Structural waterproofing

Structural Waterproofing

Our Structural Waterproofing Service delivers advanced solutions—such as high-grade tanking membranes, injection systems, and sealants—to fortify foundations and below-ground structures against water ingress.

Request a survey

Structural waterproofing is the general term for waterproofing any structure. However, we use it when referring to structures such as service tunnels, lift pits, podium decks, or concrete balconies (usually for commercial clients). If you are specifically looking at waterproofing an existing or new-build basement, look at our Basement waterproofing page.

RTC have extensive experience in the treatment of concrete and masonry structures against both water ingress and to create water retaining structures, such as swimming pools and storage tanks. Sometimes, waterproofing is combined with corrosion protection of steel reinforcement. More information on this type of application can be found on our concrete repairs page.

We have access to a vast range of specialist waterproofing and repair products from some of the worlds leading manufacturers such as Vandex and Koster and have received product specific training in the UK and Switzerland.

Below is an example of an interesting project. A large 5m x 6m x 5m deep concrete ‘bunker’ was built into the hillside which needed specialist multi-layer waterproofing (and a green roof for camouflage). It was home to a rather large generator which powered the under-drive heating!

Brook Farm Side
Structural waterproofing
Brook Farm Front
Brook Farm Front 2
Brook Farm Front

As with all types of specialist waterproofing, correct diagnosis of the problem and designing the right specification for treatment are essential for an effective solution. Both partners are qualified Structural Waterproofing Surveyors (CSSW), and we have experience of a wide range of unique and sometimes challenging projects.

Previous clients have ranged from Muller Wiseman Dairies, where we treated a 2 million litre effluent treatment tank to a new ‘state of the art’ RSPCA animal centre, where we ensured the new canine wash facilities kept the water in, whilst man’s best friend was treated to a good scrub.

It is usually preferable to discuss waterproofing before a structure is constructed. So, if you are planning a project, we would be happy to advise on waterproofing considerations as part of the overall design. 

Waterproofing types

It might be important for you to learn about the different types of waterproofing services available and how they could potentially protect your property from water ingress and damage. 

Type A: barrier protection

A barrier to water ingress is applied to the internal or external surface of the structure e.g. slurry.

Type B: structurally integral protections

The structure is formed as a watertight construction and requires no additional protection. Usually to the relevant British Standard and of reinforced concrete structure. BS 8007, BS 8110 and BSEN 1992 Eurocode 3.

Type C: drained protection

As waterproofing system designers, Type C is usually the preferred method for refurbishments and part of a combined system for a new build property in need of waterproofing. Type C systems can be installed in any weather and groundwater ingress conditions. Other benefits include the ability to service and maintain the system.

The 3 parts that form a ‘Type C’ drained protection:

Cavity drainage membrane

A crucial part of the waterproofing process is the selection of the correct cavity drain membranes. Cavity drain membrane provides an alternative way of waterproofing walls to the traditional cementitious tanking systems.

Perimeter drainage channel

This drainage system is engineered specifically to solve basement water problems effectively without the worry of clogging from soils under the floor. It has large holes in the back to accept water and a flange with special segments.

Sumps & pumps

The sump & pump system is the heart of a Type C waterproofing system. Water enters the sump via the drainage channel before being pumped away to a convenient drainage point.

Structural Waterproofing

For any queries on structural waterproofing solutions, or to book a survey, please contact us.

Our staff will work closely with you from survey stage, right through to the successful completion of the contract.


Get in touch

For any queries, or to book a survey, please get in touch.

Our staff will work closely with you from survey stage, right through to the successful completion of the contract.

Call me back

Would you like a call back from one of our friendly team about anything? Fill out the form below and we'll get back to you ASAP.

4.9/5 Rating from 230 Reviews

Why Choose RTC?

1

Experienced & Reliable

Hundreds of properties attended every year

2

Established 35 Years

We have been in business since 1990

3

Skilled Experts

Expert Technicians and Surveyors

4

Long Term Guarantees

Our damp proofing is guaranteed to last

What our valued customers say...

Verified
High-Standard Finish That Went Above & Beyond

Fantastic job done, really appreciate the work done. They did more than I expected at a really high standard. Nothing negative I could possibly say so I would recommend to anyone requiring their services. Good job RTC!

