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Roof Restoration Melbourne

Check out our Roof Restoration Melbourne video and call Us today on 1300 218 889 for a free inspection and quote.

 

Roof Restoration – Cement Tile

With ever changing weather conditions, the Melbourne roofing industry has become very advanced and specialised. Rainshield’s roof restoration Melbourne division has developed unique processes to help ensure your restoration is tailored to combat chaotic weather conditions for years to come.

 

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Roof restoration, also called sealing and roof painting, is a process used to resurface cement tiles. As the demand for roof restorations has grown, so have the amount of companies providing this service. There are many different products available to use for the process as well as many different ways of getting the work done.

 

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Roof Restorations Melbourne  Melbourne Roof Restorations

 

So how do you know which products to use? Or the best way to get the job done? Or how to tell if you need to do the work in the first place?

In this section, we will examine what faults become apparent when a restoration is necessary, as well as explain the processes used to rectify them. As roofs age they inevitably deteriorate – ongoing and regular maintenance is a fact of roofing tiles. The most common areas requiring attention are;

 

Roof Restoration – Bedding and Pointing

 

 

Cracked and damaged bedding cement is a common site on Melbourne’s roofs. Bedding cement is the concrete securing the ridge caps running along the peaks of your roof. The pointing is a coloured cement or compound covering the bedding.

 

When the mortar (bedding) ages it will begin to crack and fall away leaving your ridge caps unsecured. This can result in them blowing off in high winds, allowing water ingress into the cavity and can also void your homes insurance against storm damage as this maintenance is your responsibility.

 

If you see this occurring you need to address it as soon as possible by either performing a full restoration or by re-bedding and re-pointing.

 

Restoring Rusty Valley Irons

Rusting valleys, sometimes referred to as roof gutters, are an equally common site in Melbourne. The valleys, made from steel, run along the join of two opposing faces. Once they have begun to rust the only recourse is to replace them via restoration.

Other common problems with valleys are loose mortar and tiles slipping down into the pan of the valley.

 

When the cement decays the tiles will no longer be secured. If this occurs you will need to re-bed and re-point them (and probably the caps as well). Some companies do not recommend re-bedding valleys and leave them “dry”. This is now a common practice with new roofing. Fair warning though, if your tiles are not nailed down, as is current building practice, leaving your valleys without cement securing them can lead to disaster. The valleys act as a wind channel, in extreme winds the un-cemented valley will allow wind to get under the tile making it much more likely to blow off your house.

 

Restoring Broken Roof Tiles

Broken tiles can lead to water leaking into the cavity, unfortunately tiles can break for many reasons. Walking on tiles in the wrong place without taking care can obviously break or damage them. Simple wear and tear will also contribute to some breakages over the years.

 

More serious problems can occur if the tiles have been laid too close together. As tiles heat up on warmer days they expand into neighbouring tiles – with this happening across the whole crest, fractures and breakages are likely to happen. If you believe this to be the case, a heat reflective compound can be applied to the tiles to minimise the temperature they can reach, reducing the chances of tile breakage.

 

Another issue is breakages from frost – either in very low temperatures or from wind chill factors. A tile that has lost its protective coating will absorb a significant amount of moisture – when ice is formed due to weather factors, the moisture in the tile surface will freeze. This will break the tile much the same way as a bottle of water in the freezer bursts on freezing.

 

Rainshield roofing offer a wide range of roofing services designed to assist you with all these issues and more. Our qualified supervisors are trained to identify the cause of your problems and recommend appropriate solutions to aid your roof restoration.

Asides from our full range of repair services, one of the most requested roofing jobs is our professional roof restorations.

 

Professional roof restorations can prevent ongoing maintenance and reduce costly repairs, while also beautify your home and adding thousands to the value.

 

Less professional roof restorations or “paint job” can be disastrous. If this is a project you’re looking into now or in the future, educating yourself is crucial. There are a huge number of roofing companies, many of which are less than honest in their approach.

 

Finding out the best practices will save you thousands of dollars in shoddy workmanship and add years to the life of your housetop. Done professionally, a restoration will last in excess of 15 years – or as little as twelve months if stringent procedures are not followed.

 

Heat Reflective Roof Restoration

Heat reflective coatings are the highest quality coatings available in our industry. Choosing these premium coatings has many benefits, including;

  • Reduced heat intake in to your home
  • Energy saving from reduced heating and cooling requirements
  • Water saving from reduced evaporative air-condition requirements
  • Cheaper than a new Colorbond Roof with similar thermal efficiency benefits

Roof Restoration Melbourne Technical Information

Realising the right way to go about your restoration will help you understand why the wrong way fails. The most common reasons for failure are as follows:

 

The Procedure

Why is it so Important?

1

Replace broken tiles likely to leak.

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Failure to replace or relocate chipped and broken tiles. Broken tiles leak obviously, so all tiles with chips greater than 50mm should be replaced. Smaller chipped tiles are displeasing to the eye and relocation to the blind side of the home is desirable.

