Waterproofing Frequently Asked Questions

Basement and Structural Waterproofing Frequently Asked Questions

We have gathered together a list of the most frequently asked questions that we get relating to structural waterproofing – if you have a question that isn’t answered here please feel free to “Ask our Expert” and we will be more than happy to help you.

How much will it cost to waterproof my basement?

More often than not this is the first question asked by people! Due to the many different factors associated with waterproofing, and the many different types of property in which it is undertaken this is a difficult question to answer. Idealy we would arrange a survey of the basement by one of our qualified waterproofing professionals as there are so many different variables. If you are interested in arranging a survey call 0800 288 8660 or complete the online waterproofing survey request form.

 What is BS8102?

 British Standard 8102:2009 is the ‘Code of practice for protection of below ground structures against water from the ground’. It is the primary design guide for structural waterproofing design in the UK and was revised towards the end of 2009. Anybody producing a waterproofing design should take account of the considerations contained within this document. To learn more about BS8102 and how it effects waterproofing design have a read through our BS8102 article. 

What is ‘Tanking’?

Tanking, otherwise known as ‘Type A barrier protection’ is a type of waterproofing. Tanking litterally means blocking water out of a structure by employing a barrier product (Either intrnally or externally). Tanking is still widely used in new construction but there are important considerations that need to be taken into account when considering using this system.

What is waterproof concrete?

Defined as ‘Type B structural integral protection’ within BS8102, this form of waterproofing  comprises of a structure that is considered to be integrally waterproof in its own right. This would usually mean a good grade concrete structure built to BS8110 or BS8007 which will also include a waterproofing additive. In most cases concrete structures built in accordance with these codes of practise should be waterproof as concrete is 2.2 times denser than water. There is though an Achilles heel in the form of the construction joints which can fail and allow water to penetrate. The only guarantee-able remedial waterproofing solution to solve the issue of failed Type B waterproofing  is a cavity drain membrane system (Type C Waterproofing) retrospectively fitted to the inside of the structure.

 What is ‘Drained Protection’?

Type C Waterproofing  is a waterproofing system manages the water by using an internal drainage management system which typically comprises of the following: Cavity drain membrane, perimeter drainage channel and a sump pump systems. Drained protection offers a low risk solution and predictable results. 

How do I know that Timberwise are waterproofing experts?

Timberwise have been caring for property for over 40 years. We recieve many testimonials from happy clients that we are delighted to show people. If you have any questions please feel free to contact us.

How can I protect myself against a contractor carrying out the work, issuing guarantees and then vanishing?

We would suggest that you do your homework as best you can when choosing a contractor. Firstly check out the finances of the company you are looking at also check to see that they have professional indemnity and product liability insurance as this is another safeguard. If a business suffers a large claim and they aren’t protected with insurance, they could be forced out of business, whichwould then affect every single client holding a guarantee provided by that business!  If  they are protected by appropriate insurances they should remain in business and be able to uphold the guarantees. Another way by which you can protect yourself, is by checking that the business you are looking at using offers GPI (Guarantee Protection Insurance), which protects you in the event of the contractor ceasing to trade.

If I employ Timberwise, how do I know that they are reputable and that they are covered should something go wrong?

Timberwise would not have been operating in this specialist market for so long and with so much success if they weren’t good. We wont leave you in the lurch, and to ensure this, we are covered by the following:

Employers Liability insurance – protects employees whilst at work and on site
Level of cover: Yes – unlimited

Product Liability insurance – protects the client if the products fail for whatever reason
Level of cover: Yes – £10,000,000

Public Liability insurance – protects clients and other third parties
Level of cover: Yes – £10,000,000

Product guarantee insurance – backs the company 10 year guarantee on workmanship
Level of cover: Yes – £500,000

Professional Indemnity – insures the advice/specification given to you. This is the most expensive insurance and as such not many contractors take it out (They say they can’t afford it). But it is most important to the client because it protects you! The chances are that a contractor without insurance will walk away if problems occur in the future. And then what do you do?
Level of cover: Yes – £500,000

 When do I recieve my Timberwise Guarantee?

Guarantees are supplied when work is paid for in full.