Aug 2009

Volume 4, Issue 3  

ARTICLES PVF2 Series & METALLIC PVF2 Series with Kynar 500® coating Technical Journal - Metal roofing & lightning More Tips - Maintenance of metal roofs Beautiful wall cladding - Wisma Perindustrian Cafeteria Career Opportunities at Colourcoil Industries Colourcoil Staff Outing - KK Adventure Park Need more Info?

Media Click to view www.colourcoil.com

PVF2 Series^TM & METALLIC PVF2 Series^TM with Kynar 500^® coating
Color issues a statement, creates a mood and makes that desired first impression quickly and more effectively than almost any other architectural component. But color’s beauty can be fleeting. Sunlight, with harsh ultraviolet rays, can quickly turn brown to tan, red to pink, or a deep blue to sky blue.

The special coatings for the manufacturing of  COLOURCOIL^® PVF2 Series^TM and METALLIC PVF2 Series^TM pre-painted steel for metal roofing applications, are manufactured with 70% full strength Kynar 500^® PVDF resin that is transparent to ultraviolet rays, and when combined with durable pigments, the combination creates a coating system that prevents color from fading. Colourcoil's Kynar 500^® resin-based coated pre-painted steel are available in a rainbow of sheens and colors, including metallics and pearlescents. Not only that, they come with warranties of 20 years against colour fading, chalking and peeling and 25 year warranty against corrosion.

The truth is on the test fence
Panels coated with 70% full strength Kynar 500^® resin-based coatings and other resin systems were exposed on a South Florida test fence for 10 to 17 years. The panels were evaluated periodically during exposure for chalk, gloss, and color changes. Compare the unexposed portion (top panels) with the exposed portion (bottom panels) and see table.

COLOURCOIL^® PVF2 Series^TM or METALLIC PVF2 Series^TM with 70% full strength Kynar 500^® resin-based coatings will outperform polyester powder, urethane, silicone polyester and acrylic coatings in every category: better color retention, better resistance to chalking. The proof is in the pictures of the coated panels.

Reduce maintenance costs and forget about pre-mature colour fading problems. For your next metal roofing or wall cladding project, specify COLOURCOIL PVF2 Series^TM or METALLIC PVF2 Series^TM and get your 20 year warranty against colour fading, chalking and delamination with a 25 year warranty against corrosion.

P.S. Beware of cheap PVDF colour coated metal roofs. Suppliers can claim that their metal roof colour coated steel material is PVDF or Kynar 500® coated, but the actual paint formulation for the colour coated steel does not meet with the required specification at all. Very often, the PVDF or Kynar 500® compound is reduced to less than 70%, so as to reduce cost of the coating and final product. The supposed durable properties of such imitation products will be drastically reduced. You can rest assured that when you specify a COLOURCOIL® product for your metal roofing or wall cladding project, you will be getting the real deal.

Other COLOURCOIL^® high performance pre-painted steel products......

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TECHNICAL JOURNAL - Metal roofing & lightning
Contrary to popular belief, a metal roof is no more likely to attract lightning than any other type of roof.  Consider trees (made of wood) which frequently attract lightning.  Studies prove that lightning is attracted to the highest surrounding objects, regardless of their composition.  In the event lightning were to strike a metal roof, it will not catch fire and combust like wood.  Rather, it will help to disperse the electrical charge over a larger surface area.

Click here to view our technical journal on metal roofing and lightning.

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MORE TIPS - Maintenance of old metal roofs

If your home has a metal roof, it should last 40, 50 years or longer with regular maintenance. Taking care of problems early will help ensure you get the maximum possible service life!

Repair processes vary widely depending on the type of metal roof. Whenever repairing a metal roof, be sure to use compatible materials.

Many metals react, causing corrosion. Some woods and other chemicals can also cause corrosion. Be sure to read your manufacturer’s metal roof care instructions.

While the required maintenance steps vary, we’ve assembled tips on how to maintain and repair most types of metal roofs used in residential construction. Read on to learn more on how to maintain and repair most types of metal roofs

 General Repairs

1. Pull and re-nail loose nails.

2. Look for holes, rust patches and other signs of damage.

3. Seal leaks with urethane roof cement. Urethane protects against UV breakdown better than asphalt or plastic roof cement.