2

High pressure clean tiles at 4100 PSI. This is done with a commercial cleaner and ensures all dirt and pollutants are removed and pressure tests any weak tiles that may be about to break.

Roof Restoration Melbourne

Inadequate cleaning of the tiles. Pressure cleaning is important not only to remove the dirt from a tile but also the pollution that is common to suburban roofs. Pollutants will have an adverse reaction to the acrylic paints applied. Loose surface sand will need to be properly removed also so expansion and contraction does not tear the top coats away from the tile. Professional roof restorers will use industrial machines to clean your roof with psi pressures between 3500 and 4300 during your restoration.

3

Replace rusted valley irons in Colorbond steel.

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Surface rust can adversely affect the coating applied and cause problems down the track.

4

Full re-bed to all caps and valley tiles in sand and cement. Almost all roofs require most of the bedding replaced.An ideal mix is three parts sand and one part cement. Any more and it will be sandy, any less and it will be brittle.

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Bedding down caps in weak sand/cement mix. A good cement mix for your roof is three parts sand and one part cement. It is very common in the roofing industry to use a sandy mix, as inexpensive cement dries rapidly if mixed properly, meaning many trips up and down the ladder during a restoration. A sandy mix means far less trips as the cement will not dry nearly as quickly. The problem arises when the flexible pointing is applied. As this product expands and contracts on the sandy concrete it begins to come away from the mortar mix and leave an open seam at the top. Water will then be able to get in to this seam but as the bottom of the pointing is anchored securely to your tile, it cannot drain out. We have seen huge damage caused to homes that have never had prior problems and all from a so called repair! Weep holes are often used to alleviate this problem but this allows water to get into your bedding. If your bedding is sandy it washes out anyway. If it is not sandy, you don’t need the weep holes.

5

Re-point in flexible acrylic compound. This is an artificial rubber compound designed to expand and contract in the weather and offer excellent adhesion to the bedding cement.

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Over pointing the ridge caps without replacing all of the cement. Pointing over old concrete can begin to come away as the pointing and subsequent acrylic coatings expand and contract allowing water to find its way into your home. If your ridge caps are loose, they need to be removed and the old cement disposed of. A new foundation of concrete is laid and the caps bedded on to it. The caps can then be pointed over (generally with a synthetic acrylic compound with superior flexibility an adhesive abilities) without fear of possible failure in later years (or months).

6

Apply nano co-polymer primer. This is designed to penetrate into the body of the tiles and prevent subsequent coats from peeling.

Roof Restoration Melbourne

Roof Restoration Melbourne

Peeling of the coatings. Peeling is a result of inadequate primer products being used. A common practice in the roofing industry is to seal the tile prior to top coating it. These sealers are thick compounds that trap air in the surface of the tile. When the tile heats up the acrylic coatings get soft and the air expands making the top coat lift. This will, over a period of time, make the paint peel off. To prevent this from happening a suitable primer coat should be used. The type of primer depends on the coarseness of your tile. Thinner (or even nano) primers for fine grained or newer tiles and slightly heavier primers for coarse tiles. Good restoration companies will always have a range of tile primers to recommend.

7

Apply high solids sealer. This is designed to build the surface of the tile up so when the top coats go on they will cover evenly. It also has special polymers that restrict the calcium salt found in tiles from leaching onto the top

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The two main reasons for using a good seal are: 1: Patchy finish, the reality is that roofs need four coats of product on them. No ifs. not buts, this is the only way to do the job properly. You need a primer to stop peeling and then a sealer to build the tile surface up to stop that thin patchy look and two colour coats on top. Exceptionally coarse tiles may even need five coats. 2: Oxodisation of the top coats, this is when the colour coats begin to break down and become powdery. Calcium salt is an agent used in cement to quicken the drying time. It is one of the main reasons roof restorations fail no matter how good the top coats are. A special sealant is required to prevent these salts from leeching through to the top coat and doing to paint what salt does to paint everywhere, shorten it’s lifespan. The majority of roofing contractors are unaware of the existance of calcium salts or its effects on a restoration.

8

Apply two coats of cross linked emulsion. This hard and dense polymer is a specially formatted coating designed to protect your tiles from harsh UV radiation and resist penetration from dirt and airborne pollution.

Roof Restorations Melbourne

Roof Restoration Melbourne

Melbourne Roof Restoration

Poor quality top coats. Okay, so how do you know what’s good and what’s not good? It’s not like the company you’re dealing with will tell you their paint is rubbish (and there are hundreds of paints to choose from). Here’s a couple of facts to keep up your sleeve so you can quiz your prospective roofer on whether their paint is up to scratch; Pure acrylic resin is the best quality you can get in a paint (there are different types of resins but I won’t go there and bore you to death). Resin is a liquid that has 50% solids in it. So the best types of paint would be pure acrylic resin that would only have UV stabilisers, fungicides and pigment added (the extras account for around 5% extra solids). This means a good quality paint will have around 55% solids in it. Be careful though as cheaper paints will often have fillers added that will dramatically affect the longevity (but not the immediate appearance) of the coating. In order to establish the coverage of a paint and the warranty that is given both the solids content and the percentage of resin will be known by competent companies.

