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My old boss in Phoenix swore by using a 12-inch drywall knife for spreading seam adhesive, and after ruining a seam on a $2,000 wool carpet last month, I finally realized he was dead wrong.
The rigid blade doesn't give you the feel for how much adhesive you're laying down, and I ended up with a hard ridge that showed through the pile after it cured... what's your go-to tool for a smooth, invisible seam?
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oliviabennett6mo ago
Yeah, that's a classic case of using the wrong tool for the job. A flexible 6-inch knife gives you way more control over the adhesive bed. You can actually feel the carpet backing and avoid those rock-hard ridges.
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martinez.diana6mo ago
Ever think about the carpet itself? @oliviabennett is right about the flexible knife, but with that expensive wool, the backing is so different. I had to learn that a dense woven backing needs way less glue than a synthetic mesh. I test the spread on a scrap piece first now, because even a perfect thin line can seep up and stain the wool fibers if you're not careful.
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burns.ruby6mo ago
That's a really good point, @martinez.diana. So when you test on the scrap, are you checking how fast the glue soaks in, or just looking for any color change on the surface? I've seen that seepage happen almost right away with some wool blends.
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