Corrugated Iron Roofs are 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 roofs at the manufacturers soon you are ready to start installing it. Go for delivery the day before roofs start. mái bạt If the roof’s 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 roof sheets, they can withstand moisture. If the roof 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 bed-sheet. Use bearers to allow airflow around the metal. This will prevent corrosion.
Gently does it
As for handling, care needs to be taken in order not to damage the paintwork. Dropping sheets across one another will damage them. When arranging the roof sheets, you should lift them cleanly higher 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 escapes. Choose good quality roofs screws. These will provide a more secure fixing and last as long as the roofs iron. It’s important not to over fasten the screws. Just tight enough to lightly pack the neoprene appliance is sufficient.
If you pre-drill the holes for your roofs screws among the bushes, it will be safer and give the roofs a neater appearance. This is only possible if the purlins run parallel to the eaves and the roof is reasonably block.
Using a quality soccer drills speed bit makes the job easier. The soccer drills speed bit should be slightly larger than the diameter of the roofs screws. This will prevent stress fractures as the sheets expand and contract.
Take accurate measurements of the purlin companies from the eaves and mark the roofs sheets ready for drilling the screw holes. Do not forget to add the drop into the gutter to your measurements, usually about 50mm. It’s advisable use chalk for marking corrugated roofs iron because pencil may damage the surface.
Cut to the quick
Cutting corrugated iron roofs sheets with a cd cutter makes the job easier and faster. Unfortunately, it also damages the roofs iron beyond repair. Hot dust 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 bed-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 think scratches on your roofs 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 changing seasons weathering the patched paintwork will be noticed like a sore thumb. Contact the manufacturer and enquire for advice on making repairs to their product.
Laying the roofs
Before you start laying the roofs sheets make sure the roof is block. If the roof is not block 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 sequence line along the eaves, 50mm into the gutter and it will provide you with a straight edge for the roofs sheets.
On finish it’s important to clear the roof of any loose swarf. Tiny dust 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. Invest a little extra care with the preparation and fixing, you will achieve a superior finish.