking on it. As for driveways, it's recommended that you not drive on the concrete for approximately 7 days. But it can take approximately 30 days for concrete to fully cure.
Q: How long will my concrete project take?
A: Most average sized residential jobs require two days, at most, to complete for the standard finishes - one day to tear out and one day to pour new concrete followed by clean up. For decorative concrete, it could take an additional day or two as we need to return to clean and/or seal. For more complex projects, it will require additional time.
Q: What is the purpose of the lines that you saw cut into the concrete?
A: The lines are called control joints and the purpose is to try to control any future cracks. Though we cannot guarantee that your concrete will not crack, the control joints will help relieve any tension within the concrete and if any cracks form, it will hopefully stop at the joints. There are other preventative measures that can used for your project, please do not hesitate to ask about them while we are quoting your project.
Q: Can I use a de-icer that says it is safe for concrete?
A: There is no such thing as a safe de-icer. De-icers will cause flaking. It is best that you use sand for traction. Road salt from your tires can cause damage to your concrete driveway. It is recommend that you clean your driveway with fresh water as soon as possible from any possible road salt. It is also recommended that you clean the snow off your new concrete with in a reasonable time period. The freeze and thaw cycles can cause flaking of the surface of the concrete.
Q: How often do I need to reseal my decorative concrete?
A: Your stamped concrete should only be resealed when it's absolutely necessary to help maintain it's beautiful characteristics. Heavy traffic areas or an extreme winter can create wear on the sealer. If your stamped concrete has lost it's shine but passes the "resealing test", we do not recommend resealing. Stained surfaces are sealed; therefore, the same rules apply as for stamped concrete. Unlike colored or stamped concrete where a color additive is mixed into the concrete, the stain is applied onto existing or fresh concrete and sealed. Sealer through time may wear off; how frequently is out of one's control.