What Is the AKW Tuff Form Wet Floor Former?
If you're specifying or installing wet rooms on a regular basis, the AKW Tuff Form wet floor former is likely already on your radar. With over half a million installations across the UK, it's become one of the most trusted names in level-access wet room construction — and for good reason. In this guide, we cover everything a trade professional needs to know: sizes, floor types, waste options, finishing choices, and how to get the best results on site.
The AKW Tuff Form is a level-access wet room floor former manufactured from compressed SMC-GRP (Sheet Moulding Compound — Glass Reinforced Plastic). At just 22mm thick, it's specifically engineered to sit flush with standard UK timber floor boards (18mm board + 4mm plywood), meaning no awkward sub-floor adjustments are needed in most timber floor installations.
Despite its low profile, the Tuff Form is exceptionally strong — with a load capacity of up to 381kg (60 stone) on joists, and unlimited load capacity when installed on concrete. That makes it suitable for wheelchair users, bariatric applications, care homes, and multi-occupancy settings.
Available Sizes
The AKW Tuff Form is available in a wide range of sizes to suit virtually any wet room layout. Current sizes include:
- 900 x 900mm (Code 21000)
- 1000 x 1000mm (Code 21008)
- 1135 x 770mm (Code 21012)
- 1200 x 900mm (Code 21015)
- 1200 x 1200mm (Code 21018)
- 1300 x 820mm (Code 21027)
- 1400 x 900mm (Code 21028)
- 1500 x 820mm (Code 21036)
- 1500 x 1200mm (Code 21045)
- 1800 x 820mm (Code 21050)
One of the Tuff Form's key practical advantages is that it can be trimmed on site to within 150mm of the waste hole without any loss of structural integrity — giving installers flexibility when dealing with awkward room dimensions.
Timber vs Concrete Floor Installation
Timber Floors
The Tuff Form is designed to work seamlessly with standard UK timber floor construction. Its 22mm depth matches the combined thickness of an 18mm chipboard or floorboard plus 4mm plywood overlay — meaning the finished floor level sits flush with the surrounding floor without the need for additional packers or build-up boards. The ribbed underside prevents movement or float during installation, and the pre-drilled fixing holes make securing the former straightforward.
Concrete Floors
On concrete substrates, the Tuff Form can be bedded directly into a sand and cement screed or flexible tile adhesive. On concrete, the load capacity is unlimited, making it the go-to choice for heavier-duty or institutional environments. Ensure the former is fully supported across its full surface area to prevent any flex.
Waste Options Explained
Choosing the right waste is just as important as choosing the right former. The Tuff Form features an offset waste hole position — which can be rotated during installation to avoid floor joists — and is compatible with a range of gravity and pumped waste systems:
- Gravity wastes — the most common choice for installations where the fall allows direct drainage. Available in 19mm and 50mm outlet sizes.
- Pumped wastes — ideal when there's no fall available, or when installing below the drainage level. The Silentflow PGTF 22mm pumped waste is a popular choice for these situations.
- Low-depth wastes — for installations where floor depth is at a premium. The DW90 range offers reduced trap depth without compromising drainage performance.
All waste options are available to order alongside the former, so you can specify the full installation package in one go.
Vinyl vs Tiled Finish — Which Should You Specify?
Vinyl Safety Flooring
For care settings, social housing adaptations, and accessible bathrooms, non-slip vinyl sheet flooring is often the preferred finish. It's quicker to install, provides excellent slip resistance, and is easier to clean — important considerations in high-use environments. AKW's clamp kit is used to create a watertight seal around the drain, ensuring a fully waterproof installation.
Tiled Finish
For domestic installations where aesthetics are a priority, the Tuff Form accepts a fully tiled finish when used in conjunction with a suitable wet room tanking kit. A waterproof tanking membrane must be applied over the former and up the walls before tiling — products like the Mapei wet room tanking kit are designed specifically for this application and are available alongside the former.
Why Trade Professionals Choose the AKW Tuff Form
Beyond its technical specifications, the Tuff Form has earned its place as the installer's wet room former of choice for several practical reasons:
- Fast installation: Pre-formed gradient planes mean no screeding to create falls — the drainage slope is built in.
- On-site flexibility: Trim to size, rotate the waste position to avoid joists, and adapt to the room rather than the other way around.
- Proven track record: Over 500,000 installations across domestic, care, and healthcare settings.
- Compliance ready: Meets accessibility requirements for level-access showering, suitable for OT-specified adaptations.
- Full product ecosystem: Compatible with AKW's complete range of wet room accessories, wastes, and care products.
Order the AKW Tuff Form from Key West Bathrooms
At Key West Bathrooms, we stock the full range of AKW Tuff Form wet floor formers across all sizes, with optional waste kits available to bundle with your order. We offer trade accounts, competitive pricing, and next working day delivery on most items when ordered before 2pm.
Browse our full range of AKW Tuff Form wet floor formers or call us on 0333 772 4162 to discuss your requirements with our team.