07956 994429 020 8244 0912 INFO@DHPLUMBING.CO.UK GAS SAFE REGISTERED#180521 AboutServices Service Areas Our WorkReviewsContact 07956 994429020 8244 0912 Request EstimateQuote - Home - Services - Bathroom Installation Gas Safe #1805214.9★ · 159 Google reviews30+ years local # Bathroom Installation inWoolwich & Greenwich Designed With You, Installed by One Team A new bathroom without the six-trades chaos. Danny sits with you, sketches the layout, sources fittings, then plumbs, tiles and finishes with a small trusted team, clean site, agreed timeline, one point of accountability from first sketch to final silicone bead. Request a free estimate Call 07956 994429 Call 020 8244 0912 Free in-home design consultation · Written fixed price 30+ yrs Local experience 180521 Gas Safe registered 4.9★ 159 Google reviews £5m Public liability insured 9–9 Office, 7 days a week Overview ## One team, one contract, one bathroom done properly Most bathroom horror stories aren't about the plumbing, they're about coordination. Six subcontractors, no site manager, and a two-week job becomes six. What it isA full bathroom installation covering design, sourcing (or supply-only if you prefer), full strip-out, first-fix plumbing and electrics, tiling, fitting of sanitaryware, and final second-fix and finishing. Delivered by one small trusted team led by Danny. Who it's forHomeowners in SE London renovating an existing bathroom or ensuite, converting a downstairs WC, or fitting a family bathroom into an extension. We work equally well on £6k budgets and £25k specifications, the process is the same, the fittings differ. When you need itWhen your current bathroom is dated, leaking, unsafe (electric shower failures, poor drainage), or you're planning an extension. Also common: an ensuite being added to a master bedroom to add value pre-sale. Why a professional mattersBathroom installation crosses plumbing, hot water design, electrics (Part P), waterproofing (BS 8000-11), ventilation (Part F) and building regulations. Getting one of those wrong lands you with tanking failure, insurance claims from downstairs neighbours, or a bathroom that fails a homebuyer's survey. What’s at stake ## How a bathroom install goes wrong when nobody's in charge A bathroom leak isn't a bathroom problem, it's a kitchen ceiling problem downstairs, and a very expensive one. ### Waterproofing skipped under tiles Tile adhesive isn't waterproof. Without proper tanking behind the shower, water tracks into the substrate and rots the joists. £8,000 to strip and redo two years in. ### Wrong falls to the drain A wet-room floor without a correct fall pools water at the low point and rots the tray edge. We laser-level every wet floor. ### Undersized soil connection Cutting into a soil stack without the right saddle and vent creates back-siphonage and drain smells. Common in flats. ### Poor extractor spec Under-specced or wrongly-vented extractors leave humidity in the room, blooming mould behind tiles and inside the ceiling void within a season. Common mistakes we fix - Buying sanitaryware before the layout is confirmed - Trusting a general builder to do the plumbing and 'finish it up' - Skipping tanking to save £250 and losing £8,000 - Choosing a low-pressure shower for a mains-fed combi (or vice versa) - Not budgeting for the joist strengthening that a stone bath needs Our process ## From your first call to the completion certificate. - 1 ### Design consultation Danny visits, measures, discusses use, budget and style, sketches layout options with you at the kitchen table. - 2 ### Fixed quote & timeline Detailed quote covering strip-out, plumbing, electrics, tiling, sanitaryware, waste routing and second-fix. Timeline agreed in writing. - 3 ### Sourcing or supply-only We can source everything with trade pricing, or fit your own supplied sanitaryware, whichever works for your budget. - 4 ### Installation Full strip-out, first-fix, tanking, tiling, sanitaryware, electrics with Part P certification, extractor, silicone, cleaned every evening. - 5 ### Handover Full walk-round with you, snag list closed, aftercare on grout and silicone advice. Benefits ## What you actually get for the money. ### One point of accountability Danny holds the job start to finish, no subcontractor blame-shifting. ### Timeline you can plan around Realistic dates agreed upfront and kept to. Most family bathrooms complete in 8–12 working days. ### Clean site every evening We sheet floors, dust-screen doors and vacuum out before we leave each day. ### Warrantied plumbing All plumbing to WRAS standard and warrantied 12 months on top of manufacturer terms. ### Waterproofed properly Full tanking behind wet zones, no shortcuts, no