The material that
survives the flood.

Sealwise WCB is waterproof sheet material that machines like MDF but absorbs zero water. We supply kitchen manufacturers and fabricators who build flood resilient kitchens. Build Back Better eligible — covered by participating insurers.

0%
Water Absorption
Lifetime
Waterproof Guarantee
Up to £10k
Build Back Better (via insurer)
0
Warranty Claims Since 2009
The Problem

MDF absorbs water.
That's why kitchens fail.

When flood water enters a home, standard MDF kitchen carcasses absorb it like a sponge. The board swells, cracks, and disintegrates — destroying doors, drawers, electrics, and everything inside. The entire kitchen goes in a skip.

This happens every time it floods. For families in flood-prone areas, it's not a question of if, but when. Kitchen companies are increasingly asked for flood resilient alternatives — and that's where WCB comes in.

Flooded MDF kitchen / water damage photography
The Difference

Standard materials vs. Sealwise WCB

Same kitchen design. Same fabrication process. Completely different outcome when water rises.

Standard MDF

Absorbs water. Fails every time.

  • Carcasses swell and warp within hours of water contact
  • Board disintegrates — structural failure inevitable
  • Doors, drawers, hinges, and fixings all need replacing
  • Electrics often destroyed by water ingress
  • Full kitchen replacement: £8,000–£25,000+
  • Weeks of disruption while customers wait for rebuild
  • Same thing happens at the next flood
Sealwise WCB

Zero absorption. Clean and carry on.

  • Closed-cell structure — physically cannot absorb water
  • Board remains dimensionally stable at any depth
  • Doors and hardware stay attached, functional
  • Wipe clean once water recedes — no strip-out required
  • Replacement cost: £0 (carcasses survive)
  • Customers back in their kitchen days faster
  • Ready for the next flood. And the one after that.
Who We Work With

We supply the material. You build the kitchen.

Sealwise is a sheet material manufacturer, not a kitchen company. We supply WCB to professionals who fabricate and install flood resilient kitchens.

Kitchen Manufacturers

Offer your customers a flood resilient option. WCB machines exactly like MDF — same tools, same processes, same edge details. No new equipment or training required.

Fabricators & Fitters

We supply WCB sheet material or cut-to-size components to your specifications. You fabricate and install as normal. Your customer gets a kitchen that survives flooding.

Homeowners & Insurers

Looking for a flood resilient kitchen? We can connect you with kitchen companies who use WCB, or supply material to your chosen manufacturer. Build Back Better (via your insurer) or government PFR grants may cover the upgrade.

Build Back Better

Your insurer can cover the upgrade.
Homeowners pay nothing extra.

Build Back Better is an insurance industry scheme run through Flood Re. Participating insurers (including Aviva, AXA, NFU Mutual, Ageas, and others) offer up to £10,000 for property flood resilience measures when repairing after a flood — on top of the standard claim. This can cover the full cost difference between standard MDF and Sealwise WCB.

Up to £10,000
From participating insurers for flood resilience measures
Nothing extra to pay for waterproof materials
1
Check your insurer participates in Build Back Better (ask your broker or insurer directly)
2
Kitchen company specifies WCB — we supply the sheet material
3
Your insurer covers the material upgrade as part of your flood claim

Note: Government PFR grants (up to £5,000) may also be available through your local authority after specific flood events. Check with your council for eligibility.

Build Back Better scheme / insurance process illustration
Real Proof

From flooded out to flood ready.

The MDF core of the panels had soaked up the dirty flood water and cracked, wrecking all carcasses, doors, electrical and contents. The whole kitchen needed to be stripped out and thrown in a skip. We were determined never to experience that again.

Sealwise customer
Scotland. Flooded October 2023. Kitchen installed 2024.

“The cabinets are surprisingly affordable, with our kitchen coming within our expected budget even with all the waterproofing changes. They were actually comparable with pre-built cabinet costs from most kitchen suppliers - so well worth it for the waterproof capabilities we could not find elsewhere.”

Before: flooded kitchen with damaged MDF units
After: new Sealwise WCB kitchen installed

Customer home, Scotland. Flooded October 2023.

How It Works

From specification to installation

We supply the WCB sheet material. Your team fabricates and installs as normal.

1

Kitchen company designs as normal

Work with your customer to design their kitchen. Choose doors, worktops, handles, appliances. The design doesn't change — only the carcass material.

2

We supply WCB sheet material

We provide WCB sheets or cut-to-size panels to your specifications. Standard thicknesses, standard sheet sizes. Delivered to your workshop.

3

You fabricate and install

WCB machines with standard woodworking tools. Cut it, drill it, rout it, screw it — exactly like MDF. No special training, no new equipment, no change to your process.

Why Sealwise WCB

Engineered for exactly this situation

0%

Truly Waterproof Throughout

WCB is a closed-cell polymer board. There are no internal pathways for water to enter — not through the face, not through cut edges, not through fixings. It physically cannot absorb water at any depth or duration.

0% absorption · tested to BS EN 317

Dimensionally Stable

When MDF gets wet, it swells and warps. WCB doesn't. Doors stay aligned. Drawers still open. Hinges remain attached. After a flood, the kitchen still works — it just needs cleaning.

no swelling · no warping · no rot

Machines Like MDF

WCB machines exactly like MDF. Same tools, same fixings, same techniques. Your workshop can process it without any specialist training or equipment. The fabrication process doesn't change.

cuts · drills · routs · screws
UK MADE

Recyclable & UK Made

WCB is 100% recyclable and manufactured in Somerset using recycled content. When it eventually reaches end of life (decades from now), it goes back into the manufacturing process — not landfill.

100% recyclable · UK manufactured
Learn More

WCB + W14: The complete waterproof system

WCB isn't just for flood resilience — it's the same closed-cell sheet material trusted in hospitals, veterinary facilities, dental surgeries, and cleanrooms across the UK. Paired with our W14 chemical welding system, it creates permanently sealed joints that are impossible to penetrate. Same material, same lifetime guarantee.

Get Started

Build kitchens that
survive flooding.

We'll send WCB samples with full technical data — dispatched within 24 hours. Test it in your workshop. See how it machines. Then offer your customers something MDF can't do.