Ply overlay subfloors across SE9
Old floorboards in a 1930s bay-fronted semis with a scattering of post-war infill 1930s bay-fronted semis in New Eltham are the wrong base for LVT — every dip and gap telegraphs through. 6mm ply overlay, ring-shank nailed on a 150mm grid, gives you a mirror-flat base that doesn't squeak.
What plywood overlay subfloor prep in New Eltham actually involves
Old floorboards in a 1930s bay-fronted semis with a scattering of post-war infill 1930s bay-fronted semis in New Eltham are the wrong base for LVT — every dip and gap telegraphs through. 6mm ply overlay, ring-shank nailed on a 150mm grid, gives you a mirror-flat base that doesn't squeak.
Original pine boards over joists — same story as neighbouring Sidcup, so ply overlay before LVT is the norm.
Three things that decide a subfloor prep fit in New Eltham
- Stair nosings
Older New Eltham stairs often have shallow treads — we re-cut grippers rather than force a standard kit.
- Doorway transitions
Most 1930s bay-fronted semis doorways here need a bevelled bar rather than a Z-bar to clear the carpet next door.
- Underlay choice
8mm crumb is the usual call for New Eltham bedrooms; 10mm PU on stairs to stop bounce.
- 6mm or 12mm ply overlay for old floorboard subfloors
- Ring-shank nailed on 150mm grid — no squeaks
- Perfect base for LVT, laminate, vinyl and wood
- Alternative to full screed on suspended floors
Bottom line: LVT over old floorboards is a mistake. Ply overlay first, LVT second.
“Jordan was so helpful and fit in to our dates. Even though we didn't know what they would be. Nothing was too much trouble. Will definitely recommend to anyone. Thank you.” — Georgina Bozza, verified Google review
Postcodes: SE9 · Routes: the A20 · Common build: 1930s bay-fronted semis.
Covering Avery Hill, Southwood, Green Lane.
Relevant finishes for plywood overlay subfloor prep
Plywood Overlay Subfloor Prep in New Eltham — common questions
Yes — ply overlay is fit-ready the same day. No moisture cure required (unlike latex screed).
6–12mm plus underlay for the new decorative floor — usually 10–20mm total. Doors may need trimming, we factor that in on the New Eltham visit.
Yes — ring-shank nails on 150mm grid pin the ply and the boards below to the joists. Standard on every SE9 overlay job.
6mm for most residential rooms; 12mm where joists are wide or boards are particularly uneven. Standard 6mm on Victorian bedroom fits in Avery Hill.