4. Re-calk edges and seams along flashing using urethane roof cement.
    

Patching a Hole

1. It is important to use the same type of metal as the roof, otherwise your patch can cause corrosion. First, clean the area with an all-purpose cleaner and a wire brush and let it dry completely.

2. Your patch should be at least 2 inches larger than the damaged area, and remove the corners with tin snips. Fold the edges under ½ inch. Sand the folded part until its shiny. Put flux on the roof where the patch will be, and on the edges of the patch. Place the patch on the hole and weight it down with a brick. Hold solder on the seam and heat with soldering iron so that it melts and runs under the patch. Do this all the way around the patch, not leaving any open spaces.

3. Cut two more patches larger than the hole. Coat the area on the roof with cement. Press one patch and apply another coat of cement. Repeat with the last patch and apply one last coat of roofing cement.

Long Run Metal Roofs

There are two basic types of long run metal roofs: fixed-through and clip-on. Clip-on roofing can be used on flatter roofs, with slopes as little as one degree. The clips go into the roofing first, which is then fixed to the roof purlins. Fixed-through corrugated sheeting is used on more sloping roofs (not below eight degrees). Sheets are held onto the roof with fastenings drilled through the roofing material.

Any repairs that penetrate the metal of a long run roof could invalidate your warranty. Check with the roofing manufacturer before doing any repairs. Also, check with the manufacturer before cleaning or attaching fastenings. You will need to know the correct cleaners and metals to use to prevent damage. For example, if your roof is made of zinc/aluminum-coated steel, you need to use soft zinc or aluminum flashings. Lead, even just from marking with a lead pencil, could cause reactions and corrosion.

Steel Roofs

Lifted Flashing - Flashing protects vulnerable spots, and if they are damaged you may have leaking. Lead or aluminum flashing that has bent or pulled away can be reshaped to the roof profile, but you might want to consider replacing them with a heavier grade flashing.

Loose Nails and Screws - Nails and screws that hold flashing into place need to be replaced if they fail. Consider replacing them with spiral shank nails or screws for better hold.

Dented and Damaged Sheets - If you can access the underside of the roof, you can push out smaller dents. Badly damaged sheets will need to be replaced.

Buckling and Tearing - Buckling and tearing can be caused by heat or by too few joints. Badly done repairs can also cause buckles. Remove and replace sheets with shorter lengths and more joints.

Corrosion - Metal will corrode due to grime, steel debris left on the roof, or contact with incompatible metals or woods (such as cedar, which is highly acidic). First, remove the cause. Then, clean the roof by sanding all the rust away. Apply a zinc-rich primer to sanded areas, then prime entire roof with galvanized iron primer and top coats. Severely corroded roofing will need to be replaced.

Bi-Metallic Corrosion - Many metals when put together will cause corrosion, especially when they become wet. Check with the roof manufacturer to find out what metals are compatible with your roof. If your roof is zinc/aluminum coated steel, it is not compatible with copper, pre-painted steel, galvanized steel, or lead. Make sure copper pipes don’t direct water onto metal roofing or gutters. Flashing should be made from the same material as your roof.

Corrosion at Roof Ridges - Salt, dust, or sand catching under the roof ridges can cause corrosion. If this happens, remove the ridging and clean the deposits. Remove the rust. Prime the area and replace the ridging. Replace any badly corroded ridging or roof panels.

Pre-Painted Steel Roofs - Factory coated steel is rust resistant and should need little repair for the first 15 years after installation.

Peeling Paint and Chalking - Weather can cause peeling paint and chalking (white powdery build-up). If the warranty period for the roof has expired, remove loose paint and repaint according to the manufacturers instructions.

Minor Scratches - Minor scratches (most don’t affect weather tightness) are best left alone, since patching with paint will show up more than the scratch. If sheets are badly damaged they will need to be replaced.

Surface Stains - Surface Stains can form from poor pre-paint preparation or with runoff from lead flashing. Lift the flashing, prime and paint both sides with acrylic topcoat to match the roof.

Unpainted Metal Roofs

White Rust - When water droplets sit on the surface of an unpainted metal roof, white rust can form. Scrub them off with a plastic brush, not wire. Regular cleaning will prevent these, or you can paint the steel to reduce corrosion.

