![]() The differences between Quad and Quad Max is that Max stretches 5X and cures faster to paint sooner (Quad 7-14 days to cure and paint, Max is 2 hr cure 1hr paint). It adheres very well and stretches very well, good for things that expand and contract. And "elastomeric polyurethane' IS a thing, so probably Quad is similar to a polyurethane sealant and thus similar plusses and minuses. Loctite polyurethane sealants are simply 'polyurethane based' according to PDFs. Quad is similar to a polyurethane base sealant if I'm not mistaken. Quad is an "Elastomeric polymer and resin based". Hence I try to use clear silicone as much as possible, but will use a colored (white, almond, etc) silicone even if the color isn't an exact match before opting to use a 'paintable silicone' as the last resort if exact color match and application dictates. Pure silicone is not paintable but there are paintable silicones, but my theory is that the additives which make it paintable take away from a % of ingredients which make it durable. The silicone itself may last 100+ years in harsh elements, but the seal may fail due to expansion/contraction/structure settling or dis-adhering by moisture getting into wood. Sticks amazingly to ceramic tile or glass which is a smooth surface but strangely, in general it's the worst for adhering to wood, vinyl, galvanized metal, and especially porous masonry or shingles. Some articles say silicones have a 20 year warranty and polyurethanes only have 5 year, which I'd feel about as confident using bubble gum if it's really only 5 years before polyurethane starts going. Especially difficult/dangerous areas to caulk which won't be inspected/noticed. To me, a good exterior sealant should last 50+ years. "SIKA warrants this product for one year from date of in- stallation to be free from. Sika polyurethane construction sealant is only 1 year: Loctite polyurethanes says they express no warranty. Quad, I can't find any warranty or guarantee, and it hasn't been around very long. ![]() PDF might only say about 20 year.Ī box of DAP dynaflex 230 (white mineral oil based) says '50 year durability' on it, but the actual warranty is just 12 months. A tube of GE silicone might say Lifetime Guarantee on the tube but actual warranty info in a. ![]() Silicone usually has the longest warranty, but sealant warranties are misleading. ![]() Can stand up to about 400 degrees F which is good for a hot vent cap - there are high-heat specific sealants which spec about 600F but might not be as weather resistant, and there are fire resistant caulks such as 3m IC 15WB+ which IS exterior-grade but I'm not sure if a fire-resistant sealant has nearly the weather resistance as a regular silicone sealant. Stays %100 waterproof and does not shrink. Can be gunned easily in very cold weather also. %100 silicone sealants labeled for exterior siding, windows etc (not bathroom silicone, although I suppose those could work too but each might have different additives for exterior vs tub conditions). Interior caulk for trim i.e basically used as a wood filler and then painted, just a $2 tube of DAP interior paintable, although that may shrink and crack later so prefer something else specifically crack/shrink proof but %100 paintable and non-glossy/siliconized which won't flash when light hits it if it matters. Usually I'll get a $9 tube of lifetime mold-free (which BTW WILL mold in only about a year even if completely reinstalled properly if the bathroom never gets ventilated and/or curtain/door is always closed let alone if the grout or sub structure is no good and holds moisture). Sinks, tubs, very frequently wet areas = The correct choice are bathroom-specific silicones, no question about that. Putting aside the ease-of-clean up or tooling (Quad actually recommends not tooling), or how polyurethanes etc are stiff especially when cold and will fold a cheap caulk gun if you jam on it and/or ooze out the back. Some mention somewhat hard-to-find but very good sealants. I read many threads on contractortalk, Quad is the most popular suggestion. Long post, but hopefully worth 5 minutes reading.
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