BBA Approved Metal Roof Coating System
Liquasil formulates and manufactures Metalseal, a unique silicone roof coating made in England.
BBA Approval allows you to specify or use Metalseal with 100% confidence for your metal roof refurbishment projects.
The system includes cut edge corrosion treatment as standard, and the single-coat application is guaranteed for 25 years.
With its distinctive semi-gloss finish and superior protective qualities, many professional specifiers choose Metalseal for their roof refurbishment projects.
You can book an online or face-to-face meeting or CPD session with a director of Liquasil to learn more.
Metalseal BBA Certificate
Complete Metal Roof Refurbishment System
If the original roof finish is damaged or degraded, the life expectancy of a metal roof can be significantly reduced.
Ultraviolet exposure and mechanical damage can result in complete failure of the finish, leaving the steel substrate susceptible to corrosion.
Liquasil’s Metal roof treatment is designed to provide long-term protection for metal roofs.
More economical than a new roof or overcladding, Metalseal can be installed with little disruption to occupied buildings.
This purpose-made silicone roof coating system can be applied by brush, roller or airless spray in a single coat.
This makes it very quick and economical to install.
Metalseal is 100% UV stable, so will not fade or degrade over time.
Metalseal is the ultimate protective coating for metal roofs in the UK and is the only one designed by Chartered Building Surveyors.
Unique Formulation
We use specially selected silicone oils and polymers to produce a metal roof coating that is extremely long-lasting.
Metalseal was the first specialist metal roof refurbishment system to achieve BBA Certification (certificate reference 18/5536).
Widely specified for industrial roof refurbishment projects, Metalseal provides a permanent protective finish to metal profiled roofs.
Older installations of Metalseal can be easily cleaned with low pressure jet wash.
Moss and lichen are a thing of the past because the product resists fungal growth.
Two Grades
There are two versions of Metalseal to suit individual application methods.
Where brush and roller application is preferred, we recommend Metalaseal SF, our solvent-free metal roof coating.
It has more body which helps to reduce sagging and runs on crowns and webs of profiled steel roof sheets.
For spray application, we recommend Metalseal 20, which contains a small amount of solvent to help it pass through a spray gun.
Both versions can be applied by brush and roller.Â
Cost of Coating A Metal Roof
Metalseal is cheaper to buy and to install, than many competing systems.
More than just a coating, our metal roof coating will refresh and protect your steel profiled roof in a single application.
When installed by a trained, approved installer, the system is covered by a 25 year product guarantee.
Insurance backed guarantees may be available from your appointed Liquasil Approved Installer at extra cost.
Metalseal adds value for building owners at the lowest possible cost.
Brush Roller or Airless Spray Application
Ease of application is key and Metalseal 20 can be installed by airless spray, roller or brush, so is suitable for use on small or large metal roofs.
For brush and roller application, we recommend Metalseal SF (Solvent Free).
Both versions are available in any RAL colour, subject to a minimum roof size of just 300 sq metres at no extra cost.
Colour match is guaranteed between batches.
Preparation of the roof depends on the condition of the substrate. In many cases, jet washing is all that is required.Â
If cut edge corrosion is present and the substrate is in poor condition, we recommend that the surface is prepared back to bare metal (ST3 standard).
A number of economical methods for doing this and we are happy to provide guidance where necessary.
Example Metal Roof Coating Projects
Easy To Apply
We have made Metalseal easy to apply for our approved installer network, by creating a product from scratch, that can be used straight from the can.
For companies and individuals experienced with other roof coatings and roof paint, Metalseal will be a real eye-opener, because from the moment the can is opened, it looks and smells entirely different to what you have been used to using.
A quick stir of the Metalseal 20 and it’s ready to use. Metalseal SF doesn’t usually require stirring at all, because it’s solvent-free and the ingredients remain suspended in the liquid.
This makes Metalseal quick and easy to apply to your previously prepared surfaces.
Sometimes, spraying roof coatings can be difficult due to wind. As the product goes through the airless spray equipment, it atomises into small particles that can be carried very long distances.
Of course, if this happens, it will almost certainly land on the most expensive cars in the car park!
This is called “overspray” and should be removed by a professional car detailer without the use of chemicals. Metalseal can be used as both a metal roof and cladding coating, due to its exceptional flexibility and UV resistance.
However, for lower-level cladding, we recommend our dedicated cladding paint, Cladcoat because it’s less susceptible to environmental soiling and mechanical damage.
Become A Liquasil Approved Installer
Metalseal is a BBA Approved product and consequently, we restrict the supply to experienced roof coating companies that have completed our free training.
Click the button below to learn more – make more profit with Liquasil!
FREQUENTLY ASKED QUESTIONS
What Is The Cost Of Metalseal?
Prices are provided by your chosen Liquasil Approved installer.
Prices vary depending on various factors including; geographical location, roof size, complexity, roof conditon, access arrangements and more.
How is Metalseal Applied?
Metalseal 20 can be applied by brush, roller or airless spray, but is manufactured as a spray grade product.
Metalseal SF is the solvent-free version that is suitable only for brush and roller application.
The thicker consistency helps to reduce sagging of the product when applied to the crowns of metal roof profiles.
What Colours Are Available?
The standard Metalseal product is made in Goosewing Grey, since this is the most common metal roof coating colour in the UK.
However, we can custom-make Metalseal in any RAL colour.
Please allow at least 10 working days for the production of special colours.
Does Liquasil Inspect Projects?
On larger value roof coating projects, our team will conduct a number of audits to check that the product is being installed in accordance with the specification.
If any issues are identified, these are discussed with the approved installer on site for them to correct.
Audit reports are compiled for Liquasil and Approved Installer reference.
