Welcome to the Hard Rock Stone Works education page. This page is designed to answer some of the most commonly asked questions concerning natural, as well as man-made stone. It covers a variety of topics from the definition of granite to preparing for installation as well as details such as granite fissures, hairline cracks, pits, and even physical separation. Please review the questions to the left and select the ones that apply to your situation. If you don’t see the topic you are interested in, please ask your question using the form on this page.
Granite is a natural stone, formed many years ago when molten rock from the center of the earth’s core was pushed towards the surface. Granite’s extreme hardness, which approaches that of diamonds, makes it an uncommonly durable surface. It has a natural beauty which makes it appealing when used as countertops or other surfaces in the home. You can be sure that the granite you choose will stand the test of time and provide many years of enjoyment and service in your home.
Granite fissures occur naturally and in many stone types. The term “fissure” is used commercially in the stone industry to describe a visible separation along intercrystalline boundaries. This separation may start and stop within the field of the stone or extend through an edge. A granite fissure differs from a crack in that it is a naturally occurring feature of the stone. All granites contain some degree of the fissure. Some contain more than others. Fissures are not a flaw. Countertops will not be replaced due to the presence of fissures within your tops.
Pitting of the countertop surface, particularly in granite, is a commonly seen characteristic of natural stone. Granites are made up of several minerals, each mineral having different harnesses’. Granites contain quartz, feldspar, biotite, amphibole, ferrous titanium oxides, and other mineral combinations. On the Mohs Scale, diamonds are the hardest mineral with a rating of 10. Quartz and Feldspar have a hardness of 6.5-7 and are very durable. Biotite (small, black minerals found throughout the slab) on the other hand is very soft (2.5) and flakes easily. All true granites have biotite in their composition. Because Biotite is relatively soft and flakey, the first few layers can be removed during the polishing process. The pits do not make the granite less durable or otherwise inferior, and do not in themselves qualify the slab for replacement. Pits are common in all granite and should be expected when dealing with natural polished stone. Countertops will not be replaced nor will any financial compensation be allowed due to pitting on the surface of and granite countertop.
Chipping will occur, particularly in the igneous stone varieties, as a result of sawing operations. The exiting portion of the diamond blade used to cut granite will create many small chips. A small chamfer, called an “arris”, of approximately 1/16” x 1/16” can be used to eliminate most of these small chips. The use of an arris will make the seam appear wider than its actual dimension when filled. Larger chips may be repaired with epoxy or polyester resin if the completed repair is consistent in color and texture with un-repaired areas of the slab. Hard Rock Stone Works does not use arrises when installing granite countertops, as it makes the seams appear much wider. Seams are assembled and small chips are filled with polyester resin. Countertops will not be replaced nor will any financial compensation be allowed due to chipping along the seams of granite countertops.
The term “Lippage” as used in the stone industry, is the planar offset of the finished surfaces of two adjacent stone units. Due to the relatively tight seam used in countertop installations, even minor amounts of lippage are noticeable. Lippage may be unavoidable due to permanent wrap in the slab stock. There should be no detectable lippage at the front or rear edge of the countertop. Maximum lippage at the center of the countertop is 1/32” (0.8mm), Countertops will not be replaced nor will any financial compensation be allowed due to lippage within acceptable industry standards.
The sample used to make your color selection may not exactly match the slabs used to produce your countertops. Some granite colors, due to the different types of minerals in them, are more consistent than others. We recommend you schedule a time to view the lot of material that your countertops will be cut from. Unlike other fabricators, HRSW will allow you to pick the exact slabs that will be used in your project. Slab viewing is by appointment only. Please call 586-532-7763 to schedule an appointment. Countertops will not be replaced nor will financial compensation be allowed for countertops that do not match the sample that was used to make the selection.
Sealing a countertop will not prevent staining. Instead, it gives you a buffer of time to address and clean the spill properly. High use areas (opposite sides of the stove), may collect oils, grease, and spatter that could stain, or darken that area over time. The sealer prevents it from absorbing into the stone, but if it is not cleaned in a timely fashion, it could discolor that area. Since the makeup of each stone varies, there is no way to determine what that time window is.
Every top Hard Rock Stone Works installs come with an automatic 1-year warranty against staining. That means, if you do stain it, we will service, or replace the top for 1 full year from installation. At that time you would need to seal the tops yourself and refer to the manufacturer guidelines for application frequency.
Hard Rock also offers 5 years, and lifetime warranty protection for an additional cost. Please see your salesperson for details.
