Preparation of the Base Cabinets
Proper preparation of the base cabinets is crucial for a smooth quartz countertop installation. Here are the key steps involved:
- The base cabinets must be level, plumb, and securely fastened to each other and the wall. Any uneven surfaces will result in gaps between the countertop and cabinet.
- The top edges of the cabinets must be uniform and flat to properly support the countertop. Any high or low spots need to be sanded down.
- The cabinet bases should be cleaned thoroughly and any rough edges smoothed out. Debris left on the cabinets can prevent proper adhesion.
- The walls above the cabinets should be prepared – old backsplashes removed, and the area cleaned and smoothed out.
Adhering the Countertops
Quartz slabs are attached to the base cabinets using adhesive and sealant:
- After inspecting the slab fit, the installer will apply dots of silicone adhesive every 6 inches across the top of the cabinets.
- The quartz slab is then lowered into place gently. The installer presses down firmly on the countertop to flatten and spread out the adhesive dots.
- Excess adhesive squeezing out along the edges is removed using a putty knife. The adhesive cures and bonds securely within 24 hours.
- For added stability, the front edge of the countertop may also be secured to the cabinet using metal brackets. Screws attach the brackets firmly underneath.
Sealing the Joints
The seams between the quartz slabs and between the countertop and wall/backsplash require meticulous sealing:
- The edges of the quartz slabs are held firmly together while a special epoxy resin is used to glue the seams.
- The epoxy cures to create an impervious, stable bond along the length of the seam.
- Any gaps between the countertop and wall are sealed using clear silicone caulk. This prevents moisture ingress and gives a neat finish.
- The caulk is smoothed out using a finger or spoon shaped caulking tool before it dries.
Finishing Touches
Once installed, the countertops require a thorough cleaning and polishing:
- Excess adhesive or epoxy is carefully scraped away using a plastic putty knife.
- The entire surface is cleaned with a non-abrasive quartz cleaner to remove residue.
- A foam polishing pad is used with the quartz polish to buff the countertops to a glossy sheen.
With proper installation and finishing, quartz countertops will remain securely attached and look pristine for decades. Hiring professional installers is highly recommended to ensure perfect results.
FAQs About Attaching Quartz Countertops
How long does it take to install quartz countertops?
It typically takes 2-3 days for a complete quartz countertop installation. Day 1 involves tear out of old countertops, inspection and preparation of cabinets. On Day 2, the slabs are precision cut, polished, attached to the bases using adhesive and seams sealed. Finishing and cleanup is completed on Day 3.
Is it better to glue or screw on quartz countertops?
Gluing is the primary method used to secure quartz slabs. Dots of high-quality silicone adhesive between the quartz and cabinets creates a strong bond. For extra support, brackets can be screwed into the front edge but gluing is sufficient in most cases.
What color caulk is best for quartz countertops?
A clear silicone caulk blends in best for an invisible seal between the countertop and walls/backsplash. White caulk can also work for light quartz colors. Avoid darker caulks which will be visible and unsightly.
Can you install quartz countertops directly over laminate?
No, laminate countertops must be removed prior to installing quartz. The quartz needs a completely smooth and level cabinet base to adhere properly. Uneven laminate seams under quartz will eventually crack or dislodge the slabs.
How thick should quartz countertops be?
A thickness of 2 cm (3/4″) is the minimum recommended for durability. Many installers prefer 3 cm (1-1/4″) thick quartz slabs to prevent any flexing or cracking over time. Go thicker for longer spans between base cabinets.
What household items can damage a quartz countertop?
Avoid exposing quartz surfaces to strong chemicals like paint removers, drain cleaners, etc. Bleach and other cleaners are okay for short contact. Also refrain from cutting directly on quartz or placing hot pans from the stove or oven. Use trivets and cutting boards to protect the surface.
Conclusion
Installing quartz countertops requires careful preparation, precision cutting and fitting of the slabs, secure gluing to the cabinets, and meticulous sealing. Hiring professional quartz fabricators and installers is highly recommended for flawless results. With proper installation and routine care, quartz countertops will remain firmly adhered and enhance any home kitchen or bath for decades.