Is Metalseal Guaranteed?
Metalseal is guaranteed for 25 years.
Our product warranty is available via your Liquasil Approved Installer once the project is complete.
The Liquasil product warranty does not include workmanship, so if a workmanship guarantee is required, this should be requested before you sign any contracts.
Are Additional Primers Required?
In most cases, no primer is necessary, other than for treating cut edge corrosion as part of the project.
The following substrates are likely to require additional treatment:
- Bare galvanised steel
- PVDF / PVF2 coated surfaces
- Aluminium
In any event, your approved installer will conduct suitable adherence tests prior to the coating being installed.
Will The Surface Remain Glossy?
The finish of Metalseal is semi-gloss.
Over time the surface will appear to dull down with environmental soiling.
Metalseal can be cleaned easily with a low pressure jet wash and the appearance will come back to as it was when it was applied.
Are Roof Leaks Covered Under Warranty?
No, because Metalseal is a protective coating.
If your metal roof is leaking, it will be from one of any number of defects, including but not limited to:
- Defective roof light
- Missing or mis-aligned fixing(s)
- Missing or defective seals
- Incorrectly sealed flues or other details
- Defective seals on cladding capping details
- Gutters
The metal roof covering is already providing the waterproofing to the building, so unless there is a hole or split, water ingress issues have other causes.
How Is Spray Equipment Cleaned?
It is essential to regularly clean airless spray equipment using Xylene.
Xylene is available through merchants and Liquasil.
Products like gunwash should never be used, as this often contains water and other chemicals that can cause silicone coatings to cure in the spray lines.
Where Can I Purchase Metalseal?
Metalseal is available exclusively via our independent, trained installer network.
Liquasil products are not available via merchants.
Can The Product Be Installed All Year Round?
Like most coatings, adhesion can be adversely affected by certain weather conditions.
We do not recommend it is installed at temperatures below 5°c.
Higher temperatures will not affect the application of Metalseal SF, but could result in the premature solvent release of Metalseal 20 if applied to a surface with a temperature of greater than 40°c.
Is Metalseal A Waterproofing System?
No. Metalseal is a protective coating designed for the refurbishment of degraded metal roofs.
The waterproofing element is the roof substrate itself.
Additional components can be added to the standard system to reduce the chance of water ingress, but most often, metal roof leaks are the result of other defects that are present.
How Long Does A Metalseal Installation Take?
Installation time varies according to the size and complexity of the roof and how many people are involved with the installation.
A very experienced spraying team comprising a sprayer and a labourer, can achieve up to 1000 sq metres in a single day during the summer.
In winter, the timescales are extended due to reduced daylight hours, possibility of inclement weather and lower temperatures.
Brush and roller application is slower, but often made up for with larger installation teams.
How Many Coats Are Required?
Metalseal is a single coat application in most cases.
There may be occasions where an additional coat is necessary due to local conditions, but this is rare.
Occasionally, an installer will apply an initial mist coat before application of the main coat in order to iron out any surface imperfections.
How Is The Roof Cleaned Before Coating?
There are a number of cleaning methods available to installers, but most commonly metal roofs are cleaned using pressure washers.
Does Metalseal Require Any Maintenance?
It’s good practice to inspect roofs on an annual basis.
If any mechanical damage to the coating is noted during an inspection, it’s an easy process to clean down the affected area and overcoat with Metalseal.
There is no mandatory maintenance requirement other than this.
Environmental soiling should not adversely affect the metal roof coating in most conditions.
Can A Peeling Metal Roof Coating Be Over-Coated?
It is very common to see the original metal roof finish peeling back and leaving large areas of bare galvanised steel.
When this happens, before the roof is re-coated, all of the existing, failing finish must be removed.
The reason for this is that the original finish will continue to come away even after it has been overcoated.
Over-coating a failing finish does not stick it back down and the new coating will fail – regardless of manufacturer.
ADDITIONAL PRIMERS & TREATMENTS
Galvanised Surfaces
Bare galvanised surfaces contain an invisible layer of zinc that can hinder adhesion of new coatings.
They should be treated with a mordant solution (T-Wash), that is rinsed off once activated, usually after an hour or two.
This will help ensure project is successful and will also enhance the life expectancy of the installation.
Liquasil can provide a mordant T-Wash solution or a galv primer as necessary, but any mordant solution can be used.
PVDF / PVF2 Coated Surfaces
PVDF or PVF2 coated steel is Identifiable by its hard and smooth finish and is notoriously difficult to overcoat.
The reason is that they contain Flourine which is used in the manufacture of many non-slip or non-stick coatings.
Liquasil has a specially formulated PVDF primer for use on these surfaces that ensures successful and long-term adhesion.
Our PVDF Primer is a single -component product that can be applied by a simple hand-held garden sprayer.
Cleaning Metalseal
Silicone coatings are classed as “soft coatings” and can be damaged by impact, abrasion or harsh jet washing.
Coated surfaces can be cleaned using low pressure jet wash, holding the lance at least 12 inches from the surface of the coating.
Turbo lances must NOT be used.
Alternatively, smaller areas can be cleaned using washing-up liquid and water, agitating the surface with a sponge or soft bristle car washing brush and then rinsing with clean water.
It is not a requirement of Liquasil’s product warranty that the surface is cleaned regularly, but it is a requirement that the installation is examined annually for signs of damage, which if present, can be touched up with more product once the surface has been cleaned.
Liquasil can also provide a compatible anti-fungicidal wash to kill any fungal growth that might be present on the surface.
Need help in specifying a metal roof coating?
Our friendly building surveyors are here to help.
Please call us on 0121 709 5352 and speak to the most helpful team in coatings!