2nd part

read the 1st part here

HOW MANY NAILS PER SHINGLE?

It depends on the number of tabs.

For example the normal three – tab rectangular asphalt shingles used in USA / Canada need 4 nails: two above the cutouts and two near the edges.

In Europe, mostly four-tab asphalt shingles are used and the number of nails needed is 5/shingles.

More nails are needed:

- in windy regions

- when slopes are very steep, normally bigger than 200%.

In this case two nails are used above the cutout. So 6 nails will be needed for the 3-tab shingles and 8 nails for the 4-tab shingles.

WHAT ABOUT STAPLING ?

Stapling is not recommended in Europe and as far as I know also in USA and in Canada.

Stapling can easily damage shingles.

WHERE EXACTLY TO PLACE THE NAILS?

In Europe we place the nails a little above the sealant strip. The nails are placed 2-3cm above the upper point of the cutout. The nails near the edges should not be closer than 2,5cm from the edges.

On no occasion should the nails be driven into discontinuities and problematic points of the substrate.

HAND NAILING OR PNEUMATIC NAILER?

Hand nailing is more accurate. It does a better job but it is slower and most expensive. If you cannot afford hand nailing for the whole project, at least use it:

- near the rakes

- for the first course at the eaves

- for the ridge and the hips

- for the valleys.

Because hand nailing is more accurate, it will reduce the possibility of wind uplift at this critical regions.

The nails should be driven vertically and flush with the upper side of the asphalt shingle securing it in its position.

If the nail is overdriven, it will harm the integrity of the asphalt shingle.

If the nails are underdriven, they cannot fix / secure the asphalt shingles properly.

In the case that the nails are not completely vertical, they will harm the shingle with their heads. These nails should be discarded and replaced.

CONCLUSION

Learn the right nailing techniques because they are critical for the expected life and behaviour of the shingles.

Do pay to buy the best quality nails in the market.

Chris Strogilis

Civ. Eng. – MBA – DipM

http://maconwaterproofing.blogspot.com/

Asphalt roofing shingles are typically installed by professionals over a special type of roofing felt in an overlapping pattern. Avoid a leaky roof caused by improperly installed shingles by contacting a professional to install asphalt shingles with tips from a home repair specialist in this free video on roof shingles. Expert: Tim Gipson Contact: www.inhisstepsremodeling.com Bio: Tim Gipson is a home repair specialist and remodeling contractor in Franklin, Tenn. Filmmaker: Tim Brown

You’ll find that the following information applies to to new roofs, re-roofing or roof repair. Depending on the task at hand you will employ specific tools and techniques to accomplish your goals. Some of the decisions you make will have to follow municipal guidelines and laws, while others will be determined by your personal preferences. There a many online resources for the details of how to best implement the processes in protecting the life and functionality of your roof system. The roofing techniques involved in laying down a new roof follow a fairly standard process. But first a little background on how a roof is composed.

Roof Composition:
The first layer of your roof system is the sheathing. These are the plywood sheets you can see attached to the rafters in the attic. These provide the foundation upon which the rest of the system is built. The next layer added is called the underlayment. There are a variety of materials used during this technique with the most common being builder’s felt.

This second layer is now required in municipal codes and provides added protection from the elements. The valleys, eaves, rakes and protrusions all get an application called flashing. This technique directs water away from these vulnerable spots. The final step in roofing techniques is laying down the outer covering. These options include many varieties of materials and styles.

How To Address the Repair:
Now you know the basics of how a roof is composed, let’s look at how to address a repair. First you need to identify the problem. Once you have identified a problem, you should research the specific recommendations for addressing the concern. Do not let the problem continue as this will result in more serious damage that will be costlier and more time consuming to fix.

How to you identifie the problem? If you have noticed a leak inside, go to the attic and search for the exact location of the problem. You can use a screwdriver to check the wood for rot in determining what degree of repair is needed. If you must replace shingles or tiles on the roof, learn the specific techniques for your particular materials.

When you find damage, you need to remove the damaged shingles first thing. If it is raining out or if the weather is bad, you may want to put a few shingles over the existing ones until you can get on the roof and do the repair correctly. Keep in mind this is a temporary fix and the following steps should always be done as soon as possible.

Once you have removed the old shingles, you need to make sure the tar paper is not ripped or damaged as well. If it is, you need to replace that before you continue with the roof repair.

When you do have some damage, you want to take care of it as soon as possible. This is going to keep the rest of the roof from sustaining more issues that may need to be taken care of. This is also going to keep the interior of the house free from water leaks and other damage that is associated with having a poor roof.