Red Rust - This is sometimes visible on very old, exposed zinc/aluminum or galvanized steel. The only long-term solution is to find and remove the cause. Possible causes are: run off from cedar, redwood, CCA timbers (those treated with copper, chrome, and arsenic), glass, or painted steel; run off from clear or opaque sheeting; a corrosive environment (for example, a nearby swimming pool); or use of lead flashings or stainless steel fixings with zinc/aluminum alloy steel. Once you have identified and eliminated the cause, you can remove the rust, prime the area with a coating that is recommended by the manufacturer.

Corrosion - Corrosion can be caused by debris collecting under flashings and roofing overlaps, and can be avoided through regular maintenance, carefully cleaning under flashings and overlaps. The underside of galvanized steel sheets can corrode if they are not primed or washed. Usually by the time you notice this, the damage is severe and the sheets will need to be replaced. Priming overlapping sheets can prevent this.

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BEAUTIFUL WALL CLADDING - Wisma Perindustrian Cafeteria
Wisma Perindustrian is a 14 storey building that is located along Likas Bay in Kota Kinabalu, Sabah, Malaysia. On the ground floor is a newly renovated canteen that caters for the office staff. As part of its exterior facade, the architect has opted to use horizontal wall cladding panels which are manufactured from our high performance pre-painted steel, COLOURCOIL^® METALLIC PVF2 Series^TM. The colour used is copper.

The 0.55mm BMT (i.e. base metal thickness), horizontal wall panels are machine fabricated and then installed over metal frame, thus allowing for ventilation in case there is moisture trapped at the back of the metal wall panels. The wall panels are 190 mm wide and when installed together, they leave a gap of 10mm, showing horizontal lines when viewed from a distance.

The vertical corner and end pieces to close of the ends of the wall panels, are sections which have been fabricated accurately with a fully computerized folding machine. There are no visible cut edges which may accidently hurt people who lean or brush against these panels. 

Architect: A Plus U Design Sdn. Bhd. Wall Cladding: Wall panels WB 200 Fabricator & Installation: CityTop Sdn. Bhd. Wall Cladding Material: COLOURCOIL® METALLIC PVF2 SeriesTM

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CAREER OPPORTUNITIES - Job Vacancies at Colourcoil Industries
Colourcoil Industries is currently supported by some 60 over staff and we hire people who cares about the company, respects the community and are proactive and self motivated striving to fulfill our vision and mission while meeting the needs of our customers and exceeding their expectations.

There are currently some job vacancies in Colourcoil Industries and if you are interested in starting a career with us, please visit our website. Click here to get more information.

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COLOURCOIL STAFF OUTING - KK Adventure Park
On 27th June 2009, Colourcoil HR department organized a team building exercise for its staff and personnel at KK Adventure Park, which is about 35 minutes drive from Kota Kinabalu (KK) City. It is one of the annual activities held each year to foster stronger ties amongst the staff while having a great time.

The group was greeted and briefed by Mr. Roy Stone before being led by the respective coordinators to take turns in joining the exciting activities the park had to offer. Among the more thrilling (and physically challenging) games were the Flying Fox, Wall Climbing, and the one that everyone enjoyed the most- Bungee Trampoline. Through the High Ropes Course, we managed to find out who amongst us were actually terrified of heights! Although it rained after the good lunch which was provided for, it did not deter us from continuing to play Volleyball and the other beach activities organized by the coordinators. Indeed, everyone had tremendous fun and enjoyed themselves, despite having sore muscles and body aches for the next few days.

Special thanks for Mr. Roy Stone from KK Adventure Park for arranging the outing for us.
 

Front Office & Factory Staff Photo	Mummy game with some of our staff wrapped in tissue paper
High Rope Course	Bungee Trampoline
Wall Climbing

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Need more info?
Whether you are an architect, engineer, developer, house owner or a metal roofing or wall cladding manufacturer, our marketing team will be most delighted to discuss with you on your specific product requirements.

If you wish to make a factory visit, obtain a free brochure or complete specifications and colour charts, please contact our courteous and friendly marketing staff by calling the nearest office or just drop us an email at info@colourcoil.com.

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