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Williams & Co Paint Contractors

Waterproofing systems compared, Durbanville, the Northern Suburbs and greater Cape Town

Every contractor recommends the system they happen to own.

The torch-on installer recommends torch-on. The coating guy recommends coating. We only apply liquid rubber, so read this knowing exactly what our bias is, and read the part where we tell you when torch-on is the better answer.

  • Based in Durbanville, working Durbanville, Aurora, Vierlanden, Eversdal, Welgemoed, Bellville, Brackenfell, Kraaifontein, Kuils River, Plattekloof, Sonstraal Heights, Panorama, Kenridge, Fisantekraal and surrounds
  • WhatsApp us and we reply during office hours.
  • Written scope, one fixed price for the job

Problem & approach

Where these projects go wrong, and how we handle them.

The usual problem

You have a leak and three quotes that recommend three different systems at three different prices, and no way to judge between them. Worse, each quote is written in a way that makes comparison impossible: one prices per square metre, one prices the job, one lists a product name and nothing else. Nobody explains that the systems fail in completely different ways, on completely different timescales, and that the cheapest quote is often the one that has quietly left out the preparation that decides whether any of it lasts. So the decision gets made on price, which is the one variable that tells you the least.

Our approach

Here is the honest version. Torch-on is a bitumen sheet melted down with a flame. Done properly on a big flat concrete roof it is a solid, proven system, and the seams are its weakness: every lap is a join, joins age, and in ten years the leak is nearly always at a lap or an upstand. It needs a flame on site, which rules it out on some buildings, and it cannot be recoated, only overlaid or stripped. Acrylic roof coatings are paints with flex. Cheap, easy, fine for refreshing a sound roof, not a membrane. Liquid rubber goes on wet in three coats and cures to roughly 3mm of seamless rubber with no joins at all, seals around every bolt and pipe as one piece, needs no flame, and can be washed and recoated years later without stripping anything. Its weakness is honest too: it lives or dies on preparation and on getting all three coats, and it is not a structural repair. That is the whole comparison. We apply liquid rubber only, and if your roof is a large flat concrete slab where torch-on is genuinely the better economic answer, we will say that rather than take the job.

What may be included

Scope you can actually read.

The exact line items on your quote depend on the site inspection. This is the shape of what a typical project of this type includes.

  • Diagnosis first: where the water actually enters, before any system is discussed
  • A written recommendation that names the system and says why
  • Cost per square metre for the option we recommend, and honest comment on the alternatives
  • Preparation spelled out in writing, because that is where quotes hide the difference
  • Detail scope: bolts, laps, upstands, flashings, penetrations, drainage
  • Three-coat Rubber Sealant® build where liquid rubber is the right answer
  • A straight no, with a reason, where it is not

Products we work with

The Systems Behind the Work.

  • Rubber Sealant® logo

    Approved applicator and authorised reseller of Rubber Sealant® Liquid Rubber.

  • Plascon logo

    Our preferred paint on most projects.

We are not a Plascon approved applicator. Plascon is simply the paint we choose to specify for its quality and track record, and we will recommend a different system where a project calls for it.

Our process

7 steps from enquiry to handover.

  1. 1

    Enquiry and phone assessment

  2. 2

    Site inspection and leak diagnosis

  3. 3

    Written recommendation with the system named and justified

  4. 4

    One fixed price for the whole job

  5. 5

    Preparation, repair and priming

  6. 6

    Three-coat liquid rubber application

  7. 7

    Drainage check, handover and guarantee documentation

Honest limits

What we will tell you up front.

A proper contractor should be honest about what a service can and cannot do. These are the things we will always flag.

  • We do not install torch-on membranes, and we do not install injection damp courses. Liquid rubber is the only waterproofing system we apply.
  • On large flat concrete roofs with good access and good falls, torch-on can be the better economic answer. We will tell you when it is and refer you on.
  • Neither system fixes structure, falls or drainage. Those come first, whichever route you take.
  • Comparative lifespans depend entirely on preparation and application. A badly applied premium system loses to a well applied cheap one every time.
  • Guarantee terms depend on manufacturer inspection, correct specification, certified thickness and maintenance.

Not sure what your liquid rubber vs torch-on needs? Send us a photo.

Take one photo on your phone, send it on WhatsApp, and we will tell you what we are looking at. We are in Durbanville most weeks, so a site visit is easy to arrange.

WhatsApp a photo

FAQ

Liquid Rubber vs Torch-On: questions we hear

Budgeting

Want the numbers before you phone anyone?

We publish real Cape Town rates, including our own, and explain exactly what a cheaper quote leaves out.

Related work

Recent projects like yours.

A few real Williams & Co jobs. More in the projects gallery.

Double-storey home | full exterior repaint

Exterior Painting

Double-storey home | full exterior repaint

A weather-worn double-storey exterior stripped back, prepared and repainted in a clean two-tone scheme.

Single-storey home | exterior and trim

Exterior Painting

Single-storey home | exterior and trim

Walls, fascias and trim brought back to a crisp finish, with cracks treated before any coating went on.

Tiled roof | cleaned and coated

Roof Painting

Tiled roof | cleaned and coated

Tiles cleaned down, ridges checked and re-bedded where needed, then coated with a specified roof system.

Keep reading

The pages our Durbanville clients read before they phone us.

Start here

Durbanville, service by service

Where we work

Complexes, commercial & managed buildings

Business parks & work at height

Specialist systems

Durbanville and surrounds

Get a fixed price for your liquid rubber vs torch-on.

Three ways to start, all of them quick. Send a WhatsApp, tap to call, or leave your details and we come back with a written scope and one fixed price for the whole job.

WhatsApp Leroy now Call 079 435 6308

Monday–Friday 08:00–17:00

What happens after you send it

We reply, ask the few questions that matter, then book a proper look at the property. You get a written scope, one fixed price for the whole job, and a straight answer on what we will not do.

One-year workmanship guarantee on qualifying Williams & Co work.

Takes about 20 seconds

Send your details instead

No call centre. Your details come straight to Leroy.