10 Questions for . . . Robert Lenney, Gutter Expert
In this installment of 10 Questions for . . . , Associate Editor Gian Trotta talks with Robert Lenney, a cofounder of California-based Gutterglove and a former certified arborist. In December 2007, Lenney and partner John Lewis received a patent for their Gutterglove gutter-guard system, which uses a fine stainless-steel mesh stretched across anodized aluminum panels.
You've cleaned many gutters in your time. How should a homeowner start planning the task?
Always think about safety first; don't just go jump on the roof and start tossing out handfuls of gunk. Pick a day when it hasn't rained for a few days; if that's not possible, wait until midmorning, after the sun has dried out the roof.
Do you recommend any special clothing?
I recommend wearing durable pants like jeans and a long-sleeve shirt. Tuck your shirt into your pants—when you're up on a ladder or on a roof, balance is everything, and if a loose end of clothing catches on something, it can cause a fall. Tucking the bottom of your pants into your socks also protects against wasps crawling up your pants leg.
I certainly agree about the wasp hazard; I got stung on my last gutter-cleaning foray. What about gloves?
Leather rather than cotton or rubber gloves give better protection—there are a lot of sharp edges in a gutter. Also, you might encounter some very distasteful substances—pigeon droppings are a prime example—that can cause bacterial infections or leave a lingering smell on your hands. I also recommend some kind of eye protection, either goggles or safety glasses.
When it comes to ladder safety, what precautions do you observe?
There are some precautions to observe with all ladders. Try to set an
extension ladder so about 3 feet of it extends above the roofline.
While the ladder might feel secure when you step on it, there might be
a gopher hole or loose soil under the leg and it could cave in as you
climb up. So very lightly jump up and down a few times on the first
rung to seat the ladder well before climbing up. If the ladder has a
shelf, you can keep a five-gallon bucket on it, securing the bucket with a lanyard.
Inspect the ladder carefully to make sure it's working properly. Be sure the hinge arms on a stepladder and spring hooks on an extension ladder are fully locked. Check that the ladder's rungs and sides aren't split or bent or loose and that screws and bolts are secure—ladders held together with rivets are usually better in this regard.
(Here are some additional guidelines from the experts at Consumer Reports: Ladders are categorized by weight ratings; we recommend that you get a heavy-duty type 1A. For gutters above 17 feet you should use a conventional extension ladder. Choose a fiberglass or wooden ladder where electricity is a factor, and remember that any ladder can conduct electricity when it’s wet. Extension ladders should be set up with the base 1 foot away from the wall for every 4 feet the ladder reaches up—that's 3 feet at the base for a 12-foot ladder, or roughly a 75-degree angle. For lower gutters, you can use a stepladder or multiuse ladder. No matter which ladder you have, always follow manufacturers directions for setup. For more ladder-safety advice, read our safety tips.)
What other specialized tools should be used?
Don't use that heavy metal planter scoop from your garden kit or an old spatula. They can scratch steel gutters and give rust and opportunity to form. They can also damage the caulking used on seams of other types of metal gutters.
Those plastic orange gutter scoops sold in stores have one nice quality: Their tips are thin and flexible, so they conform to the contours of your particular gutter style. The downside is they're not as strong as a metal tool, so we go through a lot of them in a season. But the average homeowner should get a few years out of a scoop.
I've seen people use leaf blowers to clean gutters. Are these devices effective?
We do use backpack leaf blowers to remove debris from gutters, but
that's best left to very fit and experienced professionals. (For more
about cleaning gutters with a leaf blower, read "A Leaf Blower Attachment.'" )
A better option is a garden hose; it's really important to use a nozzle with a squeeze-type handle.The pressurized stream lets you clear out a long length of gutter out, cutting down the number of times you have to move the ladder. Plus, you can adjust the stream with just one hand, unlike some other nozzles. And lastly, that style of handle lets you hang the hose on the gutter itself. A small rake also comes in handy to clear debris from the roof near the gutter.
After you're done with the horizontal section of gutter and come to the opening for the vertical leader/downspout, what's the next step?
You try the easiest, softest, nondamaging unclogging methods for the
leader pipe first. If water has been backing up, probe downwards with a
short stick, and if that doesn't dislodge the clog, then gently feed
the garden house down into the downspout to clear it out. If your
leader downspout goes into a dry well, detach it from the downspout so
you won't force debris into it.