Lastly, we clean the site of all job related mess. The work’s not finished until the Rainshield Roofing team have cleaned up all the mess and debris from the completed restoration.

So in brief – Good solid high pressure cleaning around 4000 psi, full re-bedding in a 3/1 sand & cement mix, pointing in flexible pointing, FOUR applications of acrylic compounds as follows; a primer suitable for your tile, high solids sealer with salt restrictive polymers incorporated and a good quality top coat made up of at least 50% solids with pure resin as the base and no fillers added. There other factors will affect the quality of the roof restoration – most important being the weather. It needs to be taken into account to ensure the best procedures and products are used to maximise the life of your new restoration, but with these basics addressed you can know you’re getting your money’s worth.

 

How Much Does a Roof Restoration Melbourne Cost?

For a standard 15 square home, restoration can cost anywhere between $1500 to $15,000. As mentioned previously, it is best to educate yourself and understand why the huge discrepancy in pricing exists – especially since to the layman they all appear to offer the same thing. If the company you’re dealing with is fair and have quoted you as we have set out above, then realistically you will be looking between $4000 and $8000. The end price will be determined on the amount of work required and the degree of difficulty involved in getting it done.

 

Roof Restoration Melbourne FAQs

  • Why are my tiles breaking?
    This means the cement content is diminishing and your tile is becoming weaker. A bonding agent/primer will help strengthen the tile and reduce the amount of breakages, also frost can attribute to tile breakages as water from dew freezes causing stress and pushing the tile to the breaking point. Sealing the tile against water ingress will stop this effect.
  •  I have rusty valleys
    The protective coating has deteriorated and the metal has begun to oxidise. New valley irons need to be fitted.
  •  Mortar is cracking and falling out, what should I do?
    Crumbling mortar (also known as pointing, bedding or grout) is a clear sign your house requires urgent attention. Loose ridge caps can be blown off in a storm leaving your home exposed to the elements and usually means your home insurance cover will be severely limited. A re-bed and point is required to re-secure the caps.
  •  There is moss and lichen growing, is this a concern?
    Light moss growth is nothing to worry about asides from possible aesthetic issues. Heavy growth, however, can impede the flow of water from your roof and will require treating and high pressure cleaning. There will normally be some repair work associated with a pressure clean also.
  •  Why are there white stains on the back of my roof tiles?
    This is a calcium salt residue that comes from the cement in the tile (used as a drying agent) and is another sign your tiles are getting brittle. A full roof restoration will stop this from being a concern.
  •  Why have my tiles become brittle?
    They have aged significantly and lost a lot of their strength. Unfortunately you have left it too late to restore your roof and a replacement is your only option.
  •  I really need to paint my roof?
    If you paint your roof it will soon peel and look quite poor. The process involved in a professional roof restoration, however, provides much more than just aesthetic appeal. The compounds employed by Rainshield Roofing are far superior and much longer lasting than paint. Our process includes essential roof maintenance prior to applying our membranes and these membranes protect the maintenance we perform.This means it is much less likely you will require the same type of maintenance in the future.
  •  My roof is leaking!
    Get it assessed immediately! Leaking will cause internal damage if left unattended and may even cause house fires. Urgent attention is often required.
  •  Why is there sand in my gutters?
    This is a sign of erosion within your tiles and an indication the tiles is becoming porous. A protective membrane is required to arrest the tile deterioration.
  •  Do you do metal roof restorations?
    Yes, we have special compounds that can be applied to metal roofs to bring back the new look and to protect the steel. Our process is also excellent for Colorbond restorations.
  •  Do you use heat reflective coatings?
    Yes, we also use heat reflective technology in our coatings upon request. The sepcialised roof coatings we employ will add a significant difference to the thermal properties of your house, but extra insulation qualities are required we can upgrade the coating to one that has nano ceramic particles infused into it. This heat reflective paint also has the ability to reflect red rays. Talk to our technical department for more information.
  •  How long does a roof restoration take?
    This will vary from job to job and is dependant on the amount of work required. Most roof restorations take between two and four days weather depending.
  •  How long until you can start?
    Because we are a larger company and have multiple teams operating at any one given time, we can, (in urgent cases) attend to your problem very quickly. However, if the problem is not urgent the waiting time is within a few weeks – weather depending .
  •  How much do roof restorations cost?
    The cost is calculated by the overall area, valley condition and length, safety requirements, roof pitch, tile type and amount of ridge caps/gable tiles requiring re-bedding. It is very simple once a site inspection has been completed to determine the price, so the best course of action is to have one of our supervisors visit and assess the requirements you have and advise you on a course of action and associated costs.

 

Roof Restoration Melbourne

We are available 7 days a week for an on-site inspection and our quotations are free of cost and without obligation. If you would like to talk to an expert about Roof Restoration Melbourne, get in touch with us via contact form, or call us on 1300 218 889.

Roof Restoration Melbourne

Tel: 1300 218 889
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