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Roofing - A Guide To Installing Corrugated Iron Roofing
Corrugated Iron Roofing is durable, lightweight and easy to install. If a few extra precautions are taken with handling and fixing, the finished product will greatly be improved.
Over half of the mistakes made while constructing a corrugated iron roof can be traced back to incorrect storage or handling. The iron has to be handled and stored correctly because the surface is very easily damaged.
Leave the metal roofing at the manufacturers until you are ready to start installing it. Aim for delivery the day before roofing starts. If the roofing iron arrives before you are able to fix it, you must ensure it is kept bone dry. It is a common mistake to assume that because they are roofing sheets, they can withstand moisture. If the roofing sheets are stacked together and they get wet, they will stain. White rust forms on the coating and it is very difficult to remove. If your roof sheets do get wet, separate each individual sheet. Use bearers to allow airflow around the metal. This will prevent the corrosion.
Gently does it
As for handling, care needs to be taken in order not to damage the paintwork. Sliding sheets across one another will damage them. When separating the roofing sheets, you should lift them cleanly upwards without scratching the one underneath.
Spend more money
Installing a roof can be time consuming and costly. The last thing you need is to have to keep spending money on maintenance. If you scrimp on the cost of fasteners you will forever be replacing loose nails and fixing leaks. Choose good quality roofing screws. These will provide a more secure fixing and last as long as the roofing iron. It's important not to over tighten the screws. Just tight enough to lightly compress the neoprene washer is sufficient.
If you pre-drill the holes for your roofing screws on the ground, it will be safer and give the roofing a neater appearance. This is only possible if the purlins run parallel to the eaves and the roof is reasonably square.
Using a quality drill bit makes the job easier. The drill bit should be slightly larger than the diameter of the roofing screws. This will prevent stress fractures as the sheets expand and contract.
Take accurate measurements of the purlin centres from the eaves and mark the roofing sheets ready for drilling the screw holes. Don't forget to add the drop into the gutter to your measurements, usually about 50mm. It's better to use chalk for marking corrugated roofing iron because pencil may damage the surface.
Cut to the quick
Cutting corrugated iron roofing sheets with a disc cutter makes the job easier and faster. Unfortunately, it also damages the roofing iron beyond repair. Hot particles of steel imbed themselves into the surrounding metal allowing it to corrode. Nibblers will do the job adequately as long as you are careful with the swarf. It's preferable to cut the sheet with hand shears or best of all power shears. A better finish can be achieved if you make two cuts. The first cut 50mm away from your finished edge allowing you to neatly trim to the line with your second cut.
If you find scratches on your roofing during installation resist the urge to paint it. The paint may well look like a good match from the tin, but after a couple of seasons weathering the patched paintwork will stick out like a sore thumb. Contact the manufacturer and ask for advice on making repairs to their product.
Laying the roofing
Before you start laying the roofing sheets check that the roof is square. If the roof is not square you can still achieve a good finish if you even out the difference, between the two barges. The difference will then be less noticeable as it will be covered by the barge flashing. Run a string line along the eaves, 50mm into the gutter and it will provide you with a straight edge for the roofing sheets.
On completion it's important to clear the roof of any loose swarf. Tiny particles of iron left on the roof will rust and ruin the surface. A soft brush will do the job or ideally a leaf blower can be used.
A well installed corrugated iron roof will give years of maintenance free service. If you take a little extra care with the preparation and fixing, you will achieve a superior finish.
How To Stop Roof Tiles Being Blown Off
1. What should I look for when selecting a roofing contractor?
Since the roof you install is only as good as the contractor who installs it, choosing a qualified roofing contractor is essential to having a healthy roof that lasts a long time. Skilled workers will determine the outcome of a roof replacement project. The best contractors have many years of experience in installing multiple kinds of roofing systems.
Another way to test the quality of the contractor and business is to ask for references that have had complaints. Since it is possible for any roof to have a problem, it is important to know how the contractor deals with past clients. A good contractor makes a commitment to their clients and the work they have done.
2. How much roof maintenance is needed after installation?
Since all roofing types and materials need different amounts of maintenance, there is no simple answer. Routine maintenance can be anything from keeping your drains and gutters clean to extensive work. Maintaining your roof is your responsibility, so whichever material you choose; make sure that you will be able to fulfill its maintenance needs.
For instance, asphalt shingles and wood shakes and shingles need to be maintained by routinely cleaning out gutters and trimming back tree branches. Replacing damaged shingles and keeping moss or algae off of the roof are ways to ensure longevity.
3. How much does a new roof cost?
This question also has no simple answer since replacing a roof varies on the materials and installers you choose. You can usually get a free estimate from a contractor. Before agreeing to a price, make sure the following considerations are made:
- the square footage of your roof
- roofing material you choose
- if you are keeping or removing your existing roof
- any permits needed
- the amount of labor needed to get the job done
4. How long does it take to replace a roof?
Replacing a roof usually requires a lot of work. The process may take a few days or a few weeks. Remember that bad weather can delay installation. If you are repairing rather than replacing your current roof, it may take less time.
5. How should I prepare for the installation of my new roof?
There are a few things you should do before the installation process begins. Since hammering can cause vibrations inside your home, take loose items off of your walls and shelves. You should also make sure your driveway and surrounding area is clear so the workers have space to move materials directly to your roof. It is a good idea to park on the side of the road instead of your driveway.
Make sure you can provide electrical power outside. In any case, contact the installers if you have any questions.
6. How long will my roof last?
Roofing, like any other material, is likely to deteriorate with time. A new roof can last anywhere from 10 to 40 years, although 20 years is the average. You can lengthen the life of your roof by choosing the right contractor for the original installation and keeping up with any maintenance requirements. Even if you follow these recommendations, there are factors you can't control such as weather elements.
7. When is the best time of year to install a roof?
The best condition for installing a roof is when the temperature is above freezing and there is minimal chance of snow and rain. Since you cannot predict bad weather, always know that installation delays may occur.
8. How do I know when my current roof needs to be replaced?
Different roofs deteriorate at different rates. If you see any of the following signs, it is time to consider replacing your roof:
- Leaks in numerous places
- Continuous leaks, even with repairs
- Problems return soon after repairs
- Repairs do not fix the problem
Roofing is one of the most important investments you can make. Improper, aged or substandard roofing can lead to a host of other more expensive problems. If you are selling your property, a well-chosen roof can yield a solid return on your investment. Whatever your budget or design desires, whether you want architectural shingles, tile roof installation or something in between, a Roof Master consultant will work with you to make it a reality.
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