I am still figuring this out too, but here's what I know. I tried to find reputable granite fab people, and all three companies I had bid it insisted on a bracket system rather than gluing the sink to the granite with epoxy.

Yes, your wood strips are acting as a bracketing system, and I was told this is an acceptable method. If it's tripping you out, remember that wood supports are what's holding up the rest of your granite countertops and hopefully your contractor knows his way around proper support.

Are your particular wood strips are sturdy enough? My guess is you are good to go, but I can't tell you that definitively. I also don't know about the clips or the seam. Try calling Blanco tomorrow with these questions, and if you could post back their answers, I'd appreciate it too!

Wow - you guys got me thinking now!!! We just got a 32" Blanco Silgranit and I think our base is is around the same size. Need to check ASAP since cabinets are going in Monday and template on Wend.

popmam- I don't have a silgranite sink, but a marble/soapstone one ie: VERY heavy! I was told by the sink fabricator (who works with soapstone all the time and really knows his stuff!) that 1X lumber was PLENTY strong enough to hold the sink and it's contents. I specifically asked about using 2x4 supports and was told that was overkill. My sink is 30" wide. Since I have soapstone counters, the sink will not be attached to those.
HTH!

I'm going to call the fabricator today just to verify what they did. I did look at the installation guide for the Blanco sinks and they don't mention a bracing system...just clips, but truthfully I like the idea of wood holding rhe sink rather than just epoxied clips in granite...I think I just expected thatit would be both.
Oldhousegal: thanks for the info. The sink isn't terribly heavy now...maybe 45 lbs, but we are going to install a garbage disposal and I don't want to worry about my Thanksgiving turkey falling into my sink base! I was thinking that. Maybe some 2 x 4 reinforcement would be good...so I guess I just might be a worrier. ( although lumber is cheap and overkil might be worth peace of mind) ;)

I may give Blanco a call today...I'll let you know what they say!

Popmom, you don't want the epoxy, whatever you do. If your sink fails someday, they may crack your granite when trying to remove it.

My fab guy was just here measuring and really liked the wood supports that the contractor put in. He said he will not need the clips in this application although I will save them.

popmom2, My fabricator just left after installing my granite and silgranit sink. I asked about the support and he repeated oldhousegal's post almost word for word. He also stated that he never uses epoxy and always uses a wood (1X) support system for sinks. HTH

Colorfast and suzie2003: thank you so much...I feel better now. I didn't have a chance to talk to the fabricator today, but it seems as though they did it correctly. They were very familiar with the silgranit sinks (which was part of the reason why we selected them). We did bids with two other places that said they could do the install, but they did not seem like they had done many composite sinks before...and my contractor has never installed one either...not as common in my area I guess.

Timely topic for me...just reviewing placement of my 2 silgranit sinks in preparation for templating Monday. My contractor is planning on routing out the plywood and having the sink lip sit on that ledge without using the clips. He thinks the fabricator then epoxies the marble to the plywood and lip of the sink, though now that you mention the sink replacement factor, I may have him just silicone the sink edge. Wasn't impressed with Blanco's instructions...especially for mounting my Diamond drop in as an undermount.

OT, what reveal did you choose?

Our fabricator really encouraged a negative reveal, but I didn't want a large one. I gave him the template that came with the sink and saw that it was a slightly positive reveal. He said he would follow that if we wanted him to...we ended up having him move the template in about 1/8". It actually ended up being nearly flush...maybe a hair negative...but looks pretty flush. I am happy with it.

Thanks popmom. I'm struck with a bad case of decisionitis these days...any input helps!