Can the lightbulb-shaped mesh inserts that go in the cup connecting the gutter and leader like the one pictured at right help?
Those are helpful if you don't want a gutter guard, but the downside is
they clog frequently. You will have to go up and unclog it every few
weeks—and that's one reason we're in the gutter-cleaning and
gutter-guard business. For every homeowner we can keep off a roof,
that's one less person whose going to take a chance at falling.
Going back to your background as an arborist, how can landscaping help reduce the amount of stress on gutters?
There
are a few things you can do, like planting smaller trees near your
house. But if it boils down to a choice of having a beautiful landscape
and having to clean your gutters or having a less attractive landscape
and not having to clean you gutters, I'd vote for the beautiful
landscape—you want to design your property as you truly want it. If you
can't clean your gutters yourself, then you can use a service or a
product like ours.
Gutter cleaning is one of the least appealing seasonal home-maintenance tasks. Why is it so important to keep your gutters clean?
Aside from protecting your home's structure, keeping your gutters clean
will cut the risk of fires, a real concern if you live in a place where
windswept fires occur, like Southern California. Debris sitting in your
gutters and adjoining roof sections can dry out and catch airborne
sparks from wildfires.
Essential Information: Find out more tips and tricks for safe and effective maintenance in our fall lawn-and-yard checklist and a special read-only Q&A with our yard guru Peter Sawchuk.

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Posted by: Tim | Oct 6, 2008 11:25:39 AM
I use a 12-gallon wet/dry vac to suck all the debris out of my gutters on the first level of my colonial and my garage and breezeway. Home Depot sells an elbow that I installed on the vac and it makes it so much easier. I don't even have to use a ladder! I installed mesh screening on the second level and clean them out every few years with a garden hose.
Posted by: Robert Lenney | Oct 14, 2008 2:38:16 PM
Hi Gian,
I wanted to mention another tip on the caution of cleaning gutters around power lines. If anyone has any questions, feel free to contact me anytime through my website at www.Gutterglove.com. Here it is:
Power line hazard: When cleaning gutters around a power line drop cable from the power pole to the roof of your home, do a visual inspection of the electrical cable where it connects to your home to make sure the protective wire insulation hasn’t ‘rubbed’ off through the years of wear-and-tear by the weather and nearby trees. If the cable has been damaged, do not try to repair it yourself, call a licensed professional electrical contractor to fix it.
If it’s raining and there is an electrical wire problem, do not attempt to clean out your gutters until it’s fixed. Water is an excellent conductor of electricity.
Whether it’s raining or not, it would be a good idea to have the electrical wiring fixed before cleaning out your gutters.
It’s not advisable to use a metal ladder near power lines when cleaning out your gutters. Hence, it’s not a bad idea to use a fiberglass ladder in this case.
Posted by: John Ely | Nov 7, 2008 7:44:05 PM
Hi Robert,
A product has been recommended to me called Rainflow (www.fainflowusa.com). It's a gutter pad/matrix that's inserted into the roof's horizontal gutter; it's billed as being porous enough to allow water to soak right through and travel over to and down the downspout, but keeps the gutter from plugging up and needing annual cleaning. Any experience with this or similar products? Thanks very much, John
Posted by: Carey Walmsley | Nov 18, 2008 6:21:07 AM
Hey John,
My husband was out cleaning the gutters this weekend and the ladder slipped out on the wet cement. Thankfully, he was able to land on his feet and wasn't seriously hurt. I've been looking for a gutter guard to keep him off the ladder. My neighbor has these guards that I've never seen before.
http://www.guttersupply.com/p-gutter-protection-rain-drop.gstml
He just put them in this year and doesn't know how well they really work yet. They were kind of expensive but seem like a good idea. And I would think that they need to be removed every few years to get in to clean the gutters out - so maybe not worth the hassle. Have you or anyone reviewed this product?
Posted by: Al Feldner | Nov 23, 2008 7:14:17 AM
I use a pressure sprayer with hose extension to clean out gutters that are JAMMED with sycamore leaves, locust pods and needles in fall and spring. I'm never done.
