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how to stop roof tiles being blown off

by:Xingfa      2019-10-26
Wind pressure is a common cause of failure for tile roofs.
When the wind moves on the roof, it creates an upward force, causing the roof tiles to rattle or to be completely removed.
Contrary to what is widely believed, the roof tiles are not \"blown\" roofs.
The wind creates an upward force as it moves on the roof, causing the tiles to suck up.
To build a safer roof system, it is important to understand this subtle distinction.
Fixing the tiles on the lift up is the key to keeping the tiles on the roof.
When the wind passes through the roof area, the air pressure on the roof decreases.
At the same time, the pressure under the roof has also increased.
The increase in the internal pressure of the attic space leads to positive pressure on the roof tiles.
The negative pressure on the top will cause the tile to suck up and lift the tail of the tile.
The lower the spacing of the roof, the higher the force will be.
If the tiles are sucked up instead of blowing, the old roof tile fixing method may not be the best.
Traditionally, roof tiles are nailed to the head or top of the tile.
This holds the tiles under gravity but has little effect on the upward tile lift.
In fact, the only factor in ensuring the bottom of the tile is the weight of the tile itself.
Test in the UK proves that roof tiles clipped to the bottom or fixed to the bottom can withstand 5 times the force of the head nail roof tiles.
Tiles can be trimmed or routed to ensure the tail is protected from wind lift.
This also stops the annoying rattle or chatter sometimes associated with windswept roofs.
Chatter occurs when the tiles are lifted and dropped by the wind vortex.
I prefer to use a silicone bead between tile classes as a second line of defense to prevent tile chatter.
It should be noted here that if the modern roof tile clip is to have any effect, it must be installed correctly.
Tile clips are usually nailed near the interlocking channel.
Due to the risk of damage to the tiles, the nails have a tendency to be too far away from the interlocking device.
The clip must be located at right angles close to the tile.
To prevent the tiles from loosening, the roof clamps should be placed firmly.
In my opinion, the old tile bottom wiring system is better than the modern cut.
The wire is fixed on the hole eye at the bottom of the tile and is fixed between the tile lessons on the support bar.
This has the effect of pressing the tiles. I have re-
Cable roof with roof over 50 years old, the wires are still clamped.
In terms of preventing wind damage, the most important part of the roof is the roof felt.
Before the tiles are fixed, the roof felt or sand gold is placed under the baton.
The main function of all roof felt is to prevent wind damage.
The waterproofing of the paper is far less important than its ability as a windshield.
Sarking prevents the increase in the pressure inside the attic, thus preventing the rise of the wind.
It must be firmly fixed with the overlap of 150mm.
An additional baton should be placed where the sheets overlap to prevent the wind from spreading between the sheets.
If the felt is not properly fixed, the wind will focus on the weak parts that cause more problems.
All Ridge and hip tiles need to be mechanically fixed in areas prone to strong winds.
These tiles should not be fixed by relying solely on roof mortar.
Once the combination between the tile and the mortar is broken, the tile is loose.
They should be fixed with nails, clips or wires.
The places most easily lifted by the wind are Eaves, verges, and ridges.
In these respects, it is prudent to take additional precautions in regards to tile fixing.
All the tiles around the nails and clips.
Taking a little more time during the installation phase will ensure that the roof tiles remain safe in bad weather.
Additional costs are offset by maintenance and savings in mentality.
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