I plan to install my 3cm thick quartz countertop this week. It is roughly 3 feet by 4 feet and will be sitting on top of my kitchen island base cabinet (pictured below).

My first step will be to place the countertop on the base cabinet without silicone and get it in the exact desired position. Then I’ll trace an outline on the bottom of the quartz.

I plan to put painter’s tape along the outside of the top of the cabinet to catch any silicone from getting on the cabinet. I’m using 100% silicone transparent MONO Kitchen & Bath Sealant (product link below) to adhere the countertop to the metal strips on the base cabinet. My original plan was to use PL construction adhesive, however, the cabinet installer who I’m purchasing the countertop from assures me that 100% silicone is best for this type of application and it’s all he ever uses. It's also been recommended for use in this application by members of the Doityourself community in an earlier post.

Once I apply the silicone I will have three people holding up the countertop while a fourth person looks from below to give direction on correct placement. Once we’re in the correct spot we’ll lower the quartz on to the cabinet and let it dry for 3-4 hours.

I’m just wondering if I’m missing any steps or if anyone has any suggestions I’d love to hear them as I’m hoping this DIY goes well. Thanks!

https://www.homedepot.ca/product/mon...0ml/1001001931

 

Have some rubbing alcohol handy to clean up any silicone messes. Like I said in your last thread, you don't need a lot.

 

I don't think you need to mask off as you don't need much caulk and it doesn't drip or run like paint would. Also, if you can't get four people together I normally do it by myself. I lay a few pencils across the top. Position the top where you want it. Then squirt your dabs of silicone in the gap between your counter and cabinet. Then remove the pencils one at a time and let the counter lower straight down.

 

Just thought I would post a couple pictures of the countertop install. Just need to install the handles.

 

Wow, that's a lot of white.