Question about cutting carpet around floor vents in older homes

So I was doing a install last week in a house built in the 50s near downtown. The floor vents are these weird narrow rectangles, not the standard size you see now. I had to cut the carpet around them and it looked rough no matter how careful I was. Do you guys prefer cutting a hole before you stretch the carpet or after? And has anyone else dealt with these odd sized vents that throw off your whole pattern?

3 comments

3 Comments

elliotm577h agoTop Commenter

Before I read this I used to cut the hole first and then stretch, thinking it was faster. But after trying it your way on a job last week the results were way cleaner with no weird bunching around the vent. Swallowing my pride and switching methods on this one.

the_piper12h ago

Cutting before stretch is asking for trouble honestly. You're gonna have wrinkles and puckers unless you're some kind of magician with a knee kicker. Better to stretch it tight first, then cut. The real trick is using a sharp blade and cutting the carpet backing from underneath after you fold it back. That gives you a clean edge instead of frayed fibers. As for those weird 50s vents, yeah they're a nightmare. But don't try matching your pattern to them. Just cut the hole square and center it on the vent. Nobody's gonna notice the pattern mismatch on a floor register unless they're crawling around with a magnifying glass. Half the time those old vents are slightly crooked anyway so just get it functional first.

dylan_brown308h ago

Man, you're speaking my language with that backing cut trick. I've been doing carpet work for years and I still see guys hacking at the face with a dull blade and wondering why it looks like a beaver chewed through it. Folding it back and cutting from underneath is the only way to keep those edges clean, especially on patterned stuff where every fray shows. But I gotta ask, on those crooked old vents, do you ever bother trying to square up the subfloor first or do you just fudge the carpet cut and call it a day? Because I've spent way too many hours fighting a warped floor just to have a stupid register cover hide all my work.