Granite is extremely rigid and can not bend to follow the irregularities of walls. No wall is perfectly straight. There will be areas where small gaps are visible. The size of these gaps is determined by the severity of the bows in the wall. Hard Rock Stone Works will caulk any gaps between the wall and the granite. Countertops will not be scribed in an attempt to follow the irregularity of any wall. Countertops will not be replaced nor will financial compensation be allowed due to gaps between walls and granite countertops.
The unsupported overhang can not exceed 1/3 of the support top, to a maximum of 6” on 2cm material and 10” on 3cm material. Supports such as corbels or brackets should be installed by the homeowner or contractor after the granite installation. Hard Rock Stone Works can install these supports if not done by the homeowner or contractor prior to the installation of the countertops.
Typically we can install a top 7-10 days from the day it is measured. This is providing that ALL the information we need to measure is on site. Also, any variance will need to be addressed expediently in order to assure this timeline.
Remember that this is a construction project. Sometimes events occur that can delay or even postpone an installation. Weather, traffic, or sickness can affect the schedule at any time. Rarely tops will break during transportation, or during the installation process. Hard Rock Stone Works will repair or remake the top and schedule re-installation as quickly as possible.
Though these occurrences are rare, please keep this in mind when scheduling other trades, or scheduling an event. A good rule would have a buffer of at least 3 weeks from installation until any planned event that you are hosting. No compensation will be provided for delays or for the impact these days may have on events planned by the customer.
Yes. The customer or a responsible representative over the age of 21 who can sign paperwork must be present during this process to review items such as; seam locations, overhangs, radius corners, and other such issues that commonly arise. You will be asked to sign the drawing of your countertops which will indicate the approximate location of the seams and other specific information of your project.
While it is highly recommended we measure without existing countertops, Hard Rock Stone Works recognizes that being without a working kitchen for several weeks would be very difficult. Although it is more accurate to measure for the tightest fit with the existing tops removed, it is not mandatory. With that being said, occasionally the measure tech will not see something that becomes visible after the existing tops are removed. It is the customer’s responsibility to make sure that cabinets are level, in good shape and have adequate support. Hard Rock Stone Works does offer countertop removal, plumbing disconnect and reconnect services. Hard Rock Stone Works will not disconnect a hardwired electric or gas line! Those must be disconnected prior to our arrival for the tear-out. No financial compensation or replacement will be allowed for delays in installation due to pieces being measured incorrectly if existing tops are not removed.
Yes, Hard Rock Stone Works offers this service to all customers. Please contact your salesperson to determine the cost associated with this service.
It is the homeowner’s responsibility to have countertops removed unless you pay for this service with HRSW. Prior to removing your countertops; the sinks, faucets and dishwasher will need to be disconnected. Most homes has shut off valves under the sink. If your home does not have shut off valves, a plumber should be contacted to have them installed. A countertop installation, in rare cases, may take a few days to complete and shut off valves for the kitchen faucets must be in place to avoid having water completely shut off to your home during this process. It is the homeowner’s responsibility to ensure all cutoff valves are in working order and do not leak. Hard Rock Stone Works will not be responsible for leaking plumbing or shut off valves that break when turned. HRSW will not disconnect any hardwired electrical or gas lines or move appliances.
There will be some unavoidable damage done during the tear out to surrounding walls, existing tiles, and possibly cabinets. Countertops installers are not responsible for this damage. This type of damage occurs with most installations and the customer should be prepared to make touchups and repairs once the countertops are installed.
The removal of existing countertops and the installation of new countertops is a major construction process. There will be minor damage to surrounding areas and large amounts of dust and debris will be created. No financial compensation will be allowed for this type of damage during the tear out process.
That is a great question. Most cabinets can easily handle the weight of granite countertops. It is often not possible to assess cabinet problems prior to the removal of the existing countertops. If significant problems are detected after the removal of the existing tops, either in structure or if the cabinets are not level, the installation of the new countertops may be delayed. It is the responsibility of the homeowner to have the cabinets repaired to acceptable standards of levelness and structure. If the installation must be rescheduled due to cabinet issues and a new appointment day is needed, return trip fees will apply. Countertops can be shimmed and installed with cabinets out of level up to 3/8”. Beyond 3/8” the cabinets must be repaired by the customer or a professional. Countertops sit directly on top of the cabinets and are held in place with silicone.
The special penetrating sealer molecules are hundreds of times smaller than competitor stone sealers and penetrate much deeper into the pore structure, even dense natural stones like granite. Inside the pores our special sealing molecules bond permanently by chemical reactions, creating a substantial, deep oil and water-repellent barrier.
The deeper Dry-Treat barrier, not only provides great surface stain protection, but also protection against more serious common types of damage caused by water ingress (penetration), including efflorescence, salt spalling, freeze-thaw spalling, and picture framing.
