Start shingle installation at the bottom-left corner, working right and upward. Use galvanised steel nails (4–6 per shingle) driven straight—never at an angle—just below the sealant line. Pay close attention to flashing around seams and joints, since this area is the most common source of roof leaks.
Roof shingles can easily be dislodged by heavy winds and stormy conditions, and losing a few shingles might not sound like much of a problem, yet it can result in water entering the internal structure of the roof, which can cause serious damage to the rafters and joists, not to mention the brickwork and plaster. If you are about to replace a few shingles on your roof, here are some useful tips to help ensure a successful installation.
Start Bottom Left
If you are installing shingles on a single elevation, start at the very bottom left, working right and up; this method is the best way to install roofing. There are slate roofing experts based in Sydney who will confirm this, and if you watch a team at work, you will have one installing shingles on the eaves, while another starts at the left side of the bottom row.
Careful Flashing
The flashing is very frequently the cause of a leak, as it covers a seam or joins, where water tends to gather. If you are using lead, make sure that it is hammered into place well. For asphalt shingles, aluminium is recommended for flashing, while lead or aluminium can be used with slate. Installing flashing can be a bit challenging, and it might be better to call in a roofing contractor, who can be found with an online search.
Finish One Shingle Bundle Before Using a New One
There could be slight colour differences in bundles of shingles, and by using them one at a time, you eliminate the risk of having a two-tone roof. If you have trouble sourcing shingles of the same colour, your local roofing contractor will likely be able to find identical ones. There are great articles on how to install asphalt roof shingles, complete with step-by-step pictures.
Use the Correct Nails
Special nails are required when installing shingles, which should be made from galvanised steel that is corrosion resistant. If you are hiring a local roofing contractor to install roof shingles, make sure they are using the correct type of nails. If you are not comfortable working at height, call in a local roofing contractor who can carry out the installation for a reasonable price.
Correct Nailing Technique
You should use at least four nails per shingle, and six will ensure a firm hold, while the nailing line should be just below the sealant line and not above it. Hammer the fasteners straight into the timber, not at an angle, as a misalignment can rupture the sealant.
Of course, one must be comfortable working at heights, and with a little knowledge and the right equipment, installing roof shingles is not beyond the average person. Should you wish to ask a local company to quote, a simple Google search will put you in touch with a local roofer. Most people are fine with replacing the odd shingle; however, a roof restoration would require professional help.
The Internet is a fantastic source of information, and if you would like to watch a few tutorials on how to install roof shingles, all it takes is an online search.
FAQs: How to Install Roof Shingles the Right Way
Where should I start when installing roof shingles?
Always begin at the bottom-left corner of the elevation, working right and then upward row by row. This layout ensures proper overlap and water runoff, and it’s the technique most professional roofing crews follow.
Why does flashing matter so much in shingle roofing?
Flashing seals the seams and joints where water naturally collects, making it one of the most common leak points on a roof. Lead flashing should be hammered firmly into place, while aluminium works well with asphalt or slate shingles.
What type of nails should be used for roof shingles?
Use galvanised steel nails, as they resist corrosion and can withstand weather exposure over time. A local roofing contractor can confirm you’re using the right nail type before installation begins.
How many nails does each shingle actually need?
At least four nails per shingle are required, though using six provides a firmer, more storm-resistant hold. Nails should be driven straight into the timber, just below the sealant line, to avoid rupturing the seal.
Can I install roof shingles myself, or should I hire a contractor?
Replacing a few shingles is manageable for most homeowners comfortable working at height, but full roof restorations or tricky flashing work are best left to a local roofing contractor for a safe, lasting result.
