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    How To Prevent Leaks By Fixing Damaged Shingles

    We’ve experienced several storms this summer that have caused wind damage to roofs in the region, so it wasn’t a big surprise when I recently noticed discoloration to a bedroom ceiling in one of my properties caused by a slow leak in the roof. I decided this would be an excellent opportunity to share a quick & easy roof repair tip for patching damaged shingles and preventing ongoing water damage to your property’s interior. Although this method is really just a temporary fix to prevent further damage until the roof is professionally repaired, I have used this technique to address small areas on several roofs in the past and the patch has ended up lasting several years without recurring issues.

    1) Remember, I never told you to get up on that roof!

    Roofing shingles are more susceptible to damage during the heat of the day so I try to limit walking on a roof to early morning or evenings when the softened asphalt based materials regain their rigidity.

    2) Identify the damaged area

    Some of the most common minor roof leaks are the result of broken shingles and cracks in tarred areas around plumbing vents and chimney flashing. I initially expected the chimney to be the culprit due to it’s proximity to the water discoloration in the bedroom, however a quick visual scan of my roof revealed one missing shingle tab and one damaged tab just two rows up from that area. Since I was already on the roof I went ahead and checked all previously tarred areas around the chimney and kitchen / bathroom plumbing vents just to make sure. The chimney and bathroom vent pipe were fine but the small pipe venting the kitchen sink had obviously developed a gaping crack that needed to be filled. (see photos 7 & 8)

    3) Patch the nail holes

    This house was roofed with 3 tab shingles. The top half of each shingle is typically a darker shade than the bottom half which is divided into the 3 tabbed sections that are visible after installation. Despite the style of shingles used, they are always applied in rows beginning at the bottom edge of the roof just above the guttering and overlapping in half widths. Each row is offset so that the seams are staggered. This adds strength by creating a woven effect that minimizes the likelihood of entire sections blowing off during high winds. Each shingle is typically fastened into place using an average of 3 – 4 nails along the tar line. The tar line bonds the lower lip of each shingle tab to the upper half of the previous row of shingles and also seals the area around each nail. When a tab is broken off you will likely see exposed nail heads. (See photo 1) The upper half of the lower shingle will still provide a layer of protection, but since the nail punctures are no longer shielded by the overlapping tab this allows just enough moisture seepage during hard rains.

    I began by applying a large dab of roofing tar (available at any hardware store) with a caulk gun to the nail heads.

    Steps for patching leaky roofs
    1) Identify damaged shingle | 2) Apply tar to broken edges | 3) Apply tar to nails & tab | 4) Press tab firmly into place

    4) Re-bond the broken shingle

    Next I applied a generous amount of roofing tar along the edge where the shingle broke off. Then I applied another bead along the old tar nail line. (See photos 2 & 3) Regardless if I was re-bonding the original broken shingle or patching in a new tab, my next step was to apply a bead of tar along the top edge of the replacement tab and about 1/3 down the edge of both sides. I then pressed the tab into place, carefully matching the broken edges as close as possible while insuring the tab was well bonded. The pressure forced some of the tar out from under the edges of the tab. I added another small bead of tar along the top edge and smeared it out flat with a puddy knife. Rain will now run down the shingles like water off the layers of overlapping feathers on a duck’s back. This patched in shingle is actually stronger now than it was originally as it is basically glued to the roof with waterproof tar.

    Easy tips for fixing roof leaks
    5) Smooth with puddyknife | 6) Bond damaged tab | 7) Crack in vent boot | 8) Filled crack & smoothed

    5) Patch any cracks or holes around plumbing vents

    As you can see in photos 7 & 8, I filled the large crack around the boot for the sink vent with this same roofing cement product and smoothed out the seam to insure a good patch.

    Tracey Miller

    ☆ Tracey Miller is a Realtor & GOOGLE Street View Trusted Photographer providing property listings, curated content, marketing services, and local business reviews for the Southeast Missouri & Southern Illinois region. Any views or opinions expressed within ratings, reviews, or commentary pertaining to blog posts, social media posts, property listings, or business profiles are those of Tracey, featured authors, and/or users of www.LiveLocalListings.com and are not endorsed by or reflective of any of the businesses or professionals profiled on this website or their representative(s). The business profiles featured in the directory section of this website are for informational purposes only and do not imply an intent to sell. ★ Contact Tracey via any of the options on this website for additional information or to tour any property listed for sale in Southeast Missouri or Southern Illinois. Follow Tracey Miller on your favorite social media platform... he's everywhere @FORSALEbyTracey.

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