RomanPRO-515 Ultra All-Purpose, All Surface MS Polymer Construction Silicone Adhesive - Contractor Pack, Contains 6, 20.2-oz Sausage Tube, 1 Sausage Caulking Gun, and Three Applicator Tips.

I was able to mend the pieces of my concrete porch back together. It was not a large project so this tube was more than enough. It’s easy to work with but it can be a bit messy, which is find by me. I now have a porch that look 100% better. I’m new to using this product but as a newbie, I didn’t have any problems. It bonds well, the drying time was pretty quick and I’ll definitely be purchasing more.

Had some pieces of concrete that broke off from my driveway, so I used this to re-adhere them back in place and it worked well. You do need a sausage type caulk gun or similar but not a conventional caulk gun as the wrapper is not a solid tube. This can be rather messy so make sure you have some rags on standby. After applying the glue to both sides of the concrete pieces I pushed them together and then clamped them so they wouldn't move. Next day took the clamps off and they are staying so far, will be interesting to see if they hold through the winter when the ground experiences good amount of freezing and thawing.

When I ordered this construction adhesive, my idea was to use it to glue back main pieces of the crumbling (but structurally inessential) edge of my porch slab (see photo).The construction adhesive was shipped promptly and arrived safely. Using it as planned would certainly be an option. However, I've got a cousin in the SeaBees (the Navy version of the Army Corps of Engineers) who was kind enough to advise me before I got started.My cousin explained that what's happing in that photo is a fairly common problem for old concrete slabs. The technical term for it is "spalling." It's probably caused by water running down the posts of the railings and rusting the horizontal iron bar holding the railing in place (visible in the photo), which then expands, cracking the concrete.Considering the size of the area I'm trying to repair, my cousin thinks it would be very difficult to get a smooth final surface using construction adhesive to glue to old pieces back in place.Better to do things right: clear off as much loose concrete as possible, strip the paint off the porch and the railings, use a bucket of concrete patch to rebuild the edge, put flexible waterproof grout around the base of the railings, then repaint the porch and railings.Again, there's nothing wrong with this construction adhesive. I have no criticisms, so I'm giving it five stars. My plan is to save it and use it when I have a smaller project; if I encounter any problems at that time, I'll revisit this review.My only advice, as the title of this review suggests, is to consider the size of your project first. This seems perfect for small projects, but not so much for big projects.

I used this to place between concrete blocks I was putting together for building raised garden beds. It went on white, a month later the caulk is still bright white and is still holding the cement bricks firmly in place. However, this stuff was horrendous to use. It made such a sticky mess! If it would have came in a caulk gun tube with a tip rather than a bag that would have solved any problems I had and I would have given it 5 stars. But being as it came in a plastic bag and had the consistency of extremely sticky thick marshmallow fluff, I got this stuff all over my hands, and it was pretty hard to wash off. I got some on my pants, and after several washes you can still see the white caulk stain. I got some on my caulk gun and it will forever be there. It was a mess, but it works.

The Roman Pro-515 is some serious adhesive. I started using it on cracks in the front walk and went on to use it in the driveway. Works very easily and doesn't shrink out of the crack when curing. I am not familiar with this type of adhesive but it's very strong and has great adhesion to almost any surface you stick it to. I am currently using it to bond the seams on an experimental foam and fiberglass boat I am working on and it's amazing so far. I will keep you posted.

Roman PRO-515 Ultra All-Purpose All Surface Construction Adhesive is an excellent addition to the category of heavy duty adhesives, and I am pleased with the performance on the variety of projects I’ve used it on. I’ve made a couple of cobbled together tables with leftover, recycled or upcycled items and this construction adhesive bonded all the different types of materials these items were made of including picket wood, chipboard flats (old clipboards without the clips), scrap wood, thin ceiling tiles and reclaimed wood flooring. I used a small, refillable caulk tube so I could dispense the adhesive with a regular caulk gun on joints between the picket wood pieces. I clamped the pieces together until that cured. I also used the adhesive between layers of materials and clamped the edges and put heavy objects on top until the adhesive cured.I stored the remainder of the adhesive in a ziploc bag to keep it from hardening in the sausage pack. I had no problems between my 2 projects with respect to the adhesive staying fresh and usable to refill my caulk tube out of the ziploc bag.For me, this adhesive works as well as any other construction adhesive I’ve ever bought, including the types sold in the giant orange DIY store in caulk tubes and other brands sold on Amazon. I’m recommending!

It can be used to bond a variety of materials. Similar to other adhesives I have used in the past. I was very satisfied with the bond strength. I hung some heavy wall panels and fixed a paver walkway. It's very easy to work with and the bonds are permanent!A special gun is required. You can get a good one on Amazon for about $50, or a battery powered for about $225

This comes in a tube like you might buy chocolate cookie dough in. I just cut one end and squeezed it out. I used it to glue some rebar into a cement wall. It worked fine I think, I haven't tested it by trying to pull one out but I don't think that's necessary. Anyway it dries to a soft rubbery consistency. It would no doubt be water proof. I think it's a good product depending on what you want to use it for.