Dr. Fixit
Dr. Fixit Fastflex
Flexible cementitious coating
Bathroom
Wet areas
Water tanks
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Dr. Fixit Fastflex Plus
Flexible waterproof membrane
Dr. Fixit Fastflex Plus is the higher-performance grade of the Fastflex system, specified for wet areas and water-retaining structures where greater flexibility or a more demanding exposure justifies the step up.
Flexible
Crack bridging
Indoor
Outdoor
| Brand | Dr. Fixit |
|---|---|
| Product type | Flexible waterproof membrane |
| Chemistry | Two-component polymer-modified cementitious |
| Supplied as | Powder plus liquid, site mixed |
| Substrates | RCC, Screed, Plaster |
| Applications | Wet areas, Bathroom, Water tanks, Swimming pools |
| Pack size & coverage | Per the manufacturer’s current data sheet — ask us for the TDS |
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Product description
Leakproofs by Betterwork specifies and applies Dr. Fixit Fastflex Plus as part of a complete waterproofing system. A material on its own does not stop a leak — what stops it is the right material chosen for the right defect, on a surface that has been properly prepared. That is why we deep-scan before we specify.
Where Dr. Fixit Fastflex Plus is used
This product is specified for wet areas, bathroom, water tanks, swimming pools.
- Water tanks, sumps and swimming pool tanks
- Bathroom sunk slabs on buildings with structural movement
- Wet areas over substrates with active fine cracking
- Podium and terrace areas that will be tiled or screeded over
- Structures subject to continuous water contact
Suitable substrates: RCC, Screed, Plaster.
How it is applied
Mixed to the specified ratio and brush applied in successive coats at right angles, with reinforcing tape at all corners, junctions and penetrations. On water-retaining structures the system is cured and then flood-tested before the structure is put into service.
Preparation is the part that decides whether the system lasts. Loose material and failed old coatings are removed, cracks are cut and filled, and the surface is cleaned and brought to the moisture condition the product requires before anything is applied. Skipping that stage is the single most common reason waterproofing fails in its first season, whichever brand is on the tin.
Key properties
- Higher flexibility than the standard grade
- Suited to permanent water contact
- Bridges fine substrate cracking
- Tileable and screedable
- Applied to both positive and, in some cases, negative faces
Technical data
Pack sizes, coverage, cure times, colours and current pricing for Dr. Fixit Fastflex Plus are taken from the manufacturer’s current technical data sheet.
Formulations, pack sizes and regional availability change, so we quote against the data sheet in force on the day rather than a figure copied from a website. Ask us for the current TDS and SDS for this product and we will send them with your estimate.
Related waterproofing services
We apply Dr. Fixit Fastflex Plus as part of the following services:
Free inspection & written estimate
Get Dr. Fixit Fastflex Plus specified for your building
Book a free deep-scan inspection. We identify what is actually causing the leak, then recommend the material system that fits — with a fixed written estimate before any work begins.
Dr. Fixit and its product names are trademarks of their respective owner. Leakproofs by Betterwork is an authorized Dr. Fixit applicator. Product information on this page is provided to help you choose a system; always refer to the manufacturer’s current technical data sheet before use.
You may also need
Alternatives to Dr. Fixit Fastflex Plus, and the products most often specified alongside it on the same job.
Explore related services and areas
Our services
- Terrace Waterproofing
- Roof Waterproofing
- Bathroom Waterproofing
- Wall Waterproofing
- Basement Waterproofing
- Water Tank Waterproofing
- Balcony Waterproofing
- Swimming Pool Waterproofing
Specialist treatments
- Terrace Waterproofing
- Bathroom & Toilet Waterproofing
- Basement & Underground Tank Waterproofing
- External & Internal Wall Leakage Treatment
- PU & Epoxy Coating Waterproofing
- Injection Grouting (Pressure / Chemical)
- Dampness & Seepage Treatment
- Monsoon Pre-Inspection & Leakage Detection