Professional General Contractors in Marlow

Pitch fiber pipe replacement... Do you have drainage that needs replacing, repairing or installing etc. These pipes could be clay, plastic, asbestos and more. There is alot of pitch fiber pipes still in use that are fine but most are now needing to be replaced. What is Pitch fibre???? Pitch fibre was developed in the 1940’s when materials were in short supply and was made from wood cellulose impregnated with coal tar with asbestos added to strengthen the material. Due to it being cheaper and a more lightweight alternative to the traditional vitrified clay drainage it was used in much of the post war building until the 1970’s when plastic drainage took over. Pitch fibre collapses when exposed to external pressure and delaminates internally producing blisters when hot water and fat, oil and grease are regularly poured down the drain. Equally prolonged contact with water can cause the drain to blister and deform.