ceiling problems downstairs. ### Adds real value A professional bathroom installation is one of the highest-ROI improvements for SE London terraces and flats. Technical detail ## What actually goes into a bathroom done properly The finish is what you see. The value is in what you don't. ### Design and layout We look at the door swing, the natural light, the wet zones and the plumbing feasibility together. Small SE London bathrooms often work better with a walk-in shower than a bath; large ones sometimes benefit from a stud wall to hide cistern and pipework. ### First-fix plumbing 22mm hot and cold to the manifold, 15mm services to each fitting, isolators on every outlet, air admittance valves where required, correct falls on all waste runs. Pressure tested before it disappears into the wall. ### Waterproofing (tanking) Full tanking system (typically Mapei Mapegum or BAL WP1) behind and under all wet zones. Corner and floor tapes bedded and rolled. Given 24 hours to cure before tiling begins. ### Tiling Substrate levelled and primed. Large-format porcelain up to 1200x600 comfortably. Mitred external corners where the spec calls for it. Grouted with a colour chosen to work with the room, not the tile alone. ### Electrics and ventilation Part P notifiable work certified through our registered electrician. Shaver sockets, IP-rated downlights, mirror lighting, extractor sized to the room volume with humidistat where appropriate, vented to outside, never into a loft. ### Fittings and second-fix Sanitaryware installed with correct isolators and service loops so future maintenance is quick. Silicone applied last, in one continuous unbroken bead, a small detail that separates a good bathroom from a professional one. Recent work ## Photos from real jobs, not stock imagery. See the full gallery → Frequently asked ## Questions we hear every week. How much does a new bathroom cost in SE London?+A mid-spec family bathroom typically lands £8,500–£13,500 fully installed. A high-end master with premium tile and brassware runs £16,000–£25,000. We quote fixed in writing after the design consultation. How long does a bathroom installation take?+8–12 working days for a straightforward strip-and-replace. 15–20 days for a full re-layout or ensuite conversion. You'll have a written schedule before we start. Do you supply the sanitaryware or should I?+Either, we can source everything with trade pricing (often at or below retail) or install your own supplied fittings. Just tell us upfront so we can spec correctly. Can you fit a wet room?+Yes, full wet rooms with tanked floor, correct falls, linear or point drain, and a walk-in glass panel. Suits ensuites and single-user bathrooms best. Will you handle the electrics?+Yes, through our regularly-used registered electrician. Part P certified and building-control notified where required. Do I need to move out during the installation?+Not if it's your only bathroom, we work around you and try to reinstate a working toilet by end of each day. In practice most single-bathroom clients arrange a few nights elsewhere during first-fix and tiling. What warranty do I get?+Manufacturer warranties on all fittings, registered in your name before we leave site. Do you tile or subcontract it?+We tile in-house, Danny's team has been doing it for decades. Tiling is where most bathrooms are made or lost. Book bathrooms ## Ready to get bathrooms sorted properly? Speak to Danny directly. Free quote in writing, honest advice, and a fair fixed price. No sales pressure, we’ve been at this for over 30 years for a reason. Call 07956 994429 Call 020 8244 0912Request estimate - Gas Safe registered #180521 - 4.9★ from 159 Google reviews - Office 8am–9pm, 7 days a week - Based in Greenwich · covers all SE London Related services ## Often booked together. See all services → Service ### Electric Showers Learn more Service ### Unvented Cylinders (G3) Learn more Service ### Plumbing Learn more Service ### Central Heating Installation Learn more Gas Safe registered plumbing, gas & heating engineers with 40 years of local experience across South East London. Gas Safe #180521 Company No. 06064438 Services - Boiler Installation - Boiler Repairs - Power Flushing - Gas Safety Engineer - Landlord Gas Safety (CP12) - Gas Fires & Cookers - Heating Engineer - Central Heating Installation Service Areas - Greenwich · Woolwich - Blackheath · Eltham - Thamesmead · Plumstead - Abbey Wood · Erith - Dartford · Bexley · Sidcup Contact - 07956 99442924/7 Emergency - 020 8244 0912Office landline - info@dhplumbing.co.uk - London - Office: 8am – 9pm, 7 days a week © 2026 DHP London Ltd. All rights reserved. AboutOur WorkReviewsContactPrivacyTerms Call nowGet a quote