Installing new quartz countertops can instantly transform the look of your kitchen or bathroom. But is it possible to install quartz over your existing countertops? The short answer is yes, quartz can be installed right over your current countertops in many cases. Here is a detailed overview of the process, considerations, and benefits of putting quartz over existing countertops.
What is Quartz?
Before getting into the installation process, let’s first briefly go over what quartz countertops are. Quartz countertops are engineered stone surfaces that are made from roughly 90% ground natural quartz crystals combined with polymer resins and pigments. The result is a durable, non-porous, and stain-resistant countertop material that looks similar to natural stone.
Some key advantages of quartz:
- Extremely durable and scratch-resistant
- Resists stains, burns, and chips
- Non-porous so doesn’t require sealing
- Easy to clean and maintain
- Wide variety of colors and patterns
- Long lifespan compared to other materials
So if you like the look of natural stone but want a very low-maintenance and durable surface, quartz is an excellent option. Now let’s get into the details of installing it over existing countertops.
Can You Install Quartz Over Existing Countertops?
In many cases, yes, quartz can be installed directly over your current countertops. This is often referred to as installing “quartz overlays” or a “quartz overlay countertop.” This eliminates the need to fully remove and dispose of your existing countertop.
Quartz is an ideal material for installing over existing surfaces because it is non-porous and therefore won’t allow moisture underneath that could cause warping or damage. The installation process involves applying a bonding adhesive directly to the existing countertops, then setting the quartz slabs over top.
The key requirements for doing a quartz overlay installation are:
- Existing countertops must be in good condition with no major damage or flaws
- Surface must be clean and free of debris, grease, wax, etc.
- Countertops need to provide a smooth, level surface for the overlay
- Works best on solid surface materials like laminate, cultured marble, etc.
As long as your existing countertops meet these conditions, then a quartz overlay could be a great option to save time, money, and hassle.
Types of Countertops Quartz Can Overlay
Quartz overlays work best on certain types of existing countertop materials:
Laminate
One of the most common countertop materials that quartz can easily overlay is plastic laminate. Laminate provides an extremely smooth and flat surface that quartz can adhere to well. Just clean thoroughly and scuff sand laminate before installing the overlay.
Cultured Marble
Cultured or engineered marble countertops are also suitable surfaces for applying a quartz overlay. Make sure to prepare the surface properly and address any patched areas.
Tile
Tile countertops like ceramic, porcelain or natural stone tiles can have quartz installed over top. The grout lines need to be filled so the surface is smooth. It’s also important to make sure the tile is solidly adhered to its substrate.
Solid Surface
Materials like Corian provide an ideal substrate for quartz overlays. The surfaces must be free of wax, polish, oily residues, etc. Granite
Natural granite can work in some cases but has a higher risk of cracking and bonding issues. Make sure granite is in excellent condition first.
Concrete
Overlaying quartz on concrete requires proper surface prep but can be done. Fill any divots and make the surface as smooth as possible first.
Other Materials
Butcher block, stainless steel, and other countertop materials may also work but have higher risk of bonding problems. Always consult an experienced fabricator first.
The Overlay Installation Process
Installing a quartz overlay involves careful preparation and precision fabrication for best results:
1. Inspection and Surface Prep
The existing countertops must be carefully inspected for any damage, uneven surfaces, or flaws that could prevent proper bonding. The surface is then thoroughly cleaned and sanded to improve adhesion.
2. Additional Build Up If Needed
If existing surface is not completely smooth and level, additional material may be built up in thin layers to produce the proper substrate.
3. Adhesive Application
A bonding adhesive specially formulated for quartz overlays is applied evenly across the entire surface. The adhesive helps securely attach the new quartz.
4. Precision Cutting and Installation
The quartz slabs are cut precisely to the measurements of your countertops using advanced digital fabrication equipment. The pieces are then set in place and firmly pressed into the adhesive.
5. Finishing and Sealing
Once installed, the quartz overlay countertops are finished and polished at all seams for a smooth appearance. Excess adhesive is cleaned away and any joints are sealed.
6. Curing Time
It’s important to allow the adhesive to fully cure, which normally takes 24-48 hours. The countertops cannot be used heavily during this time.
Key Benefits of Quartz Overlays
Installing a quartz overlay provides many advantages over a full replacement or tear-out of existing countertops:
- Much lower cost – Overlays can cost 50-75% less than full replacements. You save money on demolition, new base cabinets, plumbing changes, etc.
- Faster installation – Installs in one day rather than multiple days for a new countertop. Much less disruption to your home.
- Retain existing structure – You can avoid changes to cabinets, sinks, backsplashes and other built-in elements.
- Less waste – Reusing your existing counters is more eco-friendly than demolishing and landfilling them.
- Updated appearance – Quartz offers a fresh, contemporary look that can transform the whole kitchen or bath. New colors, patterns, etc.
As long as your current countertops are suitable and refinished properly, a quartz overlay can be a wise investment that gives you an updated, high-end look while saving time and money. Consult with an experienced quartz fabricator to discuss your options.
Frequently Asked Questions About Quartz Overlays
Can you put quartz over laminate countertops?
Yes, laminate provides an excellent substrate for quartz overlays. The plastic surface just needs to be lightly sanded and thoroughly cleaned prior to installing the quartz.
Will quartz stick to existing countertops?
Quartz can bond very well to existing countertops with the use of proper adhesives. Urethane or epoxy adhesives are typically used to attach quartz overlays. Effective bonding depends on proper surface preparation.
How thick is a quartz overlay?
Quartz overlay slabs are typically 3/4″ to 1-1/4″ thick. The exact thickness can vary based on the smoothness of the existing counters and the desired final thickness. Multiple layers may be built up if needed.
Can you put quartz over ceramic tile?
It is possible to overlay quartz on top of existing ceramic or porcelain tile countertops. Any gaps or grout lines need to be filled to create a flat, even surface for the best bond. Surface preparation is key.
Is it cheaper to resurface or replace countertops?
Resurfacing with a quartz overlay is generally 50-75% cheaper than a full countertop replacement. The cost savings come from avoiding tear-out, new cabinets/walls, plumbing changes, etc.
How long do quartz countertop overlays last?
A properly installed quartz overlay can last many years, often 15+ years with proper care. Quartz itself is extremely durable. The substrate and installation quality impact overall longevity.
Conclusion
Installing a new quartz countertop overlay can provide a beautiful, functional, and affordable kitchen or bath upgrade. By overlaying quartz on your existing countertops instead of doing a full replacement, you can save significant time, money, and hassle. Just make sure your current countertops provide a sound surface for the overlay. When done properly, a quartz overlay can give you many years of durable, low-maintenance performance while completely transforming the look of your space. Consult with experienced quartz fabricators to discuss the options for your home.