Verified
Respectful Service & Impeccable Protection

I dont write reviews unless there necessary and these guys are, Dale fron RTC was absolutely brilliant very respectful in our home and with our furniture ensuring things were covered up the best he could amazing company.

Verified
Transparent Pricing & Top-Notch Workmanship

From initial contact with the office, to the visit from the surveyor, the surveyors report which was very thorough as he actually went under the floors, the price for the work and the quality of the job itself was excellent. The surveyor Sam did an excellent job as was the repairs done by Dan and Karl. After the work was completed, I was contacted by the office to check that I was satisfied with work and the quality of the job, which I was. Professional all the way through with good customer service, made to feel I was important to their business. It’s an old adage but big enough to cope and small enough to care fits the bill. Would use again and would have no reservation about recommending them.

Verified
Dillon’s Expertise Shines: Reliable, Neat, On-Time

The 2 men that turned up were very polite and the main man Dillon was good at his job got straight on with doing his work everything went as planned and when he had finished was left clean and tidy carpet replaced with new carpet grippers really happy with the work done

Verified
Knowledgeable Pros Who Tidy Up After Themselves

From beginning to end the work was undertaken in a proffesional and efficient manner by skillful and knowledgable people. The workmen arrived when stated and left each day having tidied up and cleaned whereever possible.were. I have no hesitation in recommending RTC.

Verified
Clear Communication & Impeccable Cleanup

From start to finish the company were very professional. Everything was explained to us. Despite the work being very messy, everything was cleaned up at the end of each day. The two lads who completed the work, Wes and George, were hard working, polite and answered my many questions without any problem. The work was done to a very high standard, and it exceeded my expectations. I would highly recommend RTC, I would not hesitate to use them again.

Verified
Damp Proofing Done Right—Clean, Quick & Reliable

Had RTC in to do damp proof work in dining room and hall way turned up on time everyday kept my property as clean as they could even thought this is a messy job before leaving everyday they made sure all work areas we’re hovered and swept the staff I had at my property were really nice friendly hard working lads they answered all my questions if I ever need them in the future they will be getting a call and can I finish by giving Jack a shout as he was with us though out the works and he is a credit to RTC

Verified
Outstanding Service by Sam, Stacey, Hayleigh & Mat

I had this company recommended to me and i am so glad they did everyone that ive dealt with from survey sam the girls in the office stacey and hayleigh to the workmen mat and the rest of workforce they did a great job and would use them again reliable tidy really pleased. Thanks again

Verified
Protected Home, Perfect Finish—Excellent Result

Originally recommended by my surveyor after discovering damp in 5 rooms. All the RTC staff were friendly and did a great job in minimising the dust and mess with protected sheeting and flooring throughout the house. The final result is excellent and a big call out to Steve for helping with moving a very heavy radiator and giving me tips on cauking. Highly recommend if you want a fairly priced job by hghly skilled employees and not subcontractors.

Verified
Condensation Cleared in Days with PIV System

I recently had a Positive Input Ventilation System fitted in my loft and was very happy with the results. Within just a couple of days the problem with condensation was clearing. Lawrence who fitted the system did a great job and was very clean and tidy also the ladies in the admin department were very pleasant and helpful.

Verified
Professional from Damp Report to Final Plaster

Delighted with the service. RTC installed a damp proof course and replastering at my house. The damp survey was professional, detailed and very clear on the work to be done with good accompanying explanations of the issues. The office is easy to contact, answering all my calls and returning them promptly if the person I needed to speak to wasn’t immediately available. The technicians who performed the work were professional and worked fast and hard. They explained clearly all the steps and left the house clean every day. I am really please with the final finish and overall result. They were not the cheapest quote or survey I had, but at all steps were the most professional. Highly recommended.

Verified
Respectful Team Treated Our Home Like Their Own

From initial contact, surveyor visit and 3 days on site undertaking the work we found RTC to be very professional in all aspects. The lads who undertook the work communicated well throughout the job and more importantly treated the property with respect, as if it was their own home. Would recommend RTC without hesitation or reservation.