Replacing a clapboard – DIY roof repair

10 Contractors announces its DIY guide with step-by-step instructions for safe shingle removal and replacement.

Houston, TX, May 4, 2022 –(– 10 Contractors, of Houston, TX, announces its step-by-step, do-it-yourself, shingle replacement and roof repair “how to” guide. They offer a variety of property restoration and maintenance services in the Houston area, such as roof and wood fence repairs, residential concrete services, asphalt waterproofing, and more. They can be found at

Warning: Working on a roof is dangerous and can cause serious injury or death. It is always best to use safety equipment and have a helper present.

With that warning out of the way, let’s move on…

So you want to fix that eye sore from a roof shingle that’s loose, worn, or blown off by a previous storm. Here are some step-by-step instructions on how to do this without seriously injuring yourself.

Skill level required:
– Advanced handyman/DIY skills

Required roofing:
– Matching shingles
– 10 Us Roofers Cement
– Roofing nails

Roof tools:
– Hammer
– Flat crowbar
– Tool Knife
– Caulking gun
– ladder

Safety Equipment:
– Lanyard safety harness attached to the roof via anchor.
– Bungees/Tie-downs to secure the ladder to the roof.

Additional roofing supplies:

If your roof is steep and not walkable, you will need the following roofing supplies:

– 3 roof connections
– 1 2x10x10 wooden plank
– 16D Nails
– Extension ladder
– Roof flashes
– Metal shears

Step-by-step How:

1. Place the ladder

Set up your ladder safely and ensure the legs are firmly planted and stable, with the ladder extending 2 to 3 feet past the roof and being secured to the roof with nails and bungees/tensioning straps.

After the ladder is set up, stand straight in front of the ladder with the tip of your feet at the base of the ladder, lift and extend your arms straight in front of you. With your arms extended, you should be able to contact the ladder anywhere from your fingertips to the middle of your palms.

You can also use the 4-to-1 rule: for every 4 meters of ladder/roof contact, place the ladder legs 1 meter away to get a safe angle of inclination of the ladder.

2. Is the roof too steep to walk on?

If the roof pitch is less than 8/12 and you can walk and work on the roof safely and confidently, proceed to step 4.

If the roof is steeper than a 7/12 pitch or if you cannot safely walk and work on the roof, use a safety harness attached to a roof anchor.

Follow all instructions that come with the safety equipment you are using.

3. Roof connections

If the roof has a slope of 8/12 or more, it is best to use jack stands for safety.

You have 2 options to use a roof jack:

Option 1:
Mount the jack to the roof using 2 16D nails to secure each jack to a rafter, keeping the jacks between 3 and 4 feet apart. Note that spacing between rafters in the center can vary from 16″ to 24″ at the centers.

Option 2:
Mount the roof jack to the roof deck using 3 16D nails to secure each jack; keep the jacks 3 to 4 feet apart.

Install a wooden plank on the roof supports and fasten each plank to the supports with a nail in the hole in the front of the support. This prevents the shelf from rolling over or shifting.

If the work area is out of reach, place an extra extension ladder or roof ladder on the plank, lay it on the roof terrace with the feet of the ladder either in the middle of the plank or between 2 of the jacks.

Once the ladder is in place, put 1 nail for each foot and 1 on each side to keep the ladder from slipping or moving off the shelf.

Note: When mounting roof jacks, the lifting capacity of the jack depends on a combination of the mounting option used and the condition of the roof trusses and the deck. Never attempt to work on a roof if the rafters or deck are rotten or damaged. Never use roofing nails to secure jacks, as roofing nail heads have low shear strength and can break off.

When conditions are acceptable and jacks are properly installed, roof jack stands will have a safe load capacity of 250 lbs. per 8 foot section of the shelf.

If you have a bundle of shingles next to you while working, place it on the roof terrace and use the plank to keep the shingles from sliding off the roof.

If you are working on a roof steeper than a 10/12 slope, use commercial grade roof jacks as they are stronger, more stable and have a greater load capacity.

4. Remove clapboard

Work with a crowbar under the leading edge of the clapboard you’re replacing; Carefully pry up the clapboard sheet.

Work from one end of the gravel to the other, disconnecting the gravel under the one you’re replacing.

Then disconnect the tabs on the 2 shingles that are just above the shingles you are replacing; now use your crowbar and reposition it under the clapboard you are replacing.

This time, carefully work your bar all the way under the gravel; and to the location of each nail that has been inserted, with a gentle motion, use the rod to pry the clapboard and the nail up to loosen the nails one at a time.

With loose nails, using one hand, carefully lift the clapboard tabs from the clapboard you are removing. This gives you access to the loose nails. Use the crowbar to pry out the nails one by one.

To remove a clapboard that is being replaced, you will need to remove the nails from the clapboards just above it.

Note: Be careful not to pry too hard when using your pry bar or you will damage the surrounding clapboards. Take special care with old roof shingles or in cold weather, as shingles are easier to damage. If any shingles are damaged, replace them.

5. Install replacement clapboard

– Slide the clapboard into place.
– Drive nails into the shingle using the nail pattern of the shingle you removed.

6. Inspect roof vents/pipes

Now is a good time to inspect roof vents and plumbing as these are the most common leak points on a shingle roof. Inspect pipe sleeves, mounting nails, and for cracks.

If the pipe flashing is in good condition, but the rubber gasket is questionable, install a rubber gasket collar over the pipe. Apply plastic cement to the pipe base, slide the collar over it and apply a ring of plastic cement to the top of the gasket.

If necessary, apply a little plastic cement to exposed nails.

7. Apply plastic cement

Now that you’re done, you may have holes from the nails you used to tie down your ladder or from the roof connectors you installed.

If a nail hole is exposed, cut a 4×4 or 4×6 inch piece of metal using a saw blade, apply some plastic cement to the bottom and top of the flashing, then slide the flashing under the clapboard to prevent that there is water through the holes in the gravel. Once in place, press the clapboard to create a good bond.

10 Contractors can be found at

Contact details:
10 Contractors
David Tene
Contact by email

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