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Aerosol Adhesive Coverage for High-Pressure Laminate
Question
Forum Responses
From the original questioner: I'll sure keep the WilsonArt stuff in mind but I already have the 3M in hand. Yes I'm new to this type of adhesive and plan to do a couple of small test pieces first to get familiar with it. What about coverage? 3M says one will do about 120 square feet, which should be plenty for the job I have to do, but, having run afoul of extravagant claims before, I got three cans total. From contributor W: 120 square feet is coverage for all the required coats. I always double spray and if the substrate is raw it definitely needs two good coats on each surface. So maybe 30 square feet true yield which still seems to be a little optimistic. We keep it around for small parts but it’s not inexpensive to use a lot of it. A case of 12 cans goes fast compared to a five gallon bucket. From contributor R: I agree with contributor W that that coverage is very optimistic. A couple of things that you have to consider when people list coverage are: 1. Amount of coverage (1.0 dry grams/sq ft vs. 2.5 dry grams/sq ft) 2. Is it coverage or is it bonded coverage (100 sq ft of coverage is equal to 50 sq ft of bonded coverage). Again, a lot of aerosols are used for things other than HPL and may not require as much coverage. However, HPL is a very demanding application that I do not believe that you can afford to skimp on. As a point of reference, our Wilsonart 700A is in the same size can and we state that it covers between 16-17 bonded sq ft/can at a coverage rate of 2.5 dry grams/sq ft.
From the original questioner: Thanks guys for your input. I think that before I begin this job I'm going to order three more cans just to be on the safe side. I agree that it's an expensive way to do a countertop, and if this wasn't my very last one ever, I would go the more traditional routes. Your advice has probably saved me from walking into a disaster and I appreciate it.
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