A flat metal roof restoration saves money, time, energy while extending the life of your roof. Regardless of the sturdiness of a flat metal roof, over time, weather elements deteriorate the protective finishes, thus compromising the structural integrity of the roof.
It is subject to expansion and contraction due to temperature changes which allow the seams to open up and leak in moisture to the building envelope, thus reducing the functionality and aesthetic appeal of your roof. A metal roof restoration comes in handy with appropriate repair compounds and coating products that will restore your roof to a new-like condition without straining your budget.
When you detect your flat metal roof problems early, thanks to diligent roof inspection, there are many coating options available even it comes to restoring it.
But first, patch up and repair.
If your flat metal roof is capable of bearing weight and structurally sound, you should first repair the damaged areas before applying a coating solution. Patching up and repairing means installing new panels to replace the excessively irreparable ones, probably installing new skylights and patching up leaks on the roof.
While patching up damaged areas, the restorer cuts off the parts, cleans and brushes the area, applies metal coating base then patches up the piece with a new replacement.
While metal roof repair and patching up is slightly more complicated than applying coating products, it is a cost-effective way of restoring your damaged roof than doing a whole replacement. It also prolongs the durability of the roof for a couple more years.
Use of asphalt emulsion
Asphalt emulsion was initially developed to coat the automobile frames but works well with coating flat metal roofs. Asphalt emulsion materials naturally expand and contract with the metal roof, thus shielding it from problems caused by temperature changes.
They provide elasticity that was initially absent in the metal roof; hence it is a useful option when it comes to restoring your flat metal roof.
Another tip for restoring your flat metal roof in Melbourne is by using silicone coatings. They are top products available for metal roof restorations. Silicone coatings are capable of withstanding pooling water and are highly effective when applied. They form a tightly bonded monolithic membrane and are applicable without a primer.
A silicone coating has a robust cross-linking property and moisture curing capacity to securely bond the metal roof seams and prevent water leakages. However, the roof needs small repairs and patches before application as it needs to be in good condition before applying the coating.
Silicone coatings are number one when it comes to metal roof restoration because of bonding tightly and adhering completely to metal. However, silicone coatings are slightly expensive than other restoration products. But, it is a worthy investment because the material lasts long and you will save more money than using another restoration product. The overall roof will last longer despite the cost, and you get to increase its functionality.
Acrylic coatings are the most popular products for flat metal roof restoration. They have been around for a while longer than silicone coatings and are still the most popular when it comes to roof restoration.
They are affordable materials compared to other metal roof restoration products in the market. It is mainly because the performance and raw materials of these coatings do not stand up to those of other different coatings.
With an acrylic coating, a primer application of first required to achieve good adherence to the roof. Acrylic coatings have low solids most often not higher than 55%; therefore, they are not applicable thickly in a single coating. If you want to achieve a thick layer, you have to apply them in two or more coats.
For instance, the restorer can apply a butyl tape all over the seams and places of penetration, flashings and curbs to create a fully sealed and watertight substrate. Then encapsulate screw heads with a trowel grade for excellent waterproofing or apply a three-course application of mastic and membrane where there is an extreme movement to prevent expansion and contraction problems in future.
After that, there is an application of a base coat that has excellent adherence to metal for full waterproofing, and then the final coat is applied. The final coat contains UV protection properties for increased energy efficiency. The final result is a well maintained renewed metal roof at a low cost with an added energy efficiency.
The only drawback of acrylic coats is that when compared to silicone coats, it cannot resist water pooling; therefore if it rains heavily, without the proper roof drainage leaks will develop.
Aluminium roof coatings
Aluminium roof coatings for flat metal roof restoration come in spray or roll which applies to the roof's surface. Just like acrylic coatings, they need a primer to adhere to the metal surface.
Aluminium coatings deflect 50% of UV rays; therefore, they are energy-efficient, although not entirely. They are most advantageous in that; you can achieve full coverage with only a 1.25gallon per square meter. Proper coverage can be reapplied again in 7 years. It translates to low labour and material costs.
An aluminium coating is an ideal solution for a rusting roof and improves the energy efficiency of your roof. However, it is not a waterproof coating and only aids in waterproofing your roof. It is suitable for restoring a corroded roof but that which is not leaky.
If you have to use aluminium coatings, ensure your roof is completely patched up from leaks and is in an excellent overall structural condition.
The bottom line
Metal roof restoration allows homeowners to improve and maintain their roofs by providing an easy to apply solution without incurring the cost and hassle of tearing off and replacing the whole roof.