CR0 · A23 / A232 · 0 mi from Croydon
Level Your Floor Before New Flooring — Croydon Central (CR0)
Almost every problem with a new floor traces back to the subfloor. In Croydon Central we spend more time on preparation than on the finish flooring itself — because a wood floor over a 6mm hollow is a wood floor that will squeak, cup and eventually fail. Getting the base flat, dry and secure is 70% of the job.
From £420 · Level survey £180 (refunded against booked work). Latex from £14/m², ply overlay from £22/m².
Typical turnaround: 1–3 days including cure time; larger areas 3–5 days.
Our repair process in Croydon Central
Step 1
Level survey
Straight-edge and laser survey across the whole area. We map high and low points, moisture-test the sub-deck, and give you a written spec of what needs doing.
Step 2
Fix loose or damaged sub-deck
Re-screw perimeter, replace damaged boards, packer under joists where levelling is required. Structural first, cosmetic second.
Step 3
Apply DPM if needed
For concrete without a moisture barrier we apply a two-coat epoxy DPM (Bona R540 + R580) or a bituminous membrane, depending on moisture readings.
Step 4
Latex self-levelling compound
Feather in dips with fibre-reinforced latex compound; pour a proper self-levelling layer where the deviation is large. Cures in 24 hours to a flooring-ready surface.
Step 5
Ply overlay where needed
For older sub-decks or where levelling depth would be excessive, we overlay with 5.5mm ply screwed at 150mm centres — the flooring industry standard for a stable base.
What you're seeing in Croydon Central
Common signs we diagnose in CR0 subfloor levelling calls:
- Visible dips or humps in the current floor's surface
- Skirting boards gapping at the top or bottom in specific rooms
- Existing floor lifting at joints or edges
- Springy sections when walked on
- Hollow-sounding spots when you tap the floor
What's actually happening
The likely root causes in Croydon Central's apartment homes and along A23 / A232:
- 1
Concrete without DPM allowing moisture upward through the floor
- 2
Original screed poured out of tolerance and never levelled
- 3
Cut floorboards notched for services (heating pipes, cabling)
- 4
Settlement in older {stock} homes causing local dips
- 5
Chipboard sub-deck screws working loose over 20+ years
Why Croydon Central clients pick us
- We follow BS 5325 and BS 8203 for subfloor preparation — the standards flooring warranties require
- We prep for our own installs and for other flooring contractors — same standard both ways
- We follow BS 5325 and BS 8203 for subfloor preparation — the standards flooring warranties require
- We prep for our own installs and for other flooring contractors — same standard both ways
Materials & method
Exactly what we use on Croydon Central subfloor levelling jobs — no vague "trade-quality" waffle.
- Ardex A45 or Mapei Ultraplan latex self-levelling compound
- Bona R540 mist primer + R580 moisture barrier — for concrete DPM
- 5.5mm structural plywood BB grade — for sub-deck overlay
- Timbre Turbo-Drive 4x40 screws for perimeter and grid re-fixing
Timeline: 1–3 days including cure time; larger areas 3–5 days. · Price: from £420 · Level survey £180 (refunded against booked work). Latex from £14/m², ply overlay from £22/m².
Subfloor Levelling in Croydon Central — common questions
- Can you level over a chipboard sub-deck?
- Yes — but we usually re-screw the deck first (perimeter and joist centres), and if it's badly out of level we overlay with ply. Feathering latex directly onto chipboard rarely holds long-term.
- Do you cover Croydon Central for subfloor levelling?
- Yes — Croydon Central (CR0) is on our regular Croydon route. We do subfloor prep for our own flooring installs and also for other flooring contractors in the area.
- How much does subfloor levelling cost in Croydon Central?
- Latex self-levelling is typically £14–£22/m² depending on depth. Ply overlay is £22–£30/m². For a typical open-plan CR0 kitchen-diner, £600–£1,600.
- What about underfloor heating — does that change the prep?
- Yes — wet-lay UFH screed needs full commissioning cycle (typically 21 days) before we'll lay flooring. Electric mat UFH usually goes over a latex layer we install first. Different approach for each system.
- What if my floor has moisture from below (concrete without DPM)?
- Then we apply a DPM before anything else — usually a two-coat epoxy. That's non-negotiable — wood or LVT over a wet slab fails, always. It's £6–£10/m² added and it's essential.
- Do I really need subfloor levelling in Croydon Central, or can I skip it?
- You can skip it — and you'll pay for it in year 3 with lifted joints or cupped edges. In Croydon Central we consider levelling mandatory for engineered wood over 3mm/2m deviation, and for LVT over 1mm/2m. The tolerance is real, not marketing.
The straight answer for Croydon Central
Every flooring problem we're called back to in CR0 traces to the same source: inadequate prep. Wrong moisture level, uneven base, no DPM. The flooring wasn't the problem — the preparation was. In Croydon Central we do the prep as if the finish depended on it, because it does.
Level before you lay in Croydon Central
Latex, ply, DPM — the right prep for your specific base.
Nearby CR areas we cover
Not all combinations are live yet — where a nearby link 404s, the same team still covers that area.