Porous Lead Roof

However over time damage can occur.

Porous lead roof.

Porous roof tiles are weaker. As the porosity of your tiles increase it means more and more little holes will fill the entirety of your tiles. Due to its durability and strength lead is a popular material for roof and chimney flashings. As the lead heats up during the summer it expands quite considerably and the silicone is not strong enough to resist this movement and will break hardly an effective lead flashing sealant.

Traditionally 30 felt was used at eaves as insurance against this problem. Acrylic sealants have similar disadvantages where butyl rubber sealants have the opposite effect that over a period of time become hard and brittle but. If there are porous slates or openings above the tears in the felt water may leak through. Understandably when you re dealing with a concrete roof this is a big concern because they are so exposed to the elements the last thing you want to happen is to have your concrete tiles fall off your roof.

Even if the cracks or holes may be very small they could still affect the quality of the tile and make it less durable during storms or strong winds. More about lead as a building material. Weather deterioration loose fixings and movement can result in roof leaks. Whether you re renovating a house or just performing an exterior health check ignoring a poorly maintained roof can be disastrous.

Porous tiles lead to leaks. Ice dams at roof eaves can be a serious leak source on slate as most other roof systems. The more holes there are the more water can start to absorb and leak through your tiles with less difficulty. In roof tiling and slating the author rejects this cautious approach.

For those who don t know porous in this case means the concrete roof tiles will let water through. Compare them here. Correctly laid lead roof greyfriars roofing note the height of steps between bays the rolled joints and adequate overlaps problems. Http www fixmyroof co uk flat roof repair need a new flat roof.

A porous tile on itself cannot be as strong as a tile in a good and solid condition. Where such a problem is left unattended it will ultimately lead to widespread rot and decay. Belzona liquid roof coatings are ideal for sealing the cut edges to prevent corrosion. Investigative work carried out on warm roofs covered in lead has shown that in rare instances moisture can also be introduced by the development of sub atmospheric pressure in the roof space.

Porous roof tiles can break more easily. This is something that may be expected. Just a couple of damaged or missing tiles or slates will quickly allow water to penetrate a building s fabric resulting in damage to the timbers and ceilings below.