First off, we don't recommend that you walk on your concrete tile roof, if you can avoid it. Sure, concrete tiles are strong. But they're not really made to be walked on. Every time you walk on the tiles, you put stress on them that can crack them or loosen them.
Any tiles that break subsequent to curing are due to mishandling, improper installation, misuse, improper foot traffic or severe impact or force. Severe impacts or forces, such as a tree branch or a heavy tool dropped onto a roof, can crack or break roof tiles.
If concrete roof tiles are laid properly on a slope surface, they will not leak or absorb water. This is even true of properly installed porous roofing material such as clay roofing tiles, as long as water does not pool on the roof and they aren't damaged in some way, then they will not leak.
Longest lasting roofing material
The NAHB (National Association of Home Builders) rates slate as by far the longest lasting roofing material, with a life expectancy of 150+ years, followed closely by clay and concrete at roughly 100 years.When to replace a concrete tile roof
The cost saving made on concrete tiles is reflected by their much shorter service life than clay roof tiles. Whilst still being in good condition after 50 years is not uncommon, concrete roof tiles in serviceable condition after 60 years to 70 years are a rarity.Slates should be scored using a scribing tool and snapped over a straight edge. Slates can be cut using a normal handsaw/hacksaw with teeth of 3mm - 3.5mm pitch, preferably wide set. Saws should always be used to start off when cutting acute angles. Marley Eternit slates may be cut with a reciprocating saw.
Slate tends to be more expensive than tiles. It is also double lapped to perform a watertight layer, which adds to the cost of installation. However, it's long-lasting properties usually mean that after the initial cost, you will have very few expenses on your roof for many years to come.
Double Roman Style Roof Tiles
Double Roman roof tiles are the preferred choice of tile for UK properties rather than the single form, with concrete typically used in favour of clay. The distinctive flat design with a small roll can still be found in clay thanks to the Sandtoft making the clay Double Roman.Fiber cement is a durable material made from sand, cellulose fibers, and cement, which is where manufacturers reinforce cement with fiber such as cardboard and similar items. This type of roofing material's inventor got the first patent in 1901.
Slate roof tiles are made of metamorphic rocks which are derived from sedimentary rock of volcanic ash and clay.
The church owners considered replacing them with various types of shingles, but decided to use simulated-slate roof tiles made by InSpire Roofing Products of Wixom, MI. These composite tiles are compression molded from a mixture of limestone and resins.
Natural Slate: Sourced and taken from natural environments to produce a stunning finish. Fibre Cement Slate: Made primarily from cement and other elements and is a versatile, cost-effective option. Man-made Slate: which is largely made up of reconstituted slate and is a cheaper alternative to the natural version.
For common straight cuts it is easiest to use an asphalt shingle cutter. Mount the cutter on the roof and set the guide to the desired depth. Next, press the synthetic slate tile firmly against the guide to ensure the cut is perfectly straight. Finally, lower the cutting arm to shear the tile in two.
Installed, synthetic slate costs about $900-1,100 per square. By comparison, total installation cost for a real slate roof starts at $1,650, and can go as high as $3,000 per square.
Mitring roofing sheets involves the cutting of opposite corners of roof sheets to prevent four overlaps of roof sheet occurring. To do this, use a hand or power saw to cut a clean and straight line. Each sheet should have two mitres, apart from roof sheets on the perimeter of the roof.
Slate and tile roofs require different size battens. The use of slate as a roof covering will always be installed double lap. Concrete slates require 38x25mm batten for 450mm joist spans and 50x25mm batten for 600mm joist spans.
The nails should provide a minimum of 40mm penetration into the rafter, so a nail length of 65mm is generally recommended. Start at the lower edge of the roof, nailing the batten into place at the centre of the rafter. Joints should be directly over rafters, with the batten square cut, tightly butted and skewed nails.
Batten and Holing Gauges for Natural Slate
It also allows you to determine the holing gauge (distance from hole to tail of slate) and the number of linear metres of batten per m2 of roof. Batten gauge = (length of slate-headlap)/2. Holing gauge = batten gauge + headlap + 10mm.Here are some guidelines to bear in mind: Battens should be fixed to rafters set at centres not more than 600mm apart. They should span at least three rafters and be at least 1.2m long. No more than one in four battens should be joined over one truss for gauges over 200mm.
Batten and Holing Gauges for Natural Slate
It also allows you to determine the holing gauge (distance from hole to tail of slate) and the number of linear metres of batten per m2 of roof. The batten gauge can also be calculated using the formula. Batten gauge = (length of slate-headlap)/2.When the head of a slate is overlapped by the slate two courses above it, that's called headlap — that's the critical overlap on a slate roof (Figure 2). Headlap is what keeps the water from penetrating through the roof. Headlap is what renders the roof water-tight. If there is no headlap, the roof will leak.
Not only does slate make a beautiful looking roof but the material itself is durable enough that it can be made into many aesthetically pleasing shapes. Slate roofs are fire resistant. Unlike many roofing materials, slate tiles are completely fireproof. Slate roofs can withstand high winds, heavy snow, and rain.
Welsh slate is considered by many as the best natural slate in the world. Welsh slate is available in either heather (purple) or blue-grey. Penrhyn slate has a beautiful soft blue/purple appearance and can be expected to last more than 100 years.
The
price will include scaffolding, materials, and labour. Renovate the
roof on a two story semi-detached house using
slate.
How Much Does a Roof Replacement Cost in the UK?
| Roofing Job | Typical Prices |
|---|
| The replacement of approximately six ridge tiles . | £140 – £255 |
| All the prices here only include materials and labor; VAT is not included. | |
It is expensive to install compared to other roofs. The square footage of a house is usually equivalent to the roof's square footage. So one hard or soft slate for each square foot of your house times $1,500 will be total cost of a new slate roof. Asphalt shingles have a total cost around $200 per square.
Natural Spanish slates
| Slates (3,547 slates @ £1.27 each) | £4,504.69 |
|---|
| – Labour (12 days) | £3,024.00 |
| Breathable membrane (5 rolls) | £324.60 |
| Batten (@ 31p per metre) | £263.93 |
| – Labour to underfelt and batten | £1,389.60 |
The amount of slates you need per square metre (m2) depends on which slate size you're using. For example, if you're using a 20×10 slate (500mmx250mm), you will require 21 slate per m2. A 24×12 slate (600mmx300mm) demands only 13 slate per m2.
Slate tends to be more expensive than tiles. It is also double lapped to perform a watertight layer, which adds to the cost of installation. However, it's long-lasting properties usually mean that after the initial cost, you will have very few expenses on your roof for many years to come.
How many roof slates per M2? The amount of slates you need per square metre (m2) depends on which slate size you're using. For example, if you're using a 20×10 slate (500mmx250mm), you will require 21 slate per m2. A 24×12 slate (600mmx300mm) demands only 13 slate per m2.
Nonetheless, the average flagstone prices are as follows: The minimum cost of flagstone is $2 per square foot (or $150 per ton) The maximum cost of flagstone is $5 per square foot (or $900 per ton) One ton of flagstone covers between 100sf and 300sf, depending on the thickness.