When should you NOT be sealing the granite? Granite sealer can prevent stains unless you’re sealing granite countertops that specifically should not be sealed (black granite for example). Now you’ve created a problem that even the best granite sealer and cleaner can’t fix.
Granite sealers are often misunderstood and misused as a marketing weapon. It’s the result of ignorance in the stone industry and malicious intent by salespeople of competing for countertop materials. See the best sealer for granite.
It’s generally believed that when a material is delicate and hard to maintain, it needs to be sealed. The stone industry set out to solve the concerns of staining granite countertops by soliciting chemists to find a sealer for stone. Unfortunately, the chemists didn’t know the first thing about petrography.
Granite sealer, the miracle in a bottle, became what I consider one of the most over-promoted, overrated, and over-applied products in history.
As a fabricator and installer, we always degreased countertops and gave them their final cleaning with denatured alcohol. Denatured alcohol, it turns out, does wonders for cleaning granite and cutting through film buildup on your counters. The result is the original shiny surface.
Cleaning granite countertops should only be done with specialized cleaners, not Windex or ammonia. The best performing product we have found offer is our branded Hard Rock Stone Works cleaner.
Sealers for stone (also known as impregnators) are below-surface penetrating sealers, not topical hard shell sealers like those, for instance, that are applied onto wood floors or furniture.
They are delivered inside the stone by natural absorption.
Some stones absorb more than others. Granite sealer consists of a solid part, or resin, and a solvent or water carrier. The solid stays in the stone and clogs the pores of the stone to keep liquid stains out. The carrier brings the solid into the stone and then evaporates.
One of the most important phases of the whole sealing process is the thorough and complete cleaning and removal of any residue from the stone surface. This prevents any alterations to the color or the finish of the stone surface. See Granite Sealers for suppliers of high-quality granite cleaner and sealer.
Now, knowing that the resin is absorbed for the purpose of sealing the stone's natural pores, it stands to reason that an impregnator cannot, and does not, offer any protection whatsoever to the surface of the stone –physical or chemical damage such as scratches or etching by acids.
It should be pretty clear that to work, an impregnator must go into the stone. But to do that, it has to be absorbed by it. Several commercial granites don’t absorb anything due to their inherent density.
Therefore no impregnator will ever go in.
If you apply it anyway, there’s the distinct chance that some of it will remain on the surface of the stone and it will be affected by spills, giving the impression that the stone is damaged.
This damage will appear in the form of “ghost water stains” or “water rings”. Some of the best stone surfaces available can be made to look “stained” by sealing them. When in fact, the sealer is what is stained. Do not seal granite countertops that do not need it. Especially black granite.
Different granite each have their own needs depending on how porous they are. Some granite never needs a sealer and should never be sealed (black stones especially). Others need several coats of sealer. Granite is very different than marble or limestone, so first, make sure you are dealing with granite.
You can test your stone to see if it needs sealer by putting a few drops of lemon juice in an inconspicuous place. If dark spots appear quickly, the stone is potentially a problem since it is reacting with acid. Chances are it cannot be sealed properly. This is what happens with limestone counters. If the drops take a minute or so to be absorbed, you can protect the top with sealer.
If the lemon juice doesn’t absorb at all, the stone does not need to be sealed. Contrary to what you may have heard, sealing granite is not always a necessary part of granite counter care. In fact, the performance of various granites can differ greatly. Some need sealer to prevent a granite stain while others don’t. MB Stone Care.
Many granite companies use poor quality silicone or siloxane-based sealers that require re-application every 6 months or every year. These sealers are very common and many misconceptions about sealing granite come from the widespread use of them.
We recommend and use a fluorocarbon aliphatic resin sealer. Unlike silicon sealers, it will not evaporate or go through any type of natural deterioration. That is why the particular brand we use for all our sealing, MB Stone MB-4 impregnator, comes with a 10-year warranty.
Unfortunately, fluorocarbon aliphatic resin is more expensive, but you get what you pay for. And in this case, it is a peace of mind and easy maintenance.
If you’re dealing with calcium-based stones like limestone or marble, no matter what sealer you use, you cannot avoid the damage caused by acids. Anyone who tells you differently is wrong.
And every customer wants to pay the lowest price possible. Most customers–and salespeople–get so hung up on dealing with issues of the price that they forget about the issue of value. That’s because the value is much more difficult to sell and measure. To value something means to consider its worth, excellence, usefulness or importance. Therefore, value is relative to the needs of the individual, whereas a price is a price. The most successful salespeople constantly sell value; the least successful rely on price.
Sealing granite is as easy as spray on, let sit, and wipe off. There’s no polishing, buffing, or strange applicators. It literally takes minutes. And if you’re using high-quality aliphatic resin granite sealers, you don’t need to keep applying coats year after year.
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