Wet Room Installation in Kilburn NW6

Why Kilburn Properties Choose Us

Victorian terraces, up-and-coming area with lower entry prices. Strong community, diverse neighbourhood. Our team works exclusively in NW London, bringing detailed knowledge of Brent planning requirements and the specific challenges of Victorian terraces & conversions stock.

Planning Authority

Brent LBC

Average Property Value

£700,000

Conservation Area

No

Typical Project Cost

£12,000–£35,000

How a Wet Room Installation Works — Step by Step

1. 1

   Structural Assessment and Floor Loading Survey

   Victorian and Edwardian properties have timber joist floors that must be assessed for wet room suitability. We check the joist depth, span, and current condition — floors with inadequate joist depth must be upgraded before a wet room build-up can be applied. We also confirm drainage fall and the feasibility of connecting to existing soil or waste pipes.

2. 2

   Drainage Design and Position

   The linear drain position is the critical design decision — it defines the floor fall, tiling pattern, and the structural cut required through the floor. We design the drainage route to the existing soil stack, confirming the available head between the proposed drain position and the stack connection to achieve the required minimum 25mm/m fall.

3. 3

   Floor Joist Preparation or Upgrade

   Where existing joists are adequate, they are sistered with additional timbers to provide a rigid substrate. Where the joist depth is insufficient, new deeper joists are installed alongside the existing ones. A rigid cement particle board substrate is fixed across the joists to provide a stable, non-deflecting base for the tanking system.

4. 4

   Tanking and Waterproofing Application

   A continuous tanking membrane system complying with BS EN 14891 is applied to the floor and all walls within the wet area. Corners and junctions receive reinforcing tape. The tanking is applied in two coats with a minimum total thickness of 0.5mm. No tile, fitting, or penetration is made through the tanking before it is fully cured.

5. 5

   Linear Drain and Floor Former Installation

   The linear drain housing is set into the floor build-up at the design level. A purpose-made shower former or a sand-cement screed bed is laid to the correct fall (typically 1.5–2% towards the drain). The screed is allowed to cure fully before tiling begins.

6. 6

   Tiling and Grouting

   Floor tiles are laid to the fall using a flexible adhesive compatible with the tanking system. Wall tiles are fixed using flexible adhesive with movement joints at internal corners and every 3m of uninterrupted surface. All grout is a stain-resistant flexible epoxy or polymer-modified grout. The linear drain grating is the last item fitted.

7. 7

   Plumbing, Electrics, and Fitting Installation

   Thermostatic shower valve, fixed head, and hand shower are installed and tested. Underfloor heating cables (where specified) are laid and connected. All electrical installations in Zones 0–3 comply with Part P and BS 7671. NICEIC Part P certification is issued for all electrical works. A final waterproofing test is performed before handover.

Wet Room Installation in Kilburn — Planning and Local Considerations

Kilburn's Victorian terrace stock has timber joist floors requiring the standard assessment and potential upgrade before wet room installation. The LPA (Camden or Brent) determines which building control authority applies — both require Part P notification. The rental market in Kilburn drives demand for practical, durable wet room installations. Mid-range specification — quality linear drains, large-format porcelain tiles, and thermostatic showers — is appropriate and appealing for NW6 lettings.

Frequently Asked Questions