Causes. The causative organisms behind STDs include: 1  Viruses such as HIV virus, hepatitis B, herpes complex and human papilloma virus (HPV). 2  Bacteria such as gonorrhea, Chlamydia and syphilis.
Replacing a typical thatch roof costs on average Â£10 per square foot or about Â£100 per square metre. Mr New said: Check the roof every two or three years. The life of a thatched roof ranges from 25 years to 70 years; this varies depending on where the house is situated and on what kind of material the roof is made of.
The average cost to clean a roof is $408, though you might pay anywhere between $294 and $564 for the project. Cleaning Methods by Roof Type. Roofs are available in various types of materials; thus, the cleaning solutions used on them differ according to the type of roof you have and the kind of issues you need to address.