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Question DetailsAsked on 11/29/2016

What is the average cost to replace roof pipes/boots?

I will need three 1 1/2 inch pipes and one 3 inch pipe replaced.

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1 Answer


About $15-30 per boot parts depending on whether you go with the cheapest all rubber or silicone (which I do not recommend except INSIDE bathroom/kitchen vent hoods, or metal cone flashing with rubber boot rim (longer lasting, especially in heavy snow/ice country and also in areas with baking sunshine). Labor (assuming this is a shingle roof) typically about $250-400 to do 4 boots on normal slope roof - likely $100 or so higher for steep roof. If built-up or membrane roofing, probably more like $100 per location minimum, on up to as much as $200 each depending on roofing type - some are a PAIN to get right and require several layers of sealing and roof repair to replace, and of course if built-up roofing commonly requires hot tar use also, so prep time and cost on that. Roofing would be your Search the List category to find well-rated and reviewed vendors for this work.

You said you need the pipes replaced too - I can't imagine why unless a tree came down across your roof and swept the vents off, or a roofer got REALLY violent removing roofing or you had a roof fire, but replacing the pipes from about roofline on up would likely be another $250-400 depending on materials and attic clearance if one has to get into the attic to cut and splice them. Roofer unlikely to do the pipe replacement - probably need a Plumber for that first. Handyman (if you know one you trust to do the roof sealing correctly) would do both the pipes and the roof jacks/boots at same time.

On the boots - if you have metal roof jacks with rubber boot seals on top, with many models the rubber seals can be popped off and replaced without removing the metal part, and there are also slip-over boots that can just nestle down over the existing damaged boot and overlap the top of the jack - but contractor would have to look at it and see, then go get parts, so if using a contractor probably cheaper to just have him bring new ones right off unless quite close to his supply wholesaler or maybe big box home improvement store. But for DIY, replacement would be a possibility. That type looks like this -

Slip-over replacement boot like this - also easy DIY if you find one that fits your existing boot/jack configuration.

Answered 4 years ago by LCD

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