Posted by: Robert Lenney | Jan 8, 2009 3:35:54 PM
Hi John Ely,
Sorry I didn't get back to your comment, I didn't read it until just now. In regards to your question about Rainflow gutter guard, personally I have never used it. But I did go to their website and check it out. I have to tell you, I have never been a fan of a fiber material with UV protection gutter guard.
I had alot of experience with another gutter guard that used a similar fiberous material claiming to have UV protection, and in less than two years it disintegrated in the gutter. I felt so bad for the thousands of customers of this gutter guard across the country, because it failed on all of them. The original name of that product was Leaffilter 1.0, and is no longer in existence. The inventor has since come up with Leaffilter 2.0 and it's definetely better than the first one, but still has design flaws. I know this from personal experience.
Hope that helps.
Robert
Posted by: Linda | Jun 28, 2009 4:36:55 PM
As a member of my condominium board I am looking for a gutter guard that works. At the moment we pay someone to clean out the gutters on 20 three story townhouses twice a year. I just saw This Old House install gutter guard foam inserts on a really high-end house. Do you have any familiarity with this product?
Posted by: JeanK | Jul 15, 2009 7:16:39 PM
Hi Peeps, Great article on gutters, gutter maintenance, and use of tools for cleaning gutters. I would also like to let your readers know that a new, American Made, gutter cleaning tool was invented, manufactured, and distributed in the USA and its called the Gutter Clutter Buster. This very durable, pvc tool attached to your wet/dry vac, 2-1/2" hose and vacuums out all debris, water, bugs, mosquitoes that breed West Nile Virus, bird nests, leaves (wet or dry), roof gravel and all that other gunk that sticks inside your rain gutters. No need for ladders, scoops, water, blowers, or other equipment to get them squeaky clean and all while you are firmly on the ground. The hardest part of cleaning gutters will be emptying your wet/dry vac container. Put your leaves into your compost pile, use for mulch in your garden or around your flower bed to also help conserve on water. Be safe while you save money and water to get a nasty job done in 1/2 the normal time. Keep your gutters clean and your will enhance the value of your home by not having to constantly do repair maintenance on sagging gutters. Keep the water and snow out of your gutters! You might want to visit the website www.GutterClutterBuster.com and see for yourself. Then you decide how you would rather keep those gutters clean with expending less energy. Stay well, stay safe, and God Bless America.
Posted by: Bernard White | Sep 7, 2009 4:44:10 PM
I am very disappointed in your October report on the robotic gutter cleaner -- a device that is so fundamentally flawed that testing it is a waste of resources. I am equally disappointed in your selection of Robert Lenney as your expert in gutter guards -- not because he is not qualified (he is), but because he is the person behind one particular gutter guard (GutterGlove) and cannot be impartial about other such devices. Instead of testing a useless gutter cleaning robot, when will Consumer Reports test the full range of gutter guards on the market today?
Posted by: Flo | Oct 24, 2009 7:55:06 PM
Has anyone tried something called LeafGuard? I just saw an ad on TV for it and looked at the website www.leafguard.com. It's supposed to work without mesh covers so wondered how well it really works. Does the rainwater really all go into the gutter? I can see how the debris would slide away from the gutter, but it almost looks like most of the rainwater would go with the debris and not actually into the gutter itself. Any comments?
Posted by: Michael D. McLaughlin | Oct 31, 2009 10:06:20 PM
Yes, I'm wondering too when will Consumer Reports review the various gutter guards on the market. As a subscriber I'd like to see your recommendations soon! Thank you!
Posted by: LDC | Nov 1, 2009 5:01:23 PM
I second the comment: Why haven't C/R tested the vast aray of gutter guards, yet they tested this Robot? This is the 2nd or 3rd time I came to C/R to get some info on Gutter Guards and now I only find the robot. Everyone who owns a home should have gutters, right?. If you have gone to a Home show or web sites, every company thinks theirs are the best. It is time of C/R to get to these products and make some recomendations for their subsribers.
Posted by: Bill | Nov 12, 2009 10:06:55 PM
I also would like Consumer Reports to review the many expensive gutter devices out there these days and come up with recommendations.
Posted by: Ryan | Nov 16, 2009 2:58:36 PM
This past summer I read that Consumer Reports would have a review of gutter cleaning systems in the October 2009 issue. I was dismayed to finally get the issue and discover your report only included the gutter robot.
I guess we'll have to wait another year, until next fall, to receive a report on gutter guards.