Sooner or later, Calgary AB homeowners will need to know how to fix a leaking roof from the inside. True enough, the leaking roof repair cost is insignificant when it protects the roof from further damages.

Sometimes, extremely strong rains will worsen the vulnerabilities of your Calgary AB roof. In this situation, you might ask yourself “my roof is leaking what should I do?” If you know how to repair a shingle roof, then you can definitely learn how to fix a leaking roof from the inside. In fact, we believe you can execute it effectively.

In this post, you’ll know more about

  • What you’ll need for patching a roof leak
  • How to map and find the leak source
  • Create a temporary solution inside of the house
  • Fixing “ghost” leaks through minimal external roof repairs
  • And providing permanent fixes for your leaking roof

Fixing a Leaking Roof From the Inside

What You’ll Need to Patch an Internal Roof Leak

If you want to learn how to fix a leaking roof from the inside, you’ll need to have the right supplies and equipment. Fortunately, you can find most of these in your local hardware or roofing supplier shop.

True enough, you have multiple options for sealing your roof. You can use a ready-made leak repair sealant to patch the internal roof leak sources. On the other hand, you can use repair sprays, which liquefies like sealants upon your use.

Overall, you’ll need plenty of leak-catching buckets, asphalt cement, spare roof shingle pieces, a prying tool, and some roofing tar.

Here are all of the tools and items you need once again:

  • Get a roof leak repair sealant
  • Use a roof leak repair spray
  • Have a prying tool ready
  • Buckets
  • Asphalt cement
  • Roof shingle pieces
  • And some roofing tar
damaged drywalls due to internal roof leaks

Your prying bar is useful for peaking into or removing sections of bloated drywall to prevent further leak-caused water damages from happening.

Mapping the Roof Leak

To begin mapping the roof leak, head inside your attic. For properties that require flat roof leak repair, you’ll need to head to the top floor of your property.

How to fix a leaking roof from the inside for either sloped or flat-roofed property? You’ll need to follow the path of the water as it drips inside your home.

If you have a sloped roof, the leak could travel a distance away from its entry point on your internal ceiling. True enough, the leak stains are a clue to finding the roof leak sources.

In some cases, you might find it difficult to find the roof leak. If you can’t locate it, you can skip to the section that helps you provide minimal external roof repairs below.

stained ceilings and walls due to internal leaks

Stained ceilings and walls can give clues to internal roof leak source locations.

Temporary Leak Patches

This is the meat of all “how to fix a leaking roof from the inside” instructions.

Once you find the leak, take out your sealant, spray, or roofing tar. Indeed, wait until the rain weakens or subsides. Then, use a cloth to dry the leaking areas and apply the roofing sealant.

Alternatively, you can use the sealant spray to cover the hole. Next, use a straight edge to spread the substance evenly.

One final alternative to sealing this leak is your roofing tar. Use a putty knife and spread the tar into the leaking hole. Next, place a piece of cut shingle onto the tar.

Lastly, you can use more roofing tar or asphalt cement to seal the edges of the temporary patch.

Take note that this is only a temporal solution to the leak problem. True enough, the patches have no guarantee they’ll last for more than a single strong rainstorm. So, keep your buckets still in place until you can call for professional help.

Indeed, you can expect roof leak repairs to be expensive. However, if you have insurance, you can definitely make a claim and virtually pay for nothing at all!


a bucket of water outside the house

You’ll need plenty of buckets to catch leaks. Make sure to empty the full buckets when they get full outside your house!

How to Fix a Leaking Roof From The Inside: Necessary External Repairs

Although our instruction focuses on how to fix a leaking roof from the inside, you’ll need a solution in case you cannot find the internal leak source.

Therefore, it is necessary to provide external roof repairs from the outside of your Calgary AB property.

You’ll need a plastic sheet or tarpaulin to do this. True enough, you can find specialty plastic roof coverings from supply shops. However, in case of emergency, these two materials will work effectively.

Unfurl the Roof Plastic

First, unfurl the roof plastic or tarpaulin. True enough, years of storage will make the edge of the material curl inward or outward.

Unroll the plastic or tarpaulin and use a heavy book or straight-edged material to flatten it. In fact, take ten minutes to iron out the material.

Once it straightens out, cut the tarpaulin to length. Take a measurement of the square of your roof from the inside. In addition, give allowances for overlaps to guarantee a secure installation on top of your roof. Then, cut the material according to the figures you obtained.

Attach it On Your Roof

To attach the plastic roof wrap or tarpaulin on top of your external roof, you’ll need the following:

  • Ladders
  • Rubber-soled shoes
  • Heavy stones or concrete blocks

Make sure to perform the installation procedures only when there’s no storm and lightning present. Additionally, always wear your rubber-soled shoes or boots to prevent you from slipping on the ladders and your roof.

First, bring up the heavy stones or concrete blocks you’ll use to attach the cover on your roof. Additionally, keep in mind you’ll need numerous weights. This prevents the material from obtaining lift from strong winds.

Then, bring up and unfurl the plastic roof wrap or tarpaulin on your roof. Next, use your knees to hold down a material section and place the weight on that area. Then, do the same for the other sections.

While you’re on top of your roof, observe your gutters too. In some cases, gutter overflow is the main cause of internal roof leaks. True enough you have your repair materials at the ready. However, de-clogging your gutter and scheduling it for repair can help prevent further leaks.

sections of a clay tile roof removed for replacement

For massive roof leak damages, you might need to have it completely replaced. Make sure to use reputable contractors in doing so.

Providing Permanent Repairs to Your Leaky Roof

Keep in mind that these two types of repairs can only provide ample protection for your roof. True enough, you’ll need a trusted contractor to help you provide permanent roof leak repairs.

These temporary patches can only last for a week of extreme rainfall or weather. Indeed, any further and you’ll need to seal it again. Therefore, contractors can remove the leaky roof section, re-install it, and even repair your internal roof.

In case you haven’t found a trustworthy Calgary AB contractor with in-depth experience with roof leak repairs, you can depend on us from No Payne Roofing to do the job. With decades of experience installing, repairing, and restoring roofs, we are confident in giving you the best roofing services possible.