Roof Restorations Perth
What is Roof Restoration?
The Roof Restoration process basically involves the Cleaning – Repairing – Re-sealing & Re-Painting / Re-Colouring of Concrete roofing tiles. Faded Colourbond roofs & un-glazed terracotta roofs may also benefit from this application.
For concrete roof tiles, the Roof Restoration process is designed to stop or slow the process of roof tile surface deterioration. After a few years from being installed, your roof tiles will begin to oxidize & go powdery. Over time the oxide powder will soil in & around your gutters & restrict the flow of water & even limit your gutters life. Once the tiles original coating has left the tile surface the tile will then begin to suffer from surface erosion.
Surface erosion involves the pitting of the sand cement component of your tiles which simply means that the surface is at a more advanced state of deterioration.
Powerdrive Roofing has been in the business of restoring roof for the past for 12 years.
Powerdrive Roofing treats every roof individually, we have sealers & coating to suit a variety of roof tile & metal roof surfaces from very old to fairly new.
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Concrete Roof Tiles
Concrete roof tiles are normally only cleaned where the intention is to re-seal & re-paint/coat the roof tiles surface after.
There have been various makers of concrete/cement roofing tiles over the years. Some have performed very well & others have performed poorly.
There reality is that concrete tiles do in fact deteriorate over time. The general idea is that concrete cures & hardens over time, which is true, however, for concrete roofing tiles the curing process lasts around 12 months from the time the tile is made.
Concrete tiles may also develop structural defects if they are moved onto trucks and roofs, and are not left alone to mostly cure before being used. These defects mainly show up some years after the tiles are installed and cannot be rectified.
Concrete roofing tiles generate about 120 degrees of surface temperature where the ambient daily temperature is 30 degrees most summers.
As a result the tiles surface takes a hammering year in year out, with other things such as wind and pollution all contributing to the wear and tare of the concrete roof tiles surface.
Initially, the tiles surface will oxidise & become powdery; once the surface coating is gone the sand cement component of the tile also becomes affected by way of erosion.
The surface of the tiles ends up in the roofs surrounding gutter system & will soil in the gutter limiting the flow of water to the gutters down pipes storm water of water tank and eventually giving cause for the gutters systems failure as well.
A good quality sealer and coating application will stop the tiles surface deterioration with a new colour also dramatically enhancing your roof appearance.
Click here for me to estimate and come out & provide a free inspection of your concrete roof tiles.
Terracotta Roof Tiles
Terracotta roof tiles are normally cleaned to have the moss & lichen removed. Terracotta tiles are made from natural clay which is a naturally a moist material. Moss & lichen is attracted to the roof tiles surface and if left will grow and most likely restrict the flow of rain water over the tiles surface into the roofs gutters.
An application of an environmentally friendly anti-fungal solution should be applied to all moss & lichen prior to undertaking the roof cleaning process. We use a product called Roof Ripper to kill the moss & lichen prior to the roof being cleaned.
Once the anti-fungal treatment is applied, the roof tile surface is high pressure cleaned using around 4500psi of straight water pressure. A turbo type nozzle should be used when using such high powered water pressure.
Removing the moss & lichen will bring the tiles natural colour to light & help ensure the roof performs as it was designed.
Old terracotta roof tiles will become brittle over time & if so should not be cleaned as the tiles may break underfoot & water may enter the roof cavity as a result. It is also difficult to walk on & work on brittle roof tiles which makes it difficult to achieve any effective result.
Some terracotta roof tiles may show evidence of “Tile Fretting” and depending on the extent of this problem, will not benefit from any application and should not be cleaned.
Terracotta roof tiles which have glazing evident should not be sealed – painted or coated as an application such this would have trouble with any mechanical adhesion.
Any one promoting the re-glazing or sealing or painting of terracotta roofing tiles should be avoided, as brittle or fretted terracotta roof tiles should be replaced as $$$$ spent on roofs with these problems would mean $$$$ wasted.
Powerdrive Roofing can provide the best advice for Terracotta roof restoration & replacement.
Click here to for me to visit your property to & provide our free inspection for your terracotta roof tiles.
Terracotta Tiles Step-by-Step Restoration Process
Remove all broken roof tiles and replace using a similar age and type tile 1. Remove all broken roof tiles and replace using a similar age and type tile.
Apply ROOF RIPPER environment friendly product to all moss and fungal soiled areas.
Pressure clean the entire roof area from top to bottom using 4500psi of straight water pressure using a turbo type nozzle.
Clean out all surrounding gutters and wash down all external walls and paths affected by roof grime.
Remove all badly rusted valley irons and replace with new and treat all others.
Repair or replace lead flashings or damaged timber battens, also installation of quality extras such as ventilation kits.
Strip off all existing ridge capping tiles and gable end verge tiles and completely re-bed or re-bed where required as specified.
Re-point all ridge capping and gables using the Flexi-Point Ridge Security System, AS2050-1995.
Inspect repairs and air-blow clean the entire roof area in preparation for the coating system.
Clear Costing: Apply 2 coats of NUTECH Terra-Glaze or Aqua Stop Clear coating using the Air-less spray system OR Colour Coasting: Apply 1 coat of NUTECH Membrane Sealer to the entire roof area using the Air-less spray system.
Apply 2 separate coats of SRR Aqua-Shield Finish exclusive by NUTECH in a selected colour using the Air-less spray system ensuring minimum dry film thickness of 250 microns is achieved.
Hand paint all gables and flashings to avoid any over spray. Clean up and remove all residue from site.
A final inspection and job report is performed by the SRR works supervisor.