This building was observed in new york city and based on its age we suspect that the material shown is asbestos cement corrugated siding not a newer fiber cement product.
Corrugated asbestos cement roofing.
Eaves and gutters are covered with pre prepared strips of roofing steel.
Due to its fantastic thermal qualities and being extremely fire retardant it is not surprising that asbestos was extensively used in roofing and insulation in the 20 th century.
You might have noticed that corrugated asbestos sheets have been used mostly in the roofing of all sorts of construction particularly in factories and farmhouses.
Corrugated asbestos sheets were used in the roofing and siding of all types of buildings especially in factories and farms.
The fibre cement film is transferred on to the felt and the excess water in the film is dehydrated by vacuum system.
Our photograph at left illustrates that corrugated asbestos cement or on newer buildings corrugated fiber cement panels are also used as siding not just as a roofing product.
Cement sheets are one of the most commonly used roofing products that the mineral is found in and there are still a large number of buildings around the uk that have an asbestos cement sheet roof.
Adding asbestos to the cement made the corrugated roofing sheets more heat resistant weatherproof and durable.
J hooks are used to fix angle iron purlins l hooks are used for fixing to rs joists timber or precast concrete purlins.
Asbestos cement sheets are laid diagonally with an overlap from bottom to top in rows from left to right or from right to left.
Asbestos cement in roofing.
Other replacements for asbestos cement roofing use both different fibers and a different aggregate perlite to replace the asbestos.
Following process parameters always remember while production of asbestos corrugated cement sheet.
Corrugated roofing sheets made of asbestos is common in uk homes constructed prior to 2000.
Since the cement sheets were fireproof manufacturers initially considered them safer as compared to wood.
In the first row of the eaves edge sheets are laid and fastened with two nails 2 5 35 mm.
Fibrous cement created an easy and affordable alternative to corrugated metal panels which offer little insulation and inevitably rust over time.
Installation of asbestos cement roofing.
The process water taken out at different stages of manufacture is pumped back to recuperate tanks for reuse.
Fixing of corrugated asbestos cement roofing sheets.