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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.
9 Things To Do When Your Roof Leaks
The term "roofing supplies" covers a wide range of materials and items needed for roof construction and maintenance. This includes not only shingles but molding, lumber, pipes and vents, roofing cements, ladders and all the necessary tools, even roofing nails.
Starting at the top, let's consider the roofing material. This is considered the roof proper and includes wood shingles, ceramic tiles, asbestos shingles, metal roofing sheets and tiles, rubber roofing sheets and shingles, and more. Location is a prime concern when selecting material, so that the roof will stand up to the local elements and issues that impact it.
Lumber is used in a roof primarily as the support structure or frame. This generally consists of a triangular truss and a lattice of beams. The frame serves as the base which is laid over the top. Lumber is used for other elements including the cornice, part of the frame that hangs over the wall, the fascia, or underside of the cornice, the eave, beam ends of the wood frame that allow water to drip away from the roof, and the soffit, or underside of the eave.
Pipes and vents protrude from the roof. They help the house breathe, and are also the escape routes for smoke from a fireplace or cooking hood, as well as for hot air from the attic. The bottoms of pipes and vents are commonly sealed with a boot, or metal strip, including a lead based or plastic sealant. They have one way shields sealed with rubber so that the air or smoke can escape, but water doesn't flow into the pipe or vent.
Roofing tools include the ladder to climb up to the roof, as well as others used for maintenance, installation and removal. These include simple items such as a broom and bucket to hold waste shingles, a slater's hammer complete with a hammer as well as an ax and blade, a slate cutter to cut through shingles, seaming pliers to grasp shingles, and a hip runner to install the ridge cap, the portion of the roof on top of seams.
When it comes to roofing nails, they must be long enough to extend through the shingles and go further to about 3/8 inch below the underside of the shingle. Anything that interferes with the nails biting into the wood might cause the nail to spring out of the shingle, and eventually the loss of shingles. This includes shingles with ridges, some under shingle materials, and of course nails that are too short. A good roofer can drive a roofing nail with one solid hit. A homeowner doing it themselves will find that they can drive the nails with one hit after only a few minutes.
Roofing supplies aren't as simple as they first seem. But with a little planning, you'll have everything needed for a